Comptia 901 Practice Questions
Which of the following display standards use(s) the 4:3 aspect ratio? (Select all that apply) XGA SXGA UXGA WUXGA
XGA UXGA
A monitor filter used to reduce reflection from the surface of a CRT or LCD display is called: Widescreen Antiglare Flat panel Privacy filter
antiglare
The relative horizontal and vertical size of a digital image displayed on the graphics monitor screen is referred to as: Frame rate Screen resolution Aspect ratio Native resolution
aspect ratio
The brightness of an LCD display screen is measured in: Hz Lumens dB cd/m2
cd/m2
What is the maximum length for external SATA (eSATA) cable? 5 meters 2 meters 1 meter 18 inches
1 Meter
In laser printing, toner falling off of the printed copy indicates a problem with: Toner cartridge Print head Cleaning blade Fusing unit
Fusing Unit
What is the maximum data transfer rate supported by the SATA 1.0 standard? 1.5 Gbps 1 Gbps 2.5 Gbps 3 Gbps
1.5Gbs
The Super Extended Graphics Array (SXGA) display standard features: (Select 2 answers) 1024 x 768 resolution 5:4 aspect ratio 1280 x 1024 resolution 16:10 aspect ratio 1920 x 1200 resolution 4:3 aspect ratio
1280 x 1024 resolution 5:4 aspect ratio
The SATA standard specifies a power connector consisting of: 7 pins 34 pins 40 pins 15 pins
15 pins
The optional 8-pin PCIe power connector increases the power consumption limit for connected device to: 75 W 150 W 25 W 125 W
150 W
Which of the answers listed below refer to the Widescreen Ultra Extended Graphics Array (WUXGA) display standard (Select 2 answers) 16:10 aspect ratio 1600 x 1200 resolution 4:3 aspect ratio 1024 x 768 resolution 4:3 aspect ratio 1920 x 1200 resolution
16:10 aspect ratio 1920 x 1200 resolution
Which of the following answers refers to the standard display format for HDTV? 4:3 aspect ratio 5:4 aspect ratio 16:9 aspect ratio 16:10 aspect ratio
16:9 aspect ratio
Thunderbolt v1 supports data transfer rates of: (Select 2 answers) 15 Gbps per channel 20 Gbps (total bandwidth) 10 Gbps per channel 40 Gbps (total bandwidth) 20 Gbps per channel 30 Gbps (total bandwidth)
20 Gbps (total bandwidth) 10 Gbps per channel
Thunderbolt v2 allows for combining two physical channels into a single logical channel which results in a maximum available throughput of up to: 10 Gbps 20 Gbps 30 Gbps 40 Gbps
20 Gbs
ATX PSU connectors providing main power to the PC motherboard consist of: (Select 2 answers) 14 pins 20 pins 22 pins 24 pins 28 pins
20 pins 24 pins
What is the maximum data transfer rate supported by the SATA 2.0 standard? 480 Mbps 3 Gbps 800 Mbps 6 Gbps
3 Gbs
Which of the following answers lists the maximum allowable length for Thunderbolt copper cabling? 3 meters 4.5 meters 5 meters 10 meters
3 meters
Cable length for FireWire devices is limited to: 18 inches 2 meters 4.5 meters 5 meters
4.5 Meters
Which of the auxiliary PC connectors is used for supplying dedicated power to the CPU? 4/8-pin 12v P1 PCIe 6/8-pin T568B
4/8-pin 12v
Thunderbolt v3 increases the bandwidth offered by its predecessors to: 10 Gbps 20 Gbps 30 Gbps 40 Gbps
40 Gbs
What are the characteristic features of the Ultra Extended Graphics Array (UXGA) display standard? (Select 2 answers) 16:10 aspect ratio 1920 x 1200 resolution 5:4 aspect ratio 1280 x 1024 resolution 4:3 aspect ratio 1600 x 1200 resolution
4:3 aspect ratio 1600 x 1200 resolution
Which of the answers listed below refer to the characteristics of the Extended Graphics Array (XGA) display standard? (Select 2 answers) 4:3 aspect ratio 1280 x 1024 resolution 16:10 aspect ratio 1024 x 768 resolution 5:4 aspect ratio 1920 x 1200 resolution
4:3 aspect ratio 1024 x 768 resolution
Which of the answers listed below refer to the characteristics of the Extended Graphics Array (XGA) display standard? (Select 2 answers) 4:3 aspect ratio 1280 x 1024 resolution 16:10 aspect ratio 1024 x 768 resolution 5:4 aspect ratio 1920 x 1200 resolution
4:3 aspect ratio 1024 x 768 resolution
A single IEEE 1394 host controller can support up to: 255 devices 127 devices 15 devices 63 devices
63 Devices
The SATA standard defines data cable connector consisting of: 40 pins 34 pins 15 pins 7 pins
7 pins
A dim display on a laptop LCD screen might indicate a problem related to: (Select 2 answers) a. Stuck pixels b. Backlight c. Dead pixels d. Incorrect color patterns e. Inverter
Backlight Inverter
A permanent computer display screen discoloration caused by displaying the same static image for extended periods of time is known as: a. Artifact b. Stuck pixel c. Burn-in d. Dead pixel
Burn-In
Which of the acronyms listed below refers to an LCD panel taking advantage of fluorescent lamps? LED CCFL DFS OLED
CCFL
Examples of devices posing risk to electrical safety due to accumulated high voltage include: (Select all that apply) CRTs Power supplies Inverters CPUs Laser printers
CRTs Power Supplies Inverters Laser Printers
Which step of the laser printer imaging process requires troubleshooting if a printer produces ghost images on output pages? Charging Fusing Exposing Developing Cleaning
Cleaning
Which of the acronyms listed below refers to the type of electric current supplied to most of the internal PC components? AC PFC DC A/V
DC
Which of the Digital Visual Interface (DVI) connector types does not provide support for digital signal transmission? DVI-D DVI-A DVI-I DVI-A/D
DVI-A
Which of the Digital Visual Interface (DVI) connector types does not provide support for analog signal transmission? DVI-D DVI-A DVI-I DVI-A/D
DVI-D
In laser printing, long vertical streaks on each output page indicate a problem related to: a. Printer calibration b. Damage to the imaging drum c. Printer driver d. Clogged print head nozzles
Damage to the imaging drum
Which of the following answers describes(s) the characteristic features of S/PDIF? (Select all that apply) Twisted-pair cabling Digital audio interface Coaxial cabling Video interface Fiber-optic cabling
Digital audio interface
Which of the answers listed below describe the characteristic features of the signal that can be carried through the HDMI connectors and cables? (Select 2 answers) Analog signal Video only Digital signal Audio only Video and audio
Digital signal Video and audio
Which of the symptoms listed below would indicate a depleted toner cartridge as the source of a printing problem? (Select all that apply) a. Faded printouts b. Garbled characters on printer output pages c. Ghost images d. Printing blank pages e. Vertical streaks on each output page
Faded Printouts Printing Blank Pages
Disk Defragmenter is a software tool used for rearranging data on magnetic drives in order to improve system performance. Defragmentation results in faster read/write operations of the magnetic hard drive's read/write heads as they can access the data sequentially without seeking data fragments in different areas of the disk (defragmentation consolidates data into smallest contiguous regions). True False
False
For optical connections, The IEEE 1394b standard extends the maximum allowable cable length to 100 meters. True False
False
PC Power Supply Units (PSUs) capable of operating with either 110-120 or 220-240 volt power input ranges are referred to as dual rail PSUs. True False
False
Similarly to magnetic drives, Solid State-Drives (SSDs) require periodic defragmentation in order to improve system performance. True False
False
Which of the following statements refer(s) to the IEEE 1394a standard? (Select all that apply) Data transfer rate of up to 800 Mbps FireWire 400 Data transfer rate of up to 480 Mbps FireWire 800 Data transfer rate of up to 400 Mbps Parallel bus interface standard
FireWire 400 Data transfer rate of up to 400 Mbps
Which of the following statements refer(s) to the IEEE 1394b standard? (Select all that apply) Data transfer rate of up to 400 Mbps FireWire 800 Parallel bus interface standard FireWire 400 Data transfer rate of up to 480 Mbps Data transfer rate of up to 800 Mbps
FireWire 800 Data transfer rate of up to 800 Mbps
A computer on a network where most functions are carried out on a central server, or a software application that uses client-server model wherein the server performs all the processing is commonly referred to as: High-end video Gigabit NIC Multicore processor HDD RAID setup Specialized audio
Gigabit NIC HDD RAID setup
Examples of interfaces providing the capability for transmission of both video and audio data include: (Select all that apply) S/PDIF DVI S-Video VGA HDMI
HDMI
Which of the following interfaces takes advantage of the 19-pin Type A connector? USB Thunderbolt FireWire DisplayPort HDMI
HDMI
What are the characteristic features of the In-Plane Switching (IPS) LCD panel technology? (Select 3 answers) High color quality Fast response times Wide viewing angles Low color quality Slow response times Low viewing angles
High quality color slow response times wide viewing angles
Which of the hardware requirements listed below should be given priority while assembling a custom graphic/CAD/CAM design workstation? (Select 3 answers) High-end GPU Multicore CPU High-end cooling Maximum amount of RAM High-capacity HDD Dual monitors
High-end GPU Multicore CPU Maximum amount of RAM
What type of unit is used to describe the refresh rate of a computer screen? Hz cd/m2 MHz Lumen KHz
Hz
A Linux command-line utility used for displaying and modifying network interface configuration settings is called: a. IFCONFIG b. NET CONFIG c. IPCONFIG d. NETWORKSETUP
IFCONFIG
Which of the Windows Command Prompt tools listed below allows to display IP addresses, subnet mask, and default gateway for all adapters? a. NETSTAT b. IFCONFIG c. TRACERT d. IPCONFIG
IPCONFIG
Which of the LCD technologies listed below offers the fastest response time? Twisted Nematic (TN) Cathode Ray Tube (CRT) Ultra Extended Graphics Array (UXGA) In-Plane Switching (IPS)
In-Plane Switching
When a computer monitor is unable to display image on the screen, the most common causes (and the easiest ones to fix) for this problem include: (Select 2 answers) a. Inverter failure b. Loose cable connections c. Bad LCD display d. Wrong input selection e. Backlight failure
Loose cable connections Wrong input selection
Which of the following answers describe the features of the Twisted Nematic (TN) LCD panel technology? (Select 3 answers) Low viewing angles ( Your answer) Fast response times Low color quality ( Your answer) High color quality Slow response times ( Your answer) Wide viewing angles
Low viewing angles Fast response times Slow response times
Which of the following units is used for measuring the brightness of an image rendered by an image projector? dB cd/m2 Lumen Hz
Lumen
A set of printer replacement parts is commonly referred to as: Spare kit Field Replaceable Unit (FRU) Maintenance kit Standard technician toolkit
Maintenance Kit
For best performance, a custom workstation designed for virtualization tasks requires: (Select 2 answers) High-capacity HDD Maximum amount of RAM Specialized GPU High-end cooling Multicore CPU
Maximum amount of RAM Multicore CPU
Which of the following hardware requirements should be given priority while building a PC designed for computer gaming? (Select all that apply) Dual monitors Multicore CPU High-capacity fast HDD Specialized GPU High-end cooling High definition sound card
Multicore CPU Specialized GPU High-end cooling
Which of the following answers lists a Windows command-line utility designed to be of help in troubleshooting NetBIOS name resolution problems? a. NETSTAT b. NSLOOKUP c. NBTSTAT d. TRACEROUTE
NBTSTAT
What is the name of a command-line utility in MS Windows that allows for displaying protocol statistics and current TCP/IP network connections? a. TRACERT b. TRACEROUTE c. NETSTAT d. NSLOOKUP
NETSTAT
The following Windows command-line command can be used to display a list of domains, computers, or shared resources available on a specific computer. NET VIEW REG NETSTAT VIEW
NETVIEW
Which of the network administration command-line tools listed below is used for DNS queries? TRACERT NSLOOKUP NETSTAT PATHPING
NSLOOKUP
Which of the acronyms listed below refers to a new type of thin and lightweight display devices offering higher contrast ratio and color quality in comparison to LCD without the need for a special light source to produce a visible image? OLED LED HDMI HTPC
OLED
Which of the following connectors would be used to increase the power consumption limit for a high-end graphics card? T568A 15-pin VGA PCIe 6/8-pin 4/8-pin 12v
PCIe 6/8-Pin
Which of the following command-line utilities allows to test the reachability of a host across an IP network? a. NETSTAT b.IPCONFIG c. TRACERT e. PING
PING
A software that temporarily stores print jobs on the computer hard disk or in memory until the printer is ready to print them is called: Feed assembly Print spooler Task Scheduler Task Manager
Print Spooler
Garbled characters on output pages would indicate a printing problem related to: Calibration Printer driver Fuser assembly Imaging drum
Printer Driver
"Phono connector", "Cinch connector", and "A/V jack" are terms that refer to a popular type of electrical connector commonly used to carry analog/digital audio and analog video signals. This type of connector is formally known as the: DVI connector RCA connector VGA connector RJ-45 connector
RCA connector
Which of the following answers list(s) examples of wireless connectivity media? (Select all that apply) RF HDMI IEEE 802.3 IR NFC Bluetooth
RF NFC Bluetooth
Which of the connector types listed below plugs into a port of an Ethernet NIC? DB15 S/PDIF RCA RJ-45
RJ-45
Which of the following connector types are used with twisted-pair copper cabling? (Select all that apply) ST RJ-45 RG-6 RJ-11 F-connector BNC RG-59
RJ-45 RJ-11
In computer graphics, the frequency at which the screen is redrawn is called: Aspect ratio Interlacing Refresh rate Screen resolution
Refresh Rate
Examples of connector types used for carrying audio signals include: (Select all that apply) TRS connector DVI-A connector RCA connector VGA connector S/PDIF connector
S/PDIF connector TRS connector RCA connector
A type of memory module form factor most commonly used for extending the capacity of primary storage in laptop computers is called: SO-DIMM SRAM MicroDIMM RDIMM
SO-DIMM
What type of hardware components would be the most important for an A/V editing workstation? (Select all that apply) Maximum amount of RAM Specialized sound card Dual monitors Specialized GPU Multicore CPU High-capacity fast HDD
Specialized sound card Dual monitors High-capacity fast HDD
Microsoft Windows OS command-line command for displaying intermediary points on the packet route is called: a. TRACERT b. ROUTE PRINT c. TRACEROUTE d. NETSTAT
TRACERT
What type of hardware components would be the most important for a custom Home Theater PC (HTPC)? (Select all that apply) TV tuner Surround sound audio HDMI output Motherboard form factor Specialized GPU Multicore CPU
TV Tuner Surround Sound audio HDMI output Motherboard form factor
Which of the answers listed below refers to the Video Graphics Array (VGA) connector? PCIe 6/8-pin connector Three-row 15-pin connector Two-row 40-pin connector Three-row 29-pin connector
Three-row 15-pin connector
Which of the following tools would be the most appropriate to clean the inside of a laser printer? (Select all that apply) Toner vacuum Can of compressed air Regular vacuum Cleaning brush
Toner Vacuum
A tiny spot on an LCD monitor display screen that permanently remains black when it should be activated and displaying color is commonly referred to as stuck pixel. True False
True
APIPA-assigned addresses are valid only for communications within a network segment that a given host is connected to. A host with APIPA-assigned address (i.e. an IP address in the range between 169.254.0.1 and 169.254.255.254) cannot connect to the Internet. The assignment of such address, which can be checked with the IPCONFIG command-line utility, typically indicates a DHCP-related problem. True False
True
PC Power Supply Units (PSUs) may accept an AC current of 110-120 volts (standard AC current in the United States and Canada) or 220-240 volts (European AC standard). A PSU might have either a manual selector switch on the back of the device for adjusting the supplied voltage (these types of PSUs are referred to as fixed-input devices), or automatically adapt to the supplied AC voltage (auto-switching PSUs). True False
True
The DVI-I connector type provides support for both digital and analog video signal transmission. True False
True
The optional 6-pin PCIe connector increases the maximum allowable power consumption of a PCIe card by additional 75 Watts. True False
True
Connector types used with Thunderbolt devices include: (Select 2 answers) USB Type-A DVI-A Mini DisplayPort (MDP) USB Type-B VGA connector USB Type-C
USB Type-C
A single Serial ATA (SATA) data cable can be used to connect a motherboard slot with: Up to 3 devices Up to 2 devices Only 1 device Up to 4 devices
Up to 3 devices
Which of the following steps would ensure the proper re-assembly of a serviced laptop? (Select all that apply) a. Usage of appropriate hand tools b. Documenting and labeling cable and screw locations c. Magnetic mat/separate containers used for holding disassembled parts d. Removing dust buildup inside the laptop case e. Manufacturer documentation used as a reference
Usage of appropriate hand tools Documenting and labeling cable and screw locations Magnetic mat/separate containers used for holding disassembled parts Removing dust buildup inside the laptop case Manufacturer documentation used as a reference
Which of the following answers describe the function of a power inverter? (Select 2 answers) Converts AC power into DC power Used for supplying voltage to backlights of an LCD panel Converts DC power into AC power Used for supplying voltage to backlights of an OLED display
Used for supplying voltage to backlights of an LCD panel Converts DC power into AC power
What are the characteristic features of the RJ-45 connector? (Select 2 answers) Used with telephone cabling Coaxial cabling connector Used with Ethernet network cabling Copper cabling connector Fiber-optic cabling connector
Used with ethernet network cabling copper cabling connector
What are the characteristic features of the RJ-11 connector? (Select 2 answers) Used with telephone cabling Copper cabling connector Used with Ethernet network cabling Fiber-optic cabling connector Coaxial cabling connector
Used with telephone cabling Copper cabling connector
"DB-15", "DE-15", and "HD-15" are terms referring to the different variants of the: RJ-45 connector BNC connector VGA connector 8P8C connector
VGA connector
Which of the following answers list the characteristic features of the signal that can be carried through the VGA connectors and cables? (Select 2 answers) Video and audio Audio Video only Digital and analog Analog only
Video only Analog
A single copper-based Thunderbolt cable provides the capability for a simultaneous transfer of: (Select all that apply) Data from connected PCI Express (PCIe) devices DC power Data from connected DisplayPort devices AC power
data from connected display port
Which of the following countermeasures prevents shoulder surfing? Cable locks Video surveillance Privacy filters Security guards Screensavers
privacy filter
Display devices with aspect ratios of 16:10 and 16:9 are commonly referred to as: UXGA displays Fullscreen displays Widescreen displays WUXGA displays
widescreen displays
The 15-pin ATX PSU SATA power connector supplies electrical power at the voltage(s) of: (Select all that apply) +3 V +3.3 V +4 V +5 V +12 V
+3.3 V +5 V
What is the maximum data transfer rate supported by the SATA 3.0 standard? 6 Gbps 800 Mbps 3 Gbps 480 Mbps
6 Gbps
Which types of standard FireWire connectors have the capability of supplying voltage to a device? (Select 2 answers) 2-pin connector 4-pin connector 6-pin connector 8-pin connector 9-pin connector
6-pin connector 9-pin connector
What is the maximum length of a fiber-optic Thunderbolt cable? 30 meters 40 meters 50 meters 60 meters
60 meters
Which of the following statements are true? (Select all that apply) A digital image displayed on the graphics monitor screen consists of pixels arranged in rows and columns The term "screen resolution" refers to the maximum number of pixels in each dimension (horizontal and vertical) that can be addressed by a digital display device In order to ensure the sharpest text and image displayed by a CRT monitor it is usually recommended to set the monitor to run only at a specific resolution (which is also referred to as the CRT's native resolution) The term "screen resolution" refers to the relative horizontal and vertical size of a digital image displayed on the graphics monitor screen The smallest unit of a digital image represented on the digital display device is known as pixel In order to ensure the sharpest text and image displayed by a LCD monitor it is usually recommended to set the monitor to run only at a specific resolution (which is also referred to as the LCD's native resolution)
A digital image displayed on the graphics monitor screen consists of pixels arranged in rows and columns The term "screen resolution" refers to the maximum number of pixels in each dimension (horizontal and vertical) that can be addressed by a digital display device In order to ensure the sharpest text and image displayed by a CRT monitor it is usually recommended to set the monitor to run only at a specific resolution (which is also referred to as the CRT's native resolution) The smallest unit of a digital image represented on the digital display device is known as pixel In order to ensure the sharpest text and image displayed by a LCD monitor it is usually recommended to set the monitor to run only at a specific resolution (which is also referred to as the LCD's native resolution)
Which of the actions listed below should be of help while troubleshooting non-responsive touchscreen of a mobile device? a. Reseating the device's battery b. Erasing all content/settings and restoring the device to factory defaults (factory reset/hard reset) c. Pressing a specific key combination/button to perform system restart (soft reset) d. Removing screen protector and cleaning the screen e. All of the above
All of the above
