Exam A

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xena3733
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259936
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Exam A
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2014-02-09 09:04:07
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PC hardware networking laptops printers operational procedures
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practice exam
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  1. which of the following are components you might find inside a PC?

    a) CPU
    b) Motherboard
    c) keyboard
    d) printer
    e) RAM
    f) cable modem
    a, b, e: CPU, motherboard, RAM

    other common components are the power supply, adapter cards and hard drives.
  2. Which device stores data over the long term?

    a) CPU
    b) RAM
    c) hard drive
    d) video card
    c. hard drive.

    it stores data over the long term.  It stores the OS (operating system) and data in a non-volatile fashion, which means that it will not be erased when the computer is turned off.
  3. You would normally plug speakers into what type of port?
     
    a) parallel
    b) DVI
    c) 1/8-inch TRS
    d) 1/4-inch TRS
    c. 1/8-inch (mini-jack).

    They are the most common for speaker connections. speakers normally plug into a sound card or motherboard.
  4. to what type of expansion slot would you install an x16 card?

    A)PCI
    B)PCIe
    C)AGP
    D)PCI-X
    B) PCIe (PCI Express).

    PCIe slots accept x1, x4, and x16. It is by far the most common expansion slot for video cards
    (this multiple choice question has been scrambled)
  5. What part of the computer checks all your components during boot?

    A)EEPROM
    B)BIOS
    C)POST
    D)CMOS
    C) POST

    Power-On-Self-Test (POST). it is part of BIOS (basic input output system). it runs a self-check of the computer system during boot and stores many of the parameters of the components within the CMOS.
    (this multiple choice question has been scrambled)
  6. tim installs a new CPU in a computer. After a few hours, the processor starts to overheat. which of the following might be the cause?

    A)thermal compound was not applied.
    B)the CPU is not compatible with the motherboard.
    C)the CPU is not properly seated.
    D)the CPU is not locked down.
    A)thermal compound was not applied.

    Without the thermal compound applied, the processor might overheat after a few hours.
    (this multiple choice question has been scrambled)
  7. If you have a flat-panel monitor, what type of technology is most likely being used?

    A)LCD
    B)CRT
    C)RGB
    D)DVI
    A) liquid crystal display (LCD) is most commonly the type of technology that a flat-panel monitor uses.
    (this multiple choice question has been scrambled)
  8. which o f the following could cause the POST to fail?

    A)CPU
    B)power supply
    C)memory
    D)hard drive
    E)CD-ROM
    A) and d).

    the CPU and memory both need to be installed properly for the POST to run (and to pass).
    (this multiple choice question has been scrambled)
  9. which expansion bus uses lanes to transfer data?

    A)PCI
    B)PCIe
    C)PCI-X
    D)IDE
    B) PCIe (Express).

    uses serial lanes to send and receive data. That means one bit at a time per lane.
    (this multiple choice question has been scrambled)
  10. which of the following are 64-bit CPUs?

    A)x64
    B)Phenom II
    C)Core i5
    D)Pentium IV
    C) and b) Core i5 and Phenom II.

    Intel's core i5 and AMD's phenom II are both 64-bit CPU's
    (this multiple choice question has been scrambled)
  11. which kind of socket incorporates "lands" to ensure connectivity to a CPU?

    A)chipset
    B)PGA
    C)LGA
    D)copper
    C)land grid array (LGA).

    is the type of socket that uses "lands" to connect the socket to the CPU. LGA sockets are often a brass alloy or have gold contacts.
    (this multiple choice question has been scrambled)
  12. how should you hold RAM when installing it?

    A)by the edges
    B)with tweezers
    C)by the front and back
    D)with and IC puller
    A) by the edges.

    hold RAM  by the edges to avoid contact with the pins, chips, and circuitry. touching the front and back is not advised because you will touch the chip on the RAM module.  tools are not needed and if they are used they should be non-metallic.
    (this multiple choice question has been scrambled)
  13. which device should you use to protect against power outages?

    A)surge protector
    B)fedex
    C)multimeter
    D)UPS
    D)UPS.

    is the only item listed that protects the computer from power outages like blackouts and brownouts.
    (this multiple choice question has been scrambled)
  14. which  of the following uses a 24-pin main motherboard power connector?

    A)ATX 5V 2.0
    B)ATX 12V 1.3
    C)ATX 12V 2.0
    D)ATX
    C) ATX 12V 2.0.

    the ATX 12V 2.0 (and higher) combined the 20-pin and 4-pin connectors used in ATX 12V 1.3 into one 24-pin connector.
    (this multiple choice question has been scrambled)
  15. what is the maximum data transfer rate of SATA revision 3.0?

    A)6.0 Gb/s
    B)150 MB/s
    C)3.0 Gb/s
    D)1.5 Gb/s
    A) 6.0 Gb/s.

    SATA revision 3.0 can transfer a maximum of 6.0 Gb/s (6 gigabits per second). this allows a peak throughput of 600 MB/s (600 megabytes per second).
    (this multiple choice question has been scrambled)
  16. A compact disc you use is rated at a speed of 48x. what does the x refer to?

    A)1.33 MB/s
    B)4.5 MB/s
    C)150 KB/s
    D)1.32 MB/s
    C)150 KB/s.

    the typical speed for a CD-ROM drive is 48x. the x is equal to 150 KB/s.
    (this multiple choice question has been scrambled)
  17. which type of adapter broadcast programming?

    A)network interface card
    B)TV tuner
    C)video capture card
    D)firewire card
    B) TV tuner.

    the tv tuner card accepts television broadcast programming. it will usually have cable-in and antenna-in RG-6 ports.
    (this multiple choice question has been scrambled)
  18. which of the following types of custom PCs requires an HDMI output?

    A)gaming PC
    B)CAD/CAM workstation
    C)HTPC
    D)virtualization workstation
    C) Home theater PC (HTPC).

    requires a high-definition multimedia interface (HDMI) output on the video card so that it can connect properly to the HDMI port on a television.
    (this multiple choice question has been scrambled)
  19. how many pins are inside a SATA data connector?

    A)24
    B)15
    C)127
    D)7
    D)7.

    the SATA data connector has 7 pins.
    (this multiple choice question has been scrambled)
  20. which of the following ports would you most likely connect a printer to?

    A)firewire
    B)LPT
    C)eSATA
    D)USB
    D)USB.

    a printer would most likely be connected to a universal serial bus (USB) port.
    (this multiple choice question has been scrambled)
  21. what is the delay in the RAM's response to a request from the memory controller called?

    A)latency
    B)lag
    C)fetch interval
    D)standard deviation
    A)latency.

    memory latency or CAS (column address strobe) latency happens when a memory controller tries to access data from a memory module. it is a slight delay usually measured in nanoseconds while the memory module responds to the memory controller.  the memory controller (northbridge) has a specific speed at which it operates. if the CPU asks the chip for too much information at once, this might increase latency time while the memory controller works.
    (this multiple choice question has been scrambled)
  22. what is the minimum number of hard drives necessary to implement RAID 5?

    A)4
    B)3
    C)2
    D)5
    B)3.

    because RAID 5 uses striping with parity, a third disk is needed. you can have more than three disks as well.
    (this multiple choice question has been scrambled)
  23. a user's time and data keeps resetting to January 1, 2000. what is the most likely cause?

    A)the windows date and time properties window needs to be modified.
    B)windows needs to be updated.
    C)the BIOS needs to be updated.
    D)the lithium battery needs to be replaced.
    D)the lithium battery needs to be replaced.

    if the time and date keep resetting to a time such as jan. 1, 2000 chances are that the lithium battery needs to be replaced.
    (this multiple choice question has been scrambled)
  24. what type of adapter card is normally plugged into a PCIe x16 adapter card slot?

    A)video
    B)sound
    C)modem
    D)NIC
    A)video.

    the PCI Express (PCIe) x16 expansion slot is used primarily for video.
    (this multiple choice question has been scrambled)
  25. to prevent damage to a computer, the computer should be connected to what?

    A)a UPS
    B)a power inverter
    C)an AC to DC converter
    D)a power strip
    A)a UPS.

    an uninterruptible power supply (UPS) protects computer equipment against surges, spikes, sags, brownouts, and blackouts.
    (this multiple choice question has been scrambled)
  26. a computer has 1024MB of RAM. it has 128MB of shared video memory.  How much RAM is available to the operating system?

    A)512MB
    B)896MB
    C)448MB
    D)1024MB
    B)896MB.

    the amount of shared video memory is subtracted from the total RAM.  So if a computer has 1024MB RAM (1GB) and the video controller is sharing 128MB of that RAM, the remainder for the rest of the system is 896MB.  This is common with motherboards that have integrated video cards and laptops.
    (this multiple choice question has been scrambled)
  27. Which of the following components could cause the POST to beep several times and fail during boot?

    A) power supply
    B) RAM
    C) sound card
    D) hard drive
    B) RAM.

    RAM is one of the big four that can cause the POST to fail.
    (this multiple choice question has been scrambled)
  28. which of the following is the proper boot sequence of a PC?

    A)boot loader, operating system, CPU, RAM
    B)POST, CPU, boot loader, operating system
    C)CPU, POST, boot loader, operating system
    D)CPU, RAM, boot loader, operating system
    C) the CPU must be installed correctly for the POST to begin.  after the POST is successful, the boot loader then runs, and then the operating system comes up. that is, if there are no boot loader errors.  the CPU is crucial if installed incorrectly, the system will not POST making it difficult to troubleshoot.
    (this multiple choice question has been scrambled)
  29. roger informs you that none of the three SCSI drives can be seen on his SCSI chain. what should you check?

    A)whether the host adapter is terminated and that the disks have consecutive ID's of 1, 2 and 3.
    B)whether the SCSI adapter has an ID of 7 or 15 and if all the disks are terminated and have consecutive ID's of 0,1, and 2
    C)whether the host adapter has an ID of 0 and the disks are terminated with the same ID.
    D)whether the SCSI adapter has an ID of 7 and if both ends of the chain are terminated, and that each disk has a unique ID.
    D) the adapter should use the ID 7. both ends of the SCSI chain need to be terminated. some SCSI cards and devices auto-terminate.  each disk needs a unique ID. the particular ID you give the disks doesn't matter.
    (this multiple choice question has been scrambled)
  30. which of the following had the fastest data throughput?

    A)hard drive
    B)RAM
    C)USB
    D)CD-ROM
    B)RAM.

    RAM is a much faster than the rest of the options listed.
    (this multiple choice question has been scrambled)
  31. which kind of form factor is commonly found in HTPC's?

    A)microATX
    B)nano-ITX
    C)PICO-ITX
    D)ATX
    A)microATX.

    home theater PCs (HTPCs) commonly use the microATX form factor.
    (this multiple choice question has been scrambled)
  32. which of the following CPU cooling methods is the most common?
    A)heat sink and fan
    B)liquid nitrogen
    C)heat sink
    D)liquid cooling
    A) heat sink and fan.

    the heat sink helps the heat to disperse away from the CPU, while the fan blows the heat down and through the fins.
    (this multiple choice question has been scrambled)
  33. you need to store 4 GB of data to an optical disc (without using compression). which of the following will meet your requirements? (select the two best answer)
    a)CD-ROM
    b)DVD-RW
    c)CD-RW
    d)BD-R
    b & d) dvd-rw and bd-r.

    a rewritale dvd-rw and a writeable blu-ray (BD-R) meet the requirements. dvds can store between 4.7 and 17 GB of data. standard blu-ray discs can store between 25 and 50 GB of data.
  34. which of the following is not a video port?
    A)display port
    B)DVI
    C)HDMI
    D)CNR
    D)CNR.

    communications and networking riser (CNR) is not a video port. it is an adapter card slot used by audio and telephony equipment.
    (this multiple choice question has been scrambled)
  35. what does a CAD/CAM workstation require? (select the two best answers).

    a)powerful CPU
    b)HDMI output
    c)surround sound
    d)high-end video
    a & d).

    a computer-aided design (CAD)/computer-aided manufacturing (CAM) workstation requires a powerful CPU, high-end video, and as much RAM as possible
  36. you need to install the fastest hard drive possible. which port should you connect it to?
    A)IDE
    B)SATA
    C)eSATA
    D)USB
    B)SATA.

    you should connect the hard drive to a SATA port.  SATA revision 3.0 offers 6.0Gb/s data transfer resulting in amaximum throughput of 600MB/s
    (this multiple choice question has been scrambled)
  37. what type of power connector is used for an x16 video card?
    A)PCIe 6-pin
    B)P1 24-pin
    C)mini 4-pin
    D)molex 4-pin
    A)PCIe 6-pin.

    an x16 card is a PCI Express card. it requires one or two PCIe 6-pin power connectors or an 8-pin connector.
    (this multiple choice question has been scrambled)
  38. which kind of current does a typical desktop PC draw from a wall outlet?
    A)alternating current
    B)direct current
    C)draw current
    D)neutral current
    A)alternating current.

    AC is the standard in the united states. the computer should be connected to a 120V AC outlet.
    (this multiple choice question has been scrambled)
  39. which of the following are output devices? (select the 3 best answers).
    a)speakers
    b)keyboard
    c)mouse
    d)printer
    e)display
    f)stylus
    a,d,e)speakers, printer, display.

    speakers output sound. printer outputs paper with text and graphics. a display (or monitor) displays video.
  40. a customer complains that he gets a headache when he's viewing his display for more than an hour. what should you do?
    A)raise the resolution to a higher setting
    B)dim the lights near the customer's desk
    C)upgrade the video connector from DVI to VGA
    D)install an antiglare
    D)install and antiglare.

    you should install an antiglare filter on the monitor. by reducing glare, a person's eyes react better to the display and so the customer can use the computer longer without getting a headache
    (this multiple choice question has been scrambled)
  41. what does the b in 1000 Mbps stand for?

    A)bytes
    B)bits
    C)megabytes
    D)bandwidth
    B) the b in 1000 Mbps stands for bits.
    (this multiple choice question has been scrambled)
  42. the IP address 192.168.1.1 uses what addressing scheme?
    A)64-bits
    B)128-bit
    C)32-bits
    D)40-bits
    C)32-bits.

    there are 32 bits in a standard IPv4 address. in this case, the binary equivalent of the IP numbers would be 192=11000000, 168=10101000, 1=00000001, and 1=00000001. if you count all the binary bits, you end up with 32 in total. a 32-bit dotted-decimal address.
    (this multiple choice question has been scrambled)
  43. when running cable through drop ceilings, what type of cable do you need?
    a)PVC
    b)category 5
    c)strong cable
    d)plenum
    • d)plenum-rated cable.
    • needs to be installed wherever a sprinkler system cannot get to, including ceilings, walls, and plenums (airways). plenum-rated cable has a protective covering which burns slower and gives off less toxic fumes.
  44. the wireless protocol 802.11n has a maximum data transfer rate of what?
    A)600 Mbps
    B)11 Mbps
    C)54 Mbps
    D)480 Mbps
    A)600 Mbps.

    802.11n runs at a maximum of 600Mbps.
    (this multiple choice question has been scrambled)
  45. what device connects multiple computers together in a LAN?
    A)firewall
    B)router
    C)switch
    D)modem
    C)switch.

    a switch connects computers together in a local area network (LAN). in SOHO networks, it is usually a part of a multifunction network device. in larger networks, the switch is an individual device that has 12, 24, 48, or 96 ports.
    (this multiple choice question has been scrambled)
  46. the IP address 192.168.1.1 should have what default subnet mask?
    A)255.255.255.0
    B)255.0.0.0
    C)255.255.255.255
    D)255.255.0.0
    A)255.255.255.0.

    192.168.1.1 is a private class c address and therefore should have the subnet mask 255.255.255.0, the standard default subnet mask for class c.
    (this multiple choice question has been scrambled)
  47. what is the minimum category cable needed for a 1000BASE-T network?
    A)category 5e
    B)category 5
    C)category 3
    D)category 6
    A)category 5e.

    the minimum cable needed for 1000BASE-T networks is category 5e.
    (this multiple choice question has been scrambled)
  48. which of these IP addresses can be routed across the internet?
    A)192.168.1.1
    B)129.52.50.13
    C)10.52.50.13
    D)127.0.0.1
    B)129.52.50.13.

    the only public address (needed to get onto the internet) is 129.52.50.13
    (this multiple choice question has been scrambled)
  49. what port number does HTTP use?
    A)21
    B)80
    C)110
    D)25
    B)80.

    the hypertext transfer protocol (HTTP) uses port 80 by default.
    (this multiple choice question has been scrambled)
  50. what is the most commonly used network topology?
    A)bus
    B)star
    C)mesh
    D)ring
    B)star.

    the star topology is the most common. this is when computers are cabled to a central connecting device such as a switch.
    (this multiple choice question has been scrambled)
  51. what is the meaning of full duplex?
    A)transmitting and receiving data
    B)transmitting and receiving data simultaneously
    C)transmitting data only
    D)receiving data only
    B)transmitting and receiving data simultaneously.

    full duplex means that a network interface card (NIC) can transmit and receive data at the same time
    (this multiple choice question has been scrambled)

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