COMPTIA Flashcards
A helpdesk support professional is helping to set up a computer for a presentation not generally used for presentations. The helpdesk professional notices that the display connector has 15 pins. What type of cable will the computer need?
VGA
A marketing analyst is trying to connect an Apple device to a corporate PC, but the cable will not fit into the PC connections. What type of adapter should the analyst use?
USB
A service desk operator is looking at an older computer. The service desk operator attempts to plug in a keyboard and mouse, but there are no USB ports. What type of cable do the keyboard and mouse need?
DB9
A parent has purchased an older laptop for their young child to do school work but finds the laptop has USB 1.1 connections. Which of the following should the parent use to be compatible?
USB 3 Type A
An audio-visual support technician assists a customer who normally uses a USB 3.0 display cable to connect, but the cable seems to have gone bad. What else could the technician likely use?
Thunderbolt 3
A brand new network associate sets up phone lines at a new location. What type of connector will the network associate need?
RJ11
A server technician has received a non-standard external drive. It appears older since it does not connect to USB, but it is not recognized when connected. The technician suspects it needs to be powered. Which of the following should the technician try?
eSATAp
A company has tasked a network administrator with running Ethernet cabling in an enterprise and is told to use the most popular type of network cable with an insulated jacket. Which of the following should the administrator use?
UTP
An organization has asked a helpdesk attendant to swap out a defective monitor since part of the monitor will not display colors correctly. They are curious about how the LCD monitor varies the color, so they look at the inner workings. What is each pixel addressed by to vary the intensity of RGB values?
Transistor
An audio-visual support technician assists a customer who normally uses a USB 3.0 display cable to connect, but the cable seems to have gone bad. What else could the technician likely use?
Thunderbolt 3
A help desk analyst is replacing an internal hard drive on a desktop. A technician had previously removed the hard drive, so the analyst did not have a chance to map which cable should go where. Which cable will provide power in a modern SATA setup?
15 PIN
WHAT IS CAT 5
Cat 5 is a type of twisted pair cable that carries signals for computer networks such as Ethernet1234. It has four pairs of copper wire and RJ-45 connectors at the ends234. It supports frequencies up to 100 MHz and speeds up to 1000 Mbps135. It can be used for various network technologies, such as 10BASE-T, 100BASE-TX, 1000BASE-T,
What is CAT5e
Cat 5e is a twisted pair cable for computer networks. It is used as a cabling infrastructure for 10BASE-T (Ethernet), full duplex 100BASE-TX (Fast Ethernet) and 1000BASE-T (Gigabit Ethernet, or GbE) networks12. The Cat 5e standard provides performance of up to 100 MHz and can be used up to a maximum length of 100 meters
What is Cat 6
Cat 6 is used mainly for computer networks reaching a Gb, 1000 Mbps or one Gbps of data transfer speed (DTR) or higher. It consists of four pairs of copper wires, which are all utilized for data transfer. It provides bandwidth of 250 MHz, speed up to 10 Gbps and may be stretched to 100 meters in length
What is IDE
old type of storage device- hard drives
What is SCSI
small computer system interface, a bus standard for connecting computers and their peripherals.
What is a R232 connector
An RS232 connector is a port that allows data to be exchanged between devices, It uses serial communication instead of parallel communication
What is SODIMM
SODIMM stands for Small Outline Dual In-line Memory Module. It is a type of computer memory module that is smaller and thinner than standard DIMM modules. It is mainly used for laptops and other small devices
What is DDR2
Computer DDR2 is a type of memory module that was released in 2003 and operates faster, uses less power, and generates less heat than DDR1. It is incompatible with DDR slots1. It can help improve the processing speed of computers for high data transmission performance23. It uses 240PIN to achieve high anti-interference and anti-static performance3. It supports plug and play without driver
What is DDR3
is a type of synchronous dynamic random-access memory (SDRAM) with a high bandwidth interface, DDR3 SDRAM is neither forward nor backward compatible with any earlier type of random-access memory (RAM) because of different signaling voltages, timings, and other factors.
What is DDR4
s a type of synchronous dynamic random-access memory with a high bandwidth interface.
What is Single Channel Ram
Single-channel RAM is a type of memory configuration where your CPU has access to a single 64-bit wide bus (in DDR4) to access memory. It is usually of 64-bits and is like a single “lane” for the RAM to transfer data. The bandwidth on single-channel memory is lower than dual-channel memory
What is Dual Channel Ram
Dual-channel RAM is a technology that uses two memory channels to increase the rate of transfer between your computer’s memory and the CPU. In dual-channel mode, two RAM sticks communicate simultaneously on separate channels to operate your computer and run programs significantly faster. Therefore, running in dual-channel memory will provide a significant performance boost to your PC, regardless of the actual size of your RAM. For example, in most cases, two 4GB sticks of memory running in dual-channel mode will likely outperform a single 8GB stick of memory in single-channel mode
What is Tripple Channel Ram
Triple-channel RAM is a type of memory architecture that uses three identical memory modules to increase the communication speed between the memory controller and the RAM. This technique is used to triple the communication speed between the memory controller and the RAM, thus increasing the system performance1. Triple-channel mode is enabled when identical matched memory modules are installed in each of the three blue memory slots
What is ECC
Error correcting codes are used for controlling errors in data transmission over unreliable or noisy communication channels
Parity vs Non Parity
Non-parity memory is memory that does not perform any kind of error checking to ensure that the data written to memory is what is actually read when it is retrieved12. Parity memory, on the other hand, is memory with extra bits that accompany the word to make the total number of bits on that word even or odd2. Both parity methods function the same way but differ in the sense of whether they look for an odd number of bits or an even number of bits
What is an Optical Drive
DVDs, CDs and Blu-ray