A+ 220-801: Exam Set C1.3

D. 4.2 ms (milliseconds) is the typical latency of a SATA hard drive. When dealing with magnetic drives, latency is the delay in time before a particular sector on the platter can be read. It is directly linked to rotational speed. A hard drive with a rotational speed of 7200 RPM has an average latency of 4.2 ms.

51 . Which of the following measurements is the typical latency of a SATA hard drive? ❍ A. 300 MB/ s ❍ B. 7200 RPM ❍ C. 16 MB ❍ D. 4.2 ms

B. A maintenance kit includes a new fuser assembly, rollers, and more. Installing a maintenance kit is like changing a car's oil (although it isn't done as often).

52 . The marketing printer has been used for 4 years. What should you do for the printer? ❍ A. Clean the printer ❍ B. Install a maintenance kit ❍ C. Clear the counter ❍ D. Print a test page

C. The Type III PC Card slot can handle Type I, Type II, or Type III PC Cards, also referred to as PCMCIA cards. Type I cards are often flash memory cards. Type II cards might be network adapters or modems. Type III cards are usually hard drives.

53 . Which PC Card slot can manage all the various PC Cards? ❍ A. Type I ❍ B. Type II ❍ C. Type III ❍ D. Type IV

C. Because light is what affects the drum, the drum should remain sealed in the toner cartridge. Keep the cartridge away from magnets, too. If a toner cartridge breaks or forms a crack, recycle it and install a new toner cartridge.

54 . What should you never expose the drum of a laser printer to? ❍ A. Airflow ❍ B. Cold temperature ❍ C. A strong light source ❍ D. Toner dust

C. Use a power supply unit (PSU) tester to determine why a computer fails to boot. One of culprits could be a faulty power supply. A cable tester will check network cables only to see if they are wired correctly and have continuity. Loopback plugs are used to test network cards and serial ports. The tone and probe kit is used to test phone lines.

55 . Which tool should you use to determine why a computer fails to boot? ❍ A. Cable tester ❍ B. Loopback plug ❍ C. PSU tester ❍ D. Tone and probe kit

D. After installing something for a customer, teach the customer how to use it (at least the basics).

56 . You just installed a customer's printer and tested it. What should you do next? ❍ A. Recheck all connections ❍ B. Bill the customer ❍ C. Turn the printer on and off ❍ D. Show the customer the printer's basic functionality ❍ E. Install a maintenance kit

A, C, and E. The AM3, FM1, and G34 are all AMD CPU sockets. The AM3 is used to house Phenom II, Sempron, and Athlon II CPUs. The FM1 is used with the Llano CPU. G34 is a replacement of the F socket and is used with Opteron CPUs. These are all Pin Grid Array (PGA) sockets. The Intel LGA1155 works with Core i3, i5, i7, and Xeon CPUs. The older LGA775 works with Core 2 Duo, Core 2 Quad, and older Xeon CPUs.

57 . Which of the following are AMD CPU sockets? (Select the three best answers.) ❍ A. AM3 ❍ B. 1155 ❍ C. FM1 ❍ D. 775 ❍ E. G34

C. 128 KB total. Every core of a Core i5 CPU contains 32 KB of L1 cache. There are two core Core i5 CPUs; they have a total of 64 KB of L1 cache. And like in the question, there are four core Core i5 CPUs, with 128 KB total L1 cache.

58 . How much L1 cache does a Core i5 CPU with four cores contain in total? ❍ A. 32 KB ❍ B. 64 KB ❍ C. 128 KB ❍ D. 256 KB

C. L3 cache is shared by all of the cores of the CPU. L1 cache (often 32 KB per core) is built in to the CPU. L2 cache (often 256 KB per core) is built on to the CPU; it is also known as on-die.

59 . Which type of cache memory is shared by all cores of a CPU? ❍ A. L1 ❍ B. L2 ❍ C. L3 ❍ D. DRAM

A. Hyper-threading (for example, Intel HT) calculates two independent sets of instructions simultaneously, simulating two CPUs. HyperTransport is a high-speed link between various devices such as the CPU and northbridge on AMD systems.

60 . Which technology calculates two independent sets of instructions simultaneously, simulating two CPUs? ❍ A. Hyper-threading ❍ B. HyperTransport ❍ C. TurboBoost ❍ D. Multi-core

B. The thermal design power (TDP) of a CPU is measured in watts. For example, a typical Core i5 CPU might be rated at 95 watts. Older single-core CPUs were rated as high as 215 watts. The less the wattage rating, the less the computer's cooling system needs to dissipate heat generated by the CPU.

61 . How is TDP measured? ❍ A. Volts ❍ B. Watts ❍ C. Ohms ❍ D. Amps

D. The tone and probe kit allows you to find the network drop in the wiring closet. How this would work is you would take the tone generator portion of the tone and probe kit and connect it via RJ45 to the network port in the user's cubicle. Switch it on so it creates tone. Then go to the wiring closet (or network room or server room) and use the probe (an inductive amplifier) to find the tone. You do this by pressing the probe against each of the cables.

62 . You are tasked with plugging a network patch cable into an inactive drop within a user's cubicle. Which tool enables you to find the correct network drop in the wiring closet so that you can make the port hot? ❍ A. PSU tester ❍ B. Multimeter ❍ C. Cable tester ❍ D. Tone and probe kit

A. SATA power connections have 3.3, 5, and 12-volt wires. There are no negative voltage wires on SATA power connections. Molex power connections use 5 V and 12 V only, but SATA includes the 3.3 volt line. In this scenario you should test the SATA power connector and the main power connector from the power supply with your trusty PSU tester. (Most PSU testers will have an SATA power port in addition to the main 24-pin power port.)

63 . You think that the power supply in your PC might be failing, causing issues with a SATA drive. You decide to test the SATA drive. What are the standard voltages of a SATA connection on an ATX power supply?

B. Print a test page after doing preventative maintenance to a laser printer. Normally when you maintenance a laser printer, you will power it down and unplug it before any work begins. So there is no need to restart the printer; when you finish, you simply start it. There is also no need to restore a printer to factory settings unless it fails. The paper trays probably still have paper in them, and regardless, part of preventative maintenance is to fill the trays. But printing the test page should be last.

64 . You just installed a maintenance kit to a laser printer. What should you do next? ❍ A. Restore the printer to factory settings ❍ B. Print a test page ❍ C. Refill the paper trays ❍ D. Restart the printer

B. As of the writing of this book, external SATA (eSATA) runs at 3.0 Gbps, which is the fastest of the listed answers. 6.0 Gbps eSATA is unquestionably on the horizon. USB 2.0 is limited to 480 Mbps. IEEE 1394a is limited to 400 Mbps. 1000BASE-T is a networking connection that offers 1000 Mbps. However, if you had USB 3.0, your data rate would be 5.0 Gbps, and that would be the winner. And although typical IEEE 1394b devices run at 800 Mbps, the full specification calls for a maximum of 3.2 Gbps, slightly edging out eSATA.

65 . Which type of external connection allows for the fastest hard drive data rate? ❍ A. USB 2.0 ❍ B. eSATA ❍ C. IEEE 1394a ❍ D. 1000BASE-T

C. Bluetooth works best for a direct wireless connection; in fact, it is the only wireless connection listed. FireWire and IEEE 1394 are effectively the same (IEEE 1394 is the equivalent PC standard), and IEEE 1284 is the standard for wired parallel port printing.

66 . What is the best solution for making a direct wireless connection between a laptop and a printer? ❍ A. FireWire ❍ B. IEEE 1284 ❍ C. Bluetooth ❍ D. IEEE 1394

A. Your local municipality's electrical and safety code requires that all cables be installed properly. No cables can be left hanging or lying on the floor. Rerun the cables through the walls and ceiling, or use a special conduit to run the cables in a way that is safe. This in a nutshell is known as cable management.

67 . A company has Category 5e cabling lying on the floor in several locations. Which of the following is the most appropriate action to take? ❍ A. Reroute the cables using a protective material ❍ B. Secure the cables to the floor with tape ❍ C. Install a wireless network ❍ D. Move the computers closer to the server

...

68 . You've opened a CRT. Before working on the CRT, what should you do? ❍ A. Discharge the monitor ❍ B. Clean the monitor ❍ C. Degauss the monitor ❍ D. Unplug the monitor

C. Everyone has urgent calls sometimes. But, are they actually urgent? Determine this, and then get back to work as quickly as possible. Don't text, e-mail, or use the phone while at the job site.

69 . You are on a service call and receive an urgent phone call. What action should you take? ❍ A. Leave the site and take the call. ❍ B. Talk with the person while working. ❍ C. Ask to be excused, and after determining the urgency of the call, go back to work. ❍ D. Ask to be excused, and after determining that it is not a truly urgent call, get right back to work while talking on the phone.

C. Amperage can be defined as electric current or the movement of electric charge. It is measured in amps (A). Voltage is a representation of potential energy, measured in volts (V). Wattage is electric power, the rate of electric energy in a circuit, measured in watts (W). Impedance is the amount of resistance to electricity, measured in ohms (Ω).

70 . Which of the following is defined as the movement of electric charge? ❍ A. Voltage ❍ B. Wattage ❍ C. Amperage ❍ D. Impedance

D. Homes in the United States are wired for 120 volts alternating current (AC). The wires inside a PC might be 12 volts direct current (DC), 5 volts, or 3.3 volts.

71 . What are the standard voltages in the United States for a home and for the internal workings of a PC?

D. Use a simple moist cloth, not too wet; you don't want to get any liquid inside the printer. Alcohol will be too strong, and WD-40 will cause damage in the long run. Soap and water can be used to clean the outside of a computer case.

72 . Which of the following should be used to clean a laser printer's rubber rollers? ❍ A. Soap and water ❍ B. WD-40 ❍ C. Isopropyl alcohol ❍ D. A moist cloth

Answer: C. Installing cable Internet would be the best solution given the parameters of this scenario. It is the cheapest of the four technologies listed above, and it is a broadband Internet solution. ISDN is generally known as a narrowband technology. Although there is a type of Broadband ISDN, that is designed to handle high-bandwidth applications, it is quite expensive. T-1 and T-3 lines are dedicated high-speed connections that will not fit the customer's tight budget.

73 . One of your customers wishes to have broadband Internet access set up in her home office. She is on a tight budget and doesn't want to pay for additional equipment. Which of the following technologies would be the best solution? ❍ A. ISDN ❍ B. T-3 ❍ C. Cable modem ❍ D. T-1

A. The universal naming convention (UNC) \\ computername\ C $ or \\ ipaddress\ C $ would be the best option. This allows the administrator to connect to the hidden share for the root of C. If the administrator has issues connecting to a network volume with a particular share name, they should use the hidden share. This can be done by computer name or by IP address. It would not be necessary to connect utilizing HTTP. Also, it is not wise to share the C: drive with a share name called "C."

74 . An administrator cannot connect to a network volume. Which of the following is the best path for the administrator to use? ❍ A. \\ computername\ C $ ❍ B. \\ ipaddress\ sharename ❍ C. // computername/ C $ ❍ D. http:// computername/ C ❍ E. \\ computername\ sharename

C. In DHCP, set a reservation by MAC address. In this scenario it is most likely that the clients are connecting to the printer by IP address. The Internet Printing Protocol (IPP) will often be used in this manner. By default, the moment the new printer is connected to the network, it will acquire an IP address from the DHCP server— a new IP address, different from the one used by the old printer. This will cause the clients to fail when attempting to connect, and print, to the new printer. To prevent this, we go to the router (or other DHCP device) and configure a MAC address reservation. The MAC address of the printer (which might be on a label or can be accessed from the onscreen display) can be plugged into the DHCP server and reserved to a specific IP address. Of course, a better option would be to simply configure the printer to use a static IP address.

75 . A co-worker at a satellite office reports that a new replacement shared workgroup printer has arrived. It is the same model as the old one. Your co-worker replaced the old printer and connected all the cables to the new printer. What is the easiest way to ensure that all the client computers can connect to the new printer via IPP? ❍ A. Name the new printer with the old printer name ❍ B. Allow the printer to acquire a DHCP address ❍ C. In DHCP, set a reservation by MAC address ❍ D. Have your co-worker print the configuration page