CompTIA A+ 220-902 Practice Test 2
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What is the SXGA display resolution?
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1280x1024
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What is the SXGA aspect ratio?
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5:4 aspect ratio
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What is the VGA resolution?
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1024x768
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What is the UXGA display resolution?
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1600x1200
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What is the WUXGA aspect ratio?
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16:10 aspect ratio
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What is the WUXGA display resolution?
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1920x1200
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You're troubleshooting a malfunctioning LED display on a notebook computer system. An external monitor correctly displays the output from the notebook. What could be the cause?
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Failed backlight
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What identifies the Interface ID component of an IPv6 address?
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-The last 4 quartets of an IPv6 address -the last 64 bits of an IPv6 address
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Your motherboard has two memory slots and supports a maximum of 8 GB of RAM. After installing two 4 GB modules and booting your system, you find that Windows only recognizes 3.5 GB of RAM. What should you do?
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Upgrade to a 64-bit version of Windows
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You have a motherboard that uses a 24-pin ATX connector. Which types of power supply could you use with this motherboard?
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A power supply with a 20-pin ATX and a +4-pin connector A power supply with a 24-pin ATX connector only
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What port does the RDP protocol run on?
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Port 3389
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What port does the POP3 protocol run on?
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Port 110
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What port does the LDAP protocol run on?
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Port 389
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What port does the NTP protocol run on?
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Port 123
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What component is a non-volatile memory technology for saving system settings when the computer is powered off?
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EEPROM chips
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Your motherboard has sockets for 184-pin DIMM RAM. Which type of RAM should you install?
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DDR
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What type of internet connection service allows you to be truly mobile while maintaining your Internet connection?
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Cellular
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What power supply feature helps prevent circuit overloads by balancing the current flow?
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Dual rail
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Where is the best place to place a wireless access point (WAP) to provide?
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Above the area of coverage
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You are removing screws within a computer, but several have fallen into places you can't reach. Which tool would help retrieve the small screws?
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Extension magnet
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What tweezer-like tool, usually spring loaded in the open position, is used to remove integrated circuit chips?
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IC extractor
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What two things best describes an IPv6 address?
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-Eight hexadecimal quartets -128-bit address
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What command verifies that TCP/IP is working correctly on a local computer?
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Ping 127.0.0.1
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How do you find the hostname for a given IP address?
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ping -a
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How do you find the IP address for a given hostname?
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Nslookup
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What is the original SATA standard?
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SATA1
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What speed does SATA1 provide?
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1.5 Gbps
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What speed does SATA2 support?
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3 Gbps
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What speed does SATA3 support?
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6 Gbps
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What is a subset of other SATA standards used specifically for externally connected devices?
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eSATA
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Which tool would you use to grab and lift small objects?
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3-prong holder
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The number of pixels displayed on the screen.
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Resolution
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The number of times in one second the GPU draws a frame
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Refresh Rate
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What is an optimal refresh rate?
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Between 75 Hz and 85 Hz
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What shape is the ExpressCard /54?
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L-shaped
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How wide is the ExpressCard /54?
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34mm at the connector end, but 54mm wide on the outside edge
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What shape is the ExpressCard /34?
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Rectangular
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How wide is the ExpressCard /34?
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34mm
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You're troubleshooting a malfunctioning LCD display on a notebook computer system. After confirming that the notebook is receiving AC power, you plug in an external monitor. The external monitor does not display the output from the notebook after pressing the Fn key to toggle the display. What could be the cause?
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Failed video adapter
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What component in a laser printer charges the paper to attract toner?
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Transfer roller
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What component in a laser printer prepares the photosensitive drum for writing by causing it to receive a negative electrostatic charge?
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Primary corona
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What component in a laser printer uses a laser beam to charge its surface in a pattern of the page's image? The toner sticks to the charged areas
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Drum
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What component in a laser printer attaches the toner to the paper by pressing and melting it?
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Fuser
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Lately your computer is spontaneously shutting down after only a few minutes of use. What is the most likely cause?
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Overheated CPU
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What is an early sign of a failing drive?
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A clicking noise when reading or writing data
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Laptop memory uses SODIMM and UniDIMM packages with SDRAM and DDR/DDR2/DDR3/DDR4 memory. What are these modules sometimes called?
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MicroDIMMs
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Since it has no moving parts, a CPU will usually work properly for several years. What common factor might cause a SPU to fail prematurely?
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Electrostatic discharge
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What are advantages of client/server networks?
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-scalability -centralized administration -centralized network services and resources
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You have an existing computer running Windows 10 Enterprise. You want to configure a RAID 5 array in the computer. You install three new SATA drives, then use the RAID controller integrated into the motherboard to define a RAID 5 array using them. When you boot the computer, Windows does not show the logical RAID drive you just created. What should you do?
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Install the drivers for the motherboard RAID controller
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You have a desktop computer that uses a 250 watt power supply. You recently added a 4-disk RAID 10 array to the system and now it spontaneously shuts down. What should you do?
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Upgrade to a power supply that provides more watts
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You want to purchase a motherboard that has integrated sound with digital audio output. What port would you likely find on the motherboard faceplate that indicates digital audio support?
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S/PDIF
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What network technology is packaged as part of a BRI plan?
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ISDN
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What is a standard ISDN offering for household services?
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Basic Rate Interface (BRI)
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What LAN device receives a signal on one port, and forwards that signal only to the port where the destination device is connected?
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Switch
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What are three printer languages?
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PCL Escape Codes PostScript
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Which connectors are part of the system case and connect to header pins on the motherboard?
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Power switch Reset switch HDD LED activity Case speakers
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A user has created a complex spreadsheet on her workstation containing many graphs and charts. She sent the document to an older network laser printer that is shared by everyone in her department. When she picked up the output only the top half of each page was printed the bottom half was blank. What should you do?
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Install additional memory in the printer.
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A user complains that his USB scanner no longer works. You check Device Manager and see an icon with a black down arrow on it. What should you do?
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Enable the device in Device Manager
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What icon in Device Manager identifies a device with a problem?
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An exclamation mark
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When you print from your laser printer, the paper contains faint images from previous printouts. What components should you check?
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Rubber scraper, Discharge lamp
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What component on a printer removes any remaining toner from the OPC drum after a page is printed?
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A rubber scraper
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What component on a printer removes any remaining electrical charge from the OPC drum?
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Discharge lamp
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What component on a printer charges the drum prior to writing the image?
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Primary corona
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What component on a printer charges the paper to attract the toner?
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Secondary corona
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If the primary and secondary coronas are faulty what would the image look like?
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It might have streaks or missing parts
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What should you do if the toner isn't sticking to the paper?
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Check the transfer roller
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What object is installed between the system case and the motherboard's back I/O ports?
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Faceplate
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What objects are placed between the motherboard and the case and prevents the motherboard circuits from touching the system?
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Standoffs
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What utility would you use to view current connections and active sessions and ports on a computer?
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Netstat
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What is the address range of the first octet of Class A addresses?
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1-126
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What is the address range of the first octet of Class B addresses?
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128-191
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What is the address range of t he first octet of Class C addresses?
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192-223
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You have a user who takes his laptop home every day after work. When he's working in the office, the laptop must get an IP address from the DHCP server so you configure it to obtain IP and DNS information automatically. When he's working from home, the laptop must use IP and DNS information that connects with his home network. Which IP addressing method can you use to make sure he gets a network connection at home?
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Alternate IP configuration
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What best describes how a switch functions?
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It connects multiple cable segments (or devices), and forwards frames to the appropriate segment
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What is an advantage of RAID 5 over RAID 1?
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RAID 5 improves performance over RAID 1
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What RAID type provides only fault tolerance but no performance benefit?
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RAID 1 (mirroring)
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What RAID type provides fault tolerance and improved performance?
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FAID 5
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How many disks in a set can a RAID 5 and RAID 1 sustain?
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One
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Command that resolves (looks up) the IP address of the specified hostname
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nslookup
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Command that tests connectivity between devices and shows the routers in the path between the two devices
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tracert
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Command that sends an ICMP echo request/reply packet to a remote host
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ping
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Command that displays current connections and incoming and outgoing connections
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Netstat
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A few simple replies to this request from the remote host indicates that a connection exists between sender and receiver
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Ping
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This command displays active sessions, ports, sockets and the local routing table
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netstat
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When used with the -t option, this command performs a continuous connection test
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ping
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You have installed a device in your system and have run the Add a Device wizard from the Control Panel. Under what circumstance would it be appropriate to continue with the wizard if the device was not discovered?
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The device doesn't support plug and play
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What are two major disadvantages to overclocking the CPU?
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Increased heat output, voided warranty
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A host wants to send a message to another host with the IP address 115.99.80.157. IP does not know the hardware address of the destination device. Which protocol can be used to discover the MAC address?
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Address Resolution Protocol (ARP)
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What terms refer to a network resource sharing model that uses access control lists saved on each computer?
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Workgroup Peer-to-peer
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What is true of most newer SATA drives?
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They are hot swappable, which means -They can be added and removed without shutting down the computer -Windows automatically detects the device, configures a driver (if one is not already installed), and enables the device
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While troubleshooting a network connection, you decide to use the ping command. Which switch allows for a continuous ping?
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-t
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How do you stop a continuous ping?
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Ctrl + C
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What is the Automatic Private IP Addressing (APIPA) range?
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169.254.0.1 - 169.254.255.254
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You are troubleshooting connectivity between your computer and the www.widgets.com server, whose IP address is 192.168.1.1. What command tests connectivity to the device as well as name resolution?
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Ping www.widgets.com
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What cable standard provides data transfers of up to 800 Mbps and a cable length of 100 meters?
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IEEE 1394b
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What cable standard provides for data transfers of up to 400 Mbps and a cable length of 4.5 meters?
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IEEE 1394a
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What cable standard allows for data transfer rates of 480 Mbps and cable lengths up to 5 meters?
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USB 2.0
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What cable standard has a data transfer maximum of 2 Mbps with a maximum cable length of 10 meters?
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IEEE 1284 (parallel)
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What is the maximum data transfer speed for USB 3.0 devices?
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5 Gbps
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What is the maximum data transfer speed of USB 2.0 devices?
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480 Mbps
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What is the maximum data transfer speed of USB 1.0 devices?
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1.5 Mbps
