Post by Admin on May 6, 2014 9:51:29 GMT -5
1. You are shopping for a hard disk drive for a personal computer (PC) that you are building.
For which reason would you purchase a disk drive that uses the SATA 3.0 (SATA V2) standard instead of the original SATA standard?
Answer: B
You would purchase a disk drive that uses the SATA V2 standard instead of the original SATA standard when you need to optimize performance for audio and video application. Although both versions can support Native Command Queuing (NCQ), SATA V2 includes a new NCQ command that makes data transfers for applications that use a lot of bandwidth more efficient than data transfers performed by disk drives based on the original SATA standard.
To support an external disk drive, you should purchase an external SATA (eSATA) adapter and disk drive that uses either SATA v2 or the original SATA standard. An eSATA adapter is a bracket that attached to the back panel of the computer that connects ports for eSATA drives to the SATA ports on the motherboard. eSATA drives operate at the same throughput as internal SATA drives, which offers a faster alternative to external Universal Serial Bus (USB) drives.
Unlike older Parallel ATA (PATA) drives (also know as EIDE drives), neither SATA drives nor SATA V2 drives use jumpers
2. When performing an installation on a coworker's computer, you discover some adult-related photos that the user has forwarded to other employees at the company. You work at a new start-up company and know that no employee handbook currently exists.
What two steps should you take? (Choose 2)
For which reason would you purchase a disk drive that uses the SATA 3.0 (SATA V2) standard instead of the original SATA standard?
- You plan to install an external disk drive.
- You need to optimize performance for the audio and video applications.
- You need to support hot swapping of the disk drive.
- You want a drive that does not use jumpers
Answer: B
You would purchase a disk drive that uses the SATA V2 standard instead of the original SATA standard when you need to optimize performance for audio and video application. Although both versions can support Native Command Queuing (NCQ), SATA V2 includes a new NCQ command that makes data transfers for applications that use a lot of bandwidth more efficient than data transfers performed by disk drives based on the original SATA standard.
To support an external disk drive, you should purchase an external SATA (eSATA) adapter and disk drive that uses either SATA v2 or the original SATA standard. An eSATA adapter is a bracket that attached to the back panel of the computer that connects ports for eSATA drives to the SATA ports on the motherboard. eSATA drives operate at the same throughput as internal SATA drives, which offers a faster alternative to external Universal Serial Bus (USB) drives.
Unlike older Parallel ATA (PATA) drives (also know as EIDE drives), neither SATA drives nor SATA V2 drives use jumpers
2. When performing an installation on a coworker's computer, you discover some adult-related photos that the user has forwarded to other employees at the company. You work at a new start-up company and know that no employee handbook currently exists.
What two steps should you take? (Choose 2)
- Save the files and report the information to the coworker's supervisor.
- Tell your coworker to delete the files and to never browse for or save adult-related files again
- Tell your coworker to email the files to his or her personal smartphone and delete the email message when the smart phone download is complete.
- Tell your coworker heh or she can only save the files to his or her own flash drive.
- Help human resources develop a handbook that tells people what content is appropriate and what actions will be taken if prohibited material is found.
Answers: A,E
You should help human resources develop a handbook that tells people what content is inappropriate and what actions will be taken if prohibited material is found. Setting up clear expectations benefits employees and employers.
You should also save the files and report the information to the coworker's supervisor. Finding inappropriate files should be documented, the files should be archived, and the issue escalated to management.
You should not delete the files and associated emails and tell the employee to never browse for or save adult-related files again. The employee could easily disregard your advice if no employee policy exists and continue downloading and forwarding prohibited content.
You should not tell your coworker he or she can only save the files to his or her own flash drive. Your coworker should not download, save, or share adult-themed files on any work computer. Even though your coworker did not save the files on his or her work computer, the prohibited content still entered through the company network and such images could be cached on the hard drive.
You should not tell your coworker to email the files to his or her personal smartphone and delete the email for adult-themes files. Prohibited content should never come through the company network or his email system.
3. You need to compare DDR2-667 with DDR-1600.
Which statement is correct?
Answer: B
DDR3-1600 has a higher peak transfer rate than DDR2-667. The peak transfer rate for DDR3-1600 is 12,800 Mbps; whereas the peak transfer rate for DDR2-667 is 5,333 1/2 Mbps.
DDR3-1600 chips cannot be installed in a DDR2 slot. The notch is in a different position.
DDR2-667 chips cannot be installed in a DDR3 slot. The notch is in a different position.
DDR2-667 does not have a higher data rate than DDR3-1600. The data rate for DDR2-667 is 666 2/3 Mbps; whereas the data rate for DDR3-1600 is 1600 Mbps.
4. You are setting up a home office and need broadband Internet access. You need to keep the costs and additional equipment required to a minimum.
What WAN technology should you use?
Answer: A
You should use a cable modem. Most cable TV operators provide high-bandwidth Internet access. A standard cable TV coaxial cable is used as the signal carrier, and the only additional customer equipment is a cable modem. Data rates vary by provider and service contract and range from 1 megabits per second (Mbps) to 10 Mbps.
One drawback is that cable modem access is available only in areas with cable TV service. Other SOHO options include satellite and digital subscriber line (DSL).
Satellite requires a small satellite dish and receiver similar to satellite TV. Subscribers can lose Internet access during inclement weather. The upload speed is usually significantly slower than the download speed. Some satellite systems also require a dedicated computer to control access from the customer end.
DSL is provided by the local telephone provider through analog telephone lines. Asymmetric DSL (ADSL), the most common implementation, requires a modem at the customer location and typically does not require any other special equipment. Data rates are typically lower than the cable modem, as low as 256 kilobits per second (Kbps), depending on the service type and the distance from the telephone company office equipment. As with satellite
service, upload is slower than download. 2 other DSL options, symmetric DSL (SDSL) and very high speed DSL (VDSL) are typically not available for home use. There are no generally accepted standards for SDSL, and service varies depending on the equipment that is used, but it is typically the same as ADSL except that the same bandwidth is provided for both upload and download. VDSL is available in very limited geographic areas and generally considered prohibitively expensive for SOHO use. Bandwidth can be as high as 50Mbps, with 20 Mbps being typical.
You should not use a T1 or T3 line in this situation. The cost would be prohibitive for SOHO implementations, and specialize equipment is required to connect to the circuit. Also, the service is not available in all areas. Bandwidth for T1 in the US is 1.536 Mbps for concurrent upload and download. T3 bandwidth in the US is up to 44.736 Mbps.
You should not use ISDN. Home office ISDN is typically implemented as ISDN Basic Rate Interface (BRI). ISDN BRI supports a data transmission bandwidth of 128 Kbps. An ISDN BRI includes 2 B-channels (each supporting 64 Kbps) that can carry data, voice, and other services. The ISDN BRI also includes one 16 Kbps D-channel that carries control and signaling information. The bandwidth is less than cable modem, the cost is higher, and special equipment is required at the customer location.
5. When you are on a service call, when is it acceptable to use a customer's telephone?
Answer: A
You should use a customer's telephone only after asking and receiving the customer's permission. Even then, you should limit your calls to business-related calls.
You should not feel that you can never use a customer's telephone, or that you would be out of line to ask permission to use the customer's telephone. There can be situations when you need to use the customer's telephone while troubleshooting or correcting the problem.
It is incorrect to believe that you can use a customer's telephone anytime you want. This would be especially wrong if you are making personal calls or calls that are not related to the customer's problem. Always get the customer's permission first and limit your calls to necessary business-related calls.
Some guidelines for appropriate communication skills and professionalism are as follows:
* Use proper language and avoid jargon, acronyms, slang
* Maintain a positive attitude.
* Listen and do not interrupt a customer.
* Be culturally sensitive.
* Be on time and contact the customer if you are running late.
* Avoid distraction such as personal calls, interacting with co-workers, and personal interruptions.
* Avoid arguing with customers and/or being defensive
* Do not minimize customers' problems
* Avoid being judgmental.
* Clarify customer statements by asking open-ended questions to narrow the scope of the problem and restarting the issue or question to verify understanding.
* Offer different repair/replacement options if applicable.
* Provide proper documentation on the services provided.
* Follow up to verify satisfaction.
* Deal appropriately with confidential materials.
6. What must you do when delivering a CRT display to a recycler for reclamation?
Answer: B
You must be careful to prevent breaking the screen when delivering a CRT display for recycling. The CRT contains phosphorous that can be reclaimed by some recyclers, but most recyclers cannot reclaim the phosphorous or anything else if the CRT (the tube) is broken. Also, when a CRT breaks, it implodes violently. The resulting broken and flying glass can cause injury. Because CRT monitors can be quite heavy, you should also wear a back brace for protection against injury.
You should not cover the display case or cables before delivering the CRT display for recycling. There is no need to remove the case or cables, and removing the case makes it more likely that the CRT might get broken.
You should not cover the display and break the screen. This will prevent most recyclers from being able to recover anything from the display. Also, when a CRT breaks, it implodes violently. The resulting broken and flying glass can cause injury.
7. What steps should you taken to clean a thermal printer?
Arrange the entries in the list in the order in which you should perform them. Place the first step at the top of the list.
Answer:
To clean a thermal printer, use the following steps:
* Turn the printer off and access the thermal printer head door.
* Release the print head by pressing the lever.
* Access the print head by moving the thermal ribbon to the side.
* Dampen a lint-free rag with isopropyl alcohol.
* Wipe the dampened rag across the print head several times.
* Allow the print head to dry.
* Return the ribbon cable to its original position on the print head.
*Place the print head and lever back into their original positions.
* Close the thermal print head door and turn the printer on.
8. What is necessary when connecting a laser printer directly to a wired network?
Answer:
Answer: B
When connecting a printer directly to the network, you can configure the printer to enable users to access the printer without having to connect through another computer. When connecting to the network, you must be an appropriate network adapter. Some printers still require a network computer to act print server for the printer while others have the print server as an integrated feature of the printer.
You do not need a Bluetooth adapter to connect a printer to a network. Bluetooth is a radio frequency connection method for peripheral devices. A Bluetooth adapter is needed for the printer to communicate with a Bluetooth enabled computer. Once the printer is connected to the computer, you can then share the printer to the network through the computer.
You do not need a FireWire or USB port to connect a printer directly to the network. Both are wired peripheral connections to computers, not network connections. Once the pinter is connected to the computer, you can then share the printer to the network through the computer.
9. Which statement correctly describes the difference between a solid state hard drive and a magnetic hard drive?
Answer: D
A solid state hard drive is quieter than a magnetic drive. A magnetic drive has a spinning disk that makes noise when it is accessed. A solid state drive stores data on a microchip and does not include any moving parts. Therefore, it makes less noise than a magnetic drive.
A magnetic hard drive is more likely to be damaged if a running computer is dropped. If you drop computer when a magnetic drive is spinning, it can cause the heads that read the magnetic media to crash.
The average magnetic hard drive creates about three time the heat of a SSD.
A solid state drive provides faster access time than a magnetic drive because it does not rely on mechanical parts to store and access data.
10. How do you prevent ESD when removing and replacing electronic components?
Answer: B
You should wear a grounded anti-static strap when removing and replacing electronic components as a way of prevented electrostatic discharge (ESD). A grounded anti-static wrist strap helps to keep you, the computer, and the replacement components at the same ground level. ESD occurs when different ground levels come in contact with each other.
You should not leave computers plugged in to a grounded outlet when charging components. You should always turn off and unplug computers before removing and replacing components. Failure to do so can result in damage to the components and injury to the technician.
You should not leave components siting on a antistatic bag until needed. An antistatic bag is designed to route static to the surface of the bag to protect delicate components stored in the bag. Leaving a component siting on the outside of the bag is more likely to cause, rather than prevent, ESD.
You should not maintain low humidity in your work area. Lower humidity levels make ESD more likely to occur.
11. For which of the following should you implement QoS in a small office/home office (SOHO) environment?
Answer: B
Voice over Internet Protocol (VoIP) is a digital voice service that uses the Internet rather than the normal phone network. When you implement VoIP, you should also implement Quality of Service (QoS) to give packets carrying VoIP traffic priority over other packets. This reduce the delay of voice packets and provides the best voice service.
QoS is not necessary for the services like e-mails and instant messaging because they are not as dependent upon the speedy delivery of packets as VoIP.
QoS is not related to the service set identifier (SSID) of a wireless access point (AP). An AP uses SSID to announce itself to the network so that clients can discover available APs. Disabling SSID can help prevent some wireless threats, such as war driving, which is searching for unsecured AP as a access networks. However, this is only effective against the most casual attempts. Dedicated utilities are available that enable hackers to locate APs, even when they do not broadcast their SSID.
12. Which statement correctly describes real vs. actual processor speed?
Answer: A
Actual speed is affected by the amount of RAM. The actual speed of a processor is the speed at which it runs inside a specific system. It can be affected by the amount of RAM, the speed of the FSB, and other performance bottlenecks.
Real speed is not affected by the speed of the FSB. The FSB is the connection between the processor and RAM. It affects actual speed, but not real speed. Real speed (also know as rated speed) is the clock speed of the processor.
Actual speed cannot be measured without connecting the processor to a computer. Real speed can be measured without connecting the processor to a computer.
Real speed for a multi-core processor is not calculated by adding the actual speed of each core. Real speed for a multi-core processor is based on the real speed of each core.
13. You travel to locations beyond the suburbs of many cities in a small vehicle to research locations for future shopping centers. You often encounter inclement weather in the field. You need to select the appropriate Internet connection for uploading large photos and videos from the field in the shortest amount of time.
Which Internet connection type should you use?
Answer: B
You should use a cellular because you travel to many outdoor research using a small vehicle. A cellular Internet connection would allow you to be as mobile as possible and upload photos and videos from the field in a reasonable amount of time.
Because you travel to do outdoor research, you could not use satellite as your Internet connection. Satellites are beneficial for stationary remote usage. Satellite requires a small satellite dish and receiver similar to satellite TV, which prevents mobility. Subscribers can lose Internet access during inclement weather, which would be bad if you were trying to upload photos and videos in the field. The upload speed is usually significantly slower than the download speed. Some satellite systems also require a dedicated computer to control access from the customer end.
You cannot use a cable modem. Because you are mobile and need to upload data from the field, you would not have cable modem access. Most cable TV operators provide high-bandwidth Internet access. A standard cable TV coaxial cable is used as the signal carrier, and he only additional customer equipment is a cable modem. Data rates vary by provider and service contact and range from 1 megabit per second (Mbps) to 10 Mbps.
You would not use dial-up for your Internet connection. Dial-up uses a standard telephone connection, which is not available in the field. Dial-up would be too slow to upload photos and videos.
14. Which two are wireless data transferring technologies? ( Choose 2)
Answers: A,C
Bluetooth is a wireless communication protocol that allows for the transferring of data over secure wireless connection. This communication protocol is popular with portable devices such as laptops and cellular telephones.
Satellite connections are wireless connections that are established via stationary dished on earth and connect with geo-stationary satellites in our atmosphere.
Infrared and cellular are also wireless data transfer technologies. Infrared Data Association (IrDA) defines the physical specification for infrared data transfer. Infrared has been used for connections to printers and personal digital assistant (PDAs), but it is being replaced by other wireless technologies. Infrared data transfer is limited to distances of about 1 meter.
Cellular communication is also wireless. Laptops with wireless cellular modems can transfer data using the same technology that cell phones use to connect to the internet. Some cell phones can also act as wireless modems.
A Digital Subscriber Line (DSL) is a compression technique that is implemented over telephone lines. It is not wireless.
Voice over Internet Protocol (VoIP) is a telecommunication protocol that allows for voice data to be transferred over P networks. VoIP requires a hard-wired connection and is therefore, not an appropriate answer.
15. You are taking with a customer who is having problems prating from an application.
Which question, when asked courteously, would be best first step in gathering information from the customer about the problem?
Answer: D
The first step in the information gathering process is to establish when or under what circumstances the problem first occurred. In this case, if the printer works with all other applications, the problems probably software-related. Avoid technical explanations unless the customer asks for them.
It may be necessary to ask the customer to check the cabling, but first find out when the problem occurred and eliminate user error and software-related problems.
Some basic principles of troubleshooting include the following:
* Performing backups before making changes.
* Assessing a problem systematically and dividing large problems into smaller components to be analyzed individually.
* Verifying the obvious to determine whether the problem is something simple.
* Researching ideas and establishing priorities.
* Documenting findings, actions and outcomes.
Some basic diagnostic procedures and troubleshooting techniques include the following:
* Identifying the problem by questioning the user and identifying user changes to the computer
* Analyzing the problem and its causes and make an initial determination of the problem.
* Establishing a theory of probable cause.
* Testing the theory.
* Testing related components including inspection, connections, and hardware and software configurations.
* Consulting vendor documentation.
* Evaluating results and taking addition steps if needed, such as consultation and the use of alternate resources such as manuals.
* Verifying full system functionality.
* Documenting activities and outcomes.
You should help human resources develop a handbook that tells people what content is inappropriate and what actions will be taken if prohibited material is found. Setting up clear expectations benefits employees and employers.
You should also save the files and report the information to the coworker's supervisor. Finding inappropriate files should be documented, the files should be archived, and the issue escalated to management.
You should not delete the files and associated emails and tell the employee to never browse for or save adult-related files again. The employee could easily disregard your advice if no employee policy exists and continue downloading and forwarding prohibited content.
You should not tell your coworker he or she can only save the files to his or her own flash drive. Your coworker should not download, save, or share adult-themed files on any work computer. Even though your coworker did not save the files on his or her work computer, the prohibited content still entered through the company network and such images could be cached on the hard drive.
You should not tell your coworker to email the files to his or her personal smartphone and delete the email for adult-themes files. Prohibited content should never come through the company network or his email system.
3. You need to compare DDR2-667 with DDR-1600.
Which statement is correct?
- DDR2-667 chips can be installed in a DDR3 slot.
- DDR3-1600 has a higher peak transfer rate than DDR2-667.
- DDR3-1600 chips can be installed in a DDR2 slot.
- DDR2-667 has a higher data rate than DDR3-1600.
Answer: B
DDR3-1600 has a higher peak transfer rate than DDR2-667. The peak transfer rate for DDR3-1600 is 12,800 Mbps; whereas the peak transfer rate for DDR2-667 is 5,333 1/2 Mbps.
DDR3-1600 chips cannot be installed in a DDR2 slot. The notch is in a different position.
DDR2-667 chips cannot be installed in a DDR3 slot. The notch is in a different position.
DDR2-667 does not have a higher data rate than DDR3-1600. The data rate for DDR2-667 is 666 2/3 Mbps; whereas the data rate for DDR3-1600 is 1600 Mbps.
4. You are setting up a home office and need broadband Internet access. You need to keep the costs and additional equipment required to a minimum.
What WAN technology should you use?
- Cable modem
- T3 line
- T1 line
- ISDN
Answer: A
You should use a cable modem. Most cable TV operators provide high-bandwidth Internet access. A standard cable TV coaxial cable is used as the signal carrier, and the only additional customer equipment is a cable modem. Data rates vary by provider and service contract and range from 1 megabits per second (Mbps) to 10 Mbps.
One drawback is that cable modem access is available only in areas with cable TV service. Other SOHO options include satellite and digital subscriber line (DSL).
Satellite requires a small satellite dish and receiver similar to satellite TV. Subscribers can lose Internet access during inclement weather. The upload speed is usually significantly slower than the download speed. Some satellite systems also require a dedicated computer to control access from the customer end.
DSL is provided by the local telephone provider through analog telephone lines. Asymmetric DSL (ADSL), the most common implementation, requires a modem at the customer location and typically does not require any other special equipment. Data rates are typically lower than the cable modem, as low as 256 kilobits per second (Kbps), depending on the service type and the distance from the telephone company office equipment. As with satellite
service, upload is slower than download. 2 other DSL options, symmetric DSL (SDSL) and very high speed DSL (VDSL) are typically not available for home use. There are no generally accepted standards for SDSL, and service varies depending on the equipment that is used, but it is typically the same as ADSL except that the same bandwidth is provided for both upload and download. VDSL is available in very limited geographic areas and generally considered prohibitively expensive for SOHO use. Bandwidth can be as high as 50Mbps, with 20 Mbps being typical.
You should not use a T1 or T3 line in this situation. The cost would be prohibitive for SOHO implementations, and specialize equipment is required to connect to the circuit. Also, the service is not available in all areas. Bandwidth for T1 in the US is 1.536 Mbps for concurrent upload and download. T3 bandwidth in the US is up to 44.736 Mbps.
You should not use ISDN. Home office ISDN is typically implemented as ISDN Basic Rate Interface (BRI). ISDN BRI supports a data transmission bandwidth of 128 Kbps. An ISDN BRI includes 2 B-channels (each supporting 64 Kbps) that can carry data, voice, and other services. The ISDN BRI also includes one 16 Kbps D-channel that carries control and signaling information. The bandwidth is less than cable modem, the cost is higher, and special equipment is required at the customer location.
5. When you are on a service call, when is it acceptable to use a customer's telephone?
- Only after asking and receiving the customer's permission.
- Never.
- Anytime.
- Anytime, as long as it is business-related, even if it is not related to the customer's problem.
Answer: A
You should use a customer's telephone only after asking and receiving the customer's permission. Even then, you should limit your calls to business-related calls.
You should not feel that you can never use a customer's telephone, or that you would be out of line to ask permission to use the customer's telephone. There can be situations when you need to use the customer's telephone while troubleshooting or correcting the problem.
It is incorrect to believe that you can use a customer's telephone anytime you want. This would be especially wrong if you are making personal calls or calls that are not related to the customer's problem. Always get the customer's permission first and limit your calls to necessary business-related calls.
Some guidelines for appropriate communication skills and professionalism are as follows:
* Use proper language and avoid jargon, acronyms, slang
* Maintain a positive attitude.
* Listen and do not interrupt a customer.
* Be culturally sensitive.
* Be on time and contact the customer if you are running late.
* Avoid distraction such as personal calls, interacting with co-workers, and personal interruptions.
* Avoid arguing with customers and/or being defensive
* Do not minimize customers' problems
* Avoid being judgmental.
* Clarify customer statements by asking open-ended questions to narrow the scope of the problem and restarting the issue or question to verify understanding.
* Offer different repair/replacement options if applicable.
* Provide proper documentation on the services provided.
* Follow up to verify satisfaction.
* Deal appropriately with confidential materials.
6. What must you do when delivering a CRT display to a recycler for reclamation?
- You must remove cables, including the AC power cable.
- You must be careful to prevent breaking the screen.
- You must cover the display and break the CRT screen to prevent accidental breakage during shipment.
- You must remove the display case.
Answer: B
You must be careful to prevent breaking the screen when delivering a CRT display for recycling. The CRT contains phosphorous that can be reclaimed by some recyclers, but most recyclers cannot reclaim the phosphorous or anything else if the CRT (the tube) is broken. Also, when a CRT breaks, it implodes violently. The resulting broken and flying glass can cause injury. Because CRT monitors can be quite heavy, you should also wear a back brace for protection against injury.
You should not cover the display case or cables before delivering the CRT display for recycling. There is no need to remove the case or cables, and removing the case makes it more likely that the CRT might get broken.
You should not cover the display and break the screen. This will prevent most recyclers from being able to recover anything from the display. Also, when a CRT breaks, it implodes violently. The resulting broken and flying glass can cause injury.
7. What steps should you taken to clean a thermal printer?
Arrange the entries in the list in the order in which you should perform them. Place the first step at the top of the list.
Answer:
To clean a thermal printer, use the following steps:
* Turn the printer off and access the thermal printer head door.
* Release the print head by pressing the lever.
* Access the print head by moving the thermal ribbon to the side.
* Dampen a lint-free rag with isopropyl alcohol.
* Wipe the dampened rag across the print head several times.
* Allow the print head to dry.
* Return the ribbon cable to its original position on the print head.
*Place the print head and lever back into their original positions.
* Close the thermal print head door and turn the printer on.
8. What is necessary when connecting a laser printer directly to a wired network?
Answer:
- A USB port
- A FireWire port
- A network adapter
- A bluetooth adapter
Answer: B
When connecting a printer directly to the network, you can configure the printer to enable users to access the printer without having to connect through another computer. When connecting to the network, you must be an appropriate network adapter. Some printers still require a network computer to act print server for the printer while others have the print server as an integrated feature of the printer.
You do not need a Bluetooth adapter to connect a printer to a network. Bluetooth is a radio frequency connection method for peripheral devices. A Bluetooth adapter is needed for the printer to communicate with a Bluetooth enabled computer. Once the printer is connected to the computer, you can then share the printer to the network through the computer.
You do not need a FireWire or USB port to connect a printer directly to the network. Both are wired peripheral connections to computers, not network connections. Once the pinter is connected to the computer, you can then share the printer to the network through the computer.
- A solid state hard drive provides slower access times than a magnetic drive.
- A magnetic hard drive is less likely to be damaged if a running computer is dropped.
- A magnetic hard drive creates less heat than a solid state drive.
- A solid state had drive is quieter than a magnetic drive.
Answer: D
A solid state hard drive is quieter than a magnetic drive. A magnetic drive has a spinning disk that makes noise when it is accessed. A solid state drive stores data on a microchip and does not include any moving parts. Therefore, it makes less noise than a magnetic drive.
A magnetic hard drive is more likely to be damaged if a running computer is dropped. If you drop computer when a magnetic drive is spinning, it can cause the heads that read the magnetic media to crash.
The average magnetic hard drive creates about three time the heat of a SSD.
A solid state drive provides faster access time than a magnetic drive because it does not rely on mechanical parts to store and access data.
10. How do you prevent ESD when removing and replacing electronic components?
- Maintain low humidity in your work area.
- Wear a grounded anti-static wrist strap
- Leave components plugged in to a grounded outlet when changing components.
- Leave components sitting on an antistatic bag until needed.
Answer: B
You should wear a grounded anti-static strap when removing and replacing electronic components as a way of prevented electrostatic discharge (ESD). A grounded anti-static wrist strap helps to keep you, the computer, and the replacement components at the same ground level. ESD occurs when different ground levels come in contact with each other.
You should not leave computers plugged in to a grounded outlet when charging components. You should always turn off and unplug computers before removing and replacing components. Failure to do so can result in damage to the components and injury to the technician.
You should not leave components siting on a antistatic bag until needed. An antistatic bag is designed to route static to the surface of the bag to protect delicate components stored in the bag. Leaving a component siting on the outside of the bag is more likely to cause, rather than prevent, ESD.
You should not maintain low humidity in your work area. Lower humidity levels make ESD more likely to occur.
11. For which of the following should you implement QoS in a small office/home office (SOHO) environment?
- Instant messaging
- VoIP
- SSID
Answer: B
Voice over Internet Protocol (VoIP) is a digital voice service that uses the Internet rather than the normal phone network. When you implement VoIP, you should also implement Quality of Service (QoS) to give packets carrying VoIP traffic priority over other packets. This reduce the delay of voice packets and provides the best voice service.
QoS is not necessary for the services like e-mails and instant messaging because they are not as dependent upon the speedy delivery of packets as VoIP.
QoS is not related to the service set identifier (SSID) of a wireless access point (AP). An AP uses SSID to announce itself to the network so that clients can discover available APs. Disabling SSID can help prevent some wireless threats, such as war driving, which is searching for unsecured AP as a access networks. However, this is only effective against the most casual attempts. Dedicated utilities are available that enable hackers to locate APs, even when they do not broadcast their SSID.
12. Which statement correctly describes real vs. actual processor speed?
- Actual speed is affected by the amount of Ram.
- Real speed is affected by the speed of the Front Side Bus (FSB).
- Actual speed can be measured without connecting the processor to a computer.
- Real speed for a multi-core processor is calculated by adding the actual speed of each core.
Answer: A
Actual speed is affected by the amount of RAM. The actual speed of a processor is the speed at which it runs inside a specific system. It can be affected by the amount of RAM, the speed of the FSB, and other performance bottlenecks.
Real speed is not affected by the speed of the FSB. The FSB is the connection between the processor and RAM. It affects actual speed, but not real speed. Real speed (also know as rated speed) is the clock speed of the processor.
Actual speed cannot be measured without connecting the processor to a computer. Real speed can be measured without connecting the processor to a computer.
Real speed for a multi-core processor is not calculated by adding the actual speed of each core. Real speed for a multi-core processor is based on the real speed of each core.
13. You travel to locations beyond the suburbs of many cities in a small vehicle to research locations for future shopping centers. You often encounter inclement weather in the field. You need to select the appropriate Internet connection for uploading large photos and videos from the field in the shortest amount of time.
Which Internet connection type should you use?
- Satellite
- Cellular
- Cable
- Dial-up
Answer: B
You should use a cellular because you travel to many outdoor research using a small vehicle. A cellular Internet connection would allow you to be as mobile as possible and upload photos and videos from the field in a reasonable amount of time.
Because you travel to do outdoor research, you could not use satellite as your Internet connection. Satellites are beneficial for stationary remote usage. Satellite requires a small satellite dish and receiver similar to satellite TV, which prevents mobility. Subscribers can lose Internet access during inclement weather, which would be bad if you were trying to upload photos and videos in the field. The upload speed is usually significantly slower than the download speed. Some satellite systems also require a dedicated computer to control access from the customer end.
You cannot use a cable modem. Because you are mobile and need to upload data from the field, you would not have cable modem access. Most cable TV operators provide high-bandwidth Internet access. A standard cable TV coaxial cable is used as the signal carrier, and he only additional customer equipment is a cable modem. Data rates vary by provider and service contact and range from 1 megabit per second (Mbps) to 10 Mbps.
You would not use dial-up for your Internet connection. Dial-up uses a standard telephone connection, which is not available in the field. Dial-up would be too slow to upload photos and videos.
14. Which two are wireless data transferring technologies? ( Choose 2)
- Bluetooth
- DSL
- Satellite
- VoIP
Answers: A,C
Bluetooth is a wireless communication protocol that allows for the transferring of data over secure wireless connection. This communication protocol is popular with portable devices such as laptops and cellular telephones.
Satellite connections are wireless connections that are established via stationary dished on earth and connect with geo-stationary satellites in our atmosphere.
Infrared and cellular are also wireless data transfer technologies. Infrared Data Association (IrDA) defines the physical specification for infrared data transfer. Infrared has been used for connections to printers and personal digital assistant (PDAs), but it is being replaced by other wireless technologies. Infrared data transfer is limited to distances of about 1 meter.
Cellular communication is also wireless. Laptops with wireless cellular modems can transfer data using the same technology that cell phones use to connect to the internet. Some cell phones can also act as wireless modems.
A Digital Subscriber Line (DSL) is a compression technique that is implemented over telephone lines. It is not wireless.
Voice over Internet Protocol (VoIP) is a telecommunication protocol that allows for voice data to be transferred over P networks. VoIP requires a hard-wired connection and is therefore, not an appropriate answer.
Which question, when asked courteously, would be best first step in gathering information from the customer about the problem?
- "Is it connected properly?"
- "Can you try again to male it print?"
- "Do you know how it works?"
- "When did it last work?"
Answer: D
The first step in the information gathering process is to establish when or under what circumstances the problem first occurred. In this case, if the printer works with all other applications, the problems probably software-related. Avoid technical explanations unless the customer asks for them.
It may be necessary to ask the customer to check the cabling, but first find out when the problem occurred and eliminate user error and software-related problems.
Some basic principles of troubleshooting include the following:
* Performing backups before making changes.
* Assessing a problem systematically and dividing large problems into smaller components to be analyzed individually.
* Verifying the obvious to determine whether the problem is something simple.
* Researching ideas and establishing priorities.
* Documenting findings, actions and outcomes.
Some basic diagnostic procedures and troubleshooting techniques include the following:
* Identifying the problem by questioning the user and identifying user changes to the computer
* Analyzing the problem and its causes and make an initial determination of the problem.
* Establishing a theory of probable cause.
* Testing the theory.
* Testing related components including inspection, connections, and hardware and software configurations.
* Consulting vendor documentation.
* Evaluating results and taking addition steps if needed, such as consultation and the use of alternate resources such as manuals.
* Verifying full system functionality.
* Documenting activities and outcomes.
