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CompTIA A+ 220 - CET1179 > Midterm Study Guide > Flashcards

Midterm Study Guide Flashcards

1
Q

Network technologies that use ______ light use single mode fiber optic cable in.

A

Laser

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2
Q

A file not within a subfolder is said to be in the _____.

A

Root directory

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3
Q

An application particularly relies on which type of files?

A

DLL

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4
Q

The ______ command at the bash or terminal shell enables you to terminate running programs in Linux or macOS, just like the tools in Command or PowerShell.

A

Kill

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5
Q

How wide are all equipment racks?

A

19 inches

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6
Q

What command allows you to quickly view a network?

A

Net

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7
Q

The term virtual desktop commonly refers to the multiple desktop environments you can access in modern operating systems, such as clicking the ____ in windows 10 and going to a second desktop.

A

Task view icon

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8
Q

What feature enables you to copy a file that is in use?

A

Volume shadow copy service

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9
Q

Digital equipment, Intel, and the Xerox invented the first network in the mid-1970s and created what eventually became ______.

A

Ethernet

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10
Q

Higher end monitors are capable of ____ color, meaning the monitor can display ____color variations per channel.

A

10 bit, 1024

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11
Q

What instrument measures the impedance of cable?

A

Time domain reflectometer

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12
Q

Most fiber ethernet networks use ____ multimode fiber optic cable.

A

62.5/125

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13
Q

IPv4 addresses in the range 169.254.0.1 to 169.254.255.254 represent which feature?

A

Automatic private IP addressing

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14
Q

How many physical lines does the basic rate interface set up use?

A

1

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15
Q

The 10BaseT and 100BaseT standards require ____ pairs of wire.

A

Two

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16
Q

A device that goes into a 7 inch space is called a ____.

A

4U

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17
Q

How many bits are in an IPv6 address?

A

128

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18
Q

The action center is found in which version of windows?

A

Windows 7, windows 8, windows 8.1

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19
Q

At what frequency range does the 802.11a based technology operate?

A

5 GHz

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20
Q

System protection falls under the category of ____ software.

A

File recovery

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21
Q

A LAN is almost always a _____.

A

Broadcast domain

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22
Q

What WAP settings should be adjusted in an environment with overlapping Wi-Fi signals?

A

Channel and frequency

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23
Q

Cloud file storage services, like Dropbox and Box allow people to move to the cloud for some of their storage needs. These services include ____ with their desktop version, so that you can easily have the same version of every file in multiple places, (desktop laptop online).

A

Synchronization apps

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24
Q

Many computers can share a smaller pool of routable IP addresses with ____.

A

DNAT

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25
Q

Early LCD backlights use ______ technology, popular for its low power use, even brightness and long life.

A

Cold cathode fluorescent lamp

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26
Q

A ____ is the amount of light given off by a light source from a certain angle that is perceived by the human eye.

A

Lumen

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27
Q

Network people called anything that one computer might share with another a ____.

A

Resource

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28
Q

What enables you to connect to the Internet through a network aware smart phone, tablet, or other mobile device?

A

Cellular wireless network

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29
Q

What is another term for a snapshot?

A

Checkpoint

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30
Q

The standard copy/move commands can work on only one _____ at a time.

A

Directory

31
Q

If you hear a hissing sound coming from the LCD, which component is most likely about to fail?

A

Inverter

32
Q

The IP address on the LAN side of a router is called the ____.

A

Default gateway

33
Q

What are the two critical boot files that risk corruption in windows?

A

Bootmgr and bcd

34
Q

The integrated services digital Netwerk or ISDN send a telephone transmission across what type of lines?

A

Digital

35
Q

Windows command switch is expressed by using which character?

A

/

36
Q

After entering IP config at a command prompt, you notice that you are using an IP address in the 169.254.0.1 to 169.254.255.254 address range. What is most likely explanation for being a signed one of these addresses?

A

The DHCP server is down.

37
Q

Consolidating a System’s physical in time resources is known as _____.

A

Resource pooling

38
Q

At what frequency range do the 802.11B & 802.11G based wireless technologies operate

A

2.4 GHz

39
Q

Under the class system, what was the default subnet mask of class C addresses?

A

255.255.255.0

40
Q

Most WAP’s support filtering, in which data packets that do not contain the appropriate address or rejected. What kind of address is filtered?

A

MAC

41
Q

At what frequency range does the 802.11a base wireless technology operate?

A

5 GHz

42
Q

Some projectors use a connection technology called ____ that enables long range connectivity for uncompressed HD video and audio over CAT5 a CAT 6 network cables.

A

HDbaseT

43
Q

A physical system that runs specialized virtualization software is called a ____.

A

Host

44
Q

What frequency range do the 802.11B & 802.11G based wireless technologies operate?

A

2.4 GHz

45
Q

In older versions of windows file name was restricted to ____characters.

A

Eight

46
Q

How long is a Mac address?

A

48 bit

47
Q

Under the class system, what was the default subnet mask for class A addresses?

A

255.0.0.0

48
Q

How many bits are in an IPv4 address?

A

32

49
Q

A good patch cable should include a ___.

A

Boot

50
Q

How are Mac addresses represented?

A

Using 12 hexadecimal characters

51
Q

What company makes ESXI?

A

VMware

52
Q

Incompatibility mode which setting turns off automatic resizing of a programs windows?

A

Disable display scaling on high dpi settings

53
Q

Average LCD panels are around ____, which most monitor authorities consider excellent brightness.

A

300 nits

54
Q

How many bits does WEP encryption used to scramble data packets

A

40

55
Q

Data is moved from one PC to another in discrete chunks called _____.

A

Frames

56
Q

How do you represent the hexadecimal value A in binary?

A

1010

57
Q

A point in time back up of a virtual machine is called the _____.

A

Snapshot

58
Q

What frequencies does 802. 11N use?

A

2.4 and 5 GHz

59
Q

One nit is equivalent to.

A

One candela/M to the power of two

60
Q

1000baseT needs all ___ pairs of wires IN CAT5E and higher cables

A

Four

61
Q

What command when you used to map of Share to a drive letter on a computer?

A

Net use

62
Q

What centrally connect wireless network nodes in the same way that a hub connect wired ethernet PCs

A

WAP

63
Q

A ____ is a network organization that centralizes user accounts, passwords, and access to resources.

A

Domain

64
Q

How many host IDs does a /20 network support?

A

4094

65
Q

In macOS and Linux what is the short hand character that represents a users home directory?

A

~

66
Q

Marketed as and now generally excepted as a true 4G technology, LTE networks feature theoretical speeds of up to space bar____ download and 100 Mbps upload?

A

One gigabyte per second

67
Q

A true 3-D object is composed of a group of points called ____.

A

Vertices

68
Q

What Linux command displays the current working directory?

A

PWD

69
Q

What 802.11N feature increases its range in speed?

A

MIMO

70
Q

How many binary characters are represented by one hexadecimal character?

A

4

71
Q

Under the class system, how many host ideas were available in a class B net work?

A

65,534

72
Q

VMware’s ESXI is an example of a _____.

A

Bare metal hypervisor

73
Q

What WPA/WPA2 encryption version uses a radius server for secure authentication?

A

WPA/WPA 2 – enterprise

74
Q

What command displays a computers network settings?

A

IPconfig

CompTIA A+ 220 - CET1179 (8 decks)

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