A+exam3

Question 1

Which of the following are connectors used with optical cables? (Choose all that apply.)

Answer 1

ST-straight tip
SC-subscriber connector
LC-Lucent connector

Question 2

Which of the following are connectors used with copper cables? (Choose all that apply.)

Answer 2

RJ-11
F type

Question 3

Which is a reason you should recycle button cell batteries?

Answer 3

A button cell batteries contain mercury metals

Question 4

Lithium-ion batteries are?

Answer 4

susceptible to thermal takeoff, which can cause fires

Question 5

Your company has decided to host its own web server. With that decision, how many DNS server(s) is the company expected to maintain?

Answer 5

two

Question 6

Which statement will load a JavaScript variable mvar with a value of 8?

Answer 6

mvar = 8;

Question 7

Which statement will load a Powershell variable mvar with a value of 8?

Answer 7

$mvar = 8

Question 8

Which statement will load a Bash variable mvar with a value of 8?

Answer 8

mvar = 8

Question 9

Which statement will load a Windows batch script variable mvar with a value of 8?

Answer 9

/ a mvar=8

Question 10

Which command can be used to map a network drive to a volume letter?

Answer 10

net use

Question 11

The netstat tool will show you what?

Answer 11

network statistics and network connections

Question 12

The nslookup tool will you allow you to verify what?

Answer 12

DNS

Question 13

The tracert tool will show you what?

Answer 13

Path network traffic will take

Question 14

What should be periodically done with mechanical hard drives to speed up performance when launching and saving files?

Answer 14

Defragment

Question 15

Trim

Answer 15

a feature used with SSD drives
where the OS notifies the
SSD Device that data blocks have been freed up.

Question 16

___________________ is the type of media access method used by NICs that listen to or sense the cable to check for traffic and send only when they hear that no one else is transmitting.

Answer 16

Carrier Sense Multiple Access with Collision Detection (CSMA/CD)

Question 17

T568A/T568B

Answer 17

twisted pair wiring standards

Question 18

Your network is running IPv4. Which of the configuration options are mandatory for your host to communicate on the network? (Choose two.)

Answer 18

IP address
Subnet mask

Question 19

If you are not connecting to another network, you do need a what?

Answer 19

Default gateway
DNS hostnames to IP addresses

Question 20

A user reports that their laptop has a number of places on the display that do not light up, even when the screen should be entirely white. What is the most likely cause of this problem?

Answer 20

Dead pixels
soulation:replace the display unit

Question 21

Burn-in or artifacts are when what?

Answer 21

when other dim images show up on the computer along with intended image

Question 22

Distorted images look like what?

Answer 22

pulled or stretched

Question 23

Your laser printer has recently starting printing vertical white lines on documents it prints. What is the most likely cause of the problem?

Answer 23

There is toner on the transfer corona wire

Question 24

Your laser printer has recently starting printing vertical black lines on documents it prints. What is the most likely cause of the problem?

Answer 24

scratch or a groove in the EP drm

Question 25

If toner does not bond to the paper what is the cause of it?

Answer 25

fuser was not heating properly

Question 26

Faulty print drivers will cause what?

Answer 26

garbage to print or there will be no printing at all

Question 27

Besides 802.11 standards, which wireless communication methods may also work in the 2.4 GHz range? (Choose all that apply.)

Answer 27

Bluetooth
Long-range fixed wireless

Question 28

5G cellular mmwave is between what frequencies. ?

Answer 28

24 GHz
86GHz

Question 29

NFC uses what frequency

Answer 29

13.56MHz

Question 30

You are replacing a laptop display. Which of the following components is least likely to be found in the laptop display?

Answer 30

DC jack

Question 31

DC jack

Answer 31

DC power source found in cars and airplanes