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CompTIA A+ 220 - CET1179 > Module 3 Quizzes > Flashcards

Module 3 Quizzes Flashcards

1
Q

What centrally conncests wireless network nodes in the same way that a hub connects wired Ethernet PCs?

A

Wireless Access Point (WAP)

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2
Q

How many bits are in an IPv4 address?

A

32-bit

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3
Q

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

A

255..0.0.0

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4
Q

At what frequency range do the 802.11b- and 802.11g-based wireless technologies operate?

A

2,4GHz

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5
Q

How many bits does WEP encryption use to scramble data packets?

A

40

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6
Q

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

A

Default gateway

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7
Q

If you use the _______ switch, ping continuously sends ping packets until you stip it with a break command.

A

-t

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8
Q

What identifies a machine on a network?

A

IP Address

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9
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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10
Q

What enables you to connect to the internet through a network arare smartphone, tablet or other mobile device?

A

Cellular wireless network

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11
Q

Most WAPs support filtering, in which data packets that do not contain the appropriate address are rejected. What kind of address is filtered?

A

MAC

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12
Q

What device connects a LAN’s witch to the next network?

A

Router

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13
Q

How many host IDs does a /20 network support?

A

4094 (2^12 -2)

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14
Q

How many bits are in an IPv6 address?

A

128

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15
Q

What instrument measures the impedance of a cable?

A

Time-domain reflectometer

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16
Q

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

A

5 GHz

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17
Q

What 802.11n feature increases its range and speed?

A

MIMO

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18
Q

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

A

255.255.255.0

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19
Q

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

A

WPA/WPA2-Enterprise

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20
Q

What command allows you to quickly view a network?

A

Net

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21
Q

Under the class system, how many host IDs were available in a Class B network?

A

65534 (2^16-2)

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22
Q

In the IPv6 address 2002::3210:800:200C:CF:1234, how many groups of four zeros does the “::” notation represent?

A

2

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23
Q

After entering IPCONFIG at a command prompt, you notice 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 assigned one of these addresses?

A

The DHCP server is down.

24
Q

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

A

Channel and frequency

25
Q

A workgroup shares folder over the network. What does a Homegroup share?

A

Libraries

26
Q

What command would you use to map a share to a drive letter on a computer?

A

Net use

27
Q

What command displays a computer’s network settings?

A

Ipconfig

28
Q

The IPv6 address FE80:12C7:388B:CF:7114 represents what type of address?

A

Link-local

29
Q

A(n) _________ is a network organization that centralizes user accounts, passwords, and access to resources.

A

Domain

30
Q

What frequencies does 802.11n use?

A

2.4 and 5 GHz

31
Q

Like 802.11g, _________ WAPs can run in the 2.4 GHz ISM band, supporting earlier, slower 802.11b/g devices.

A

802.11n

32
Q

Devices such as __________ and ___________ also use the 2.4-GHz frequency and can cause a great deal of interference.

A

Cordless phones, microwaves

33
Q

Antennas and the signals that they transmit have an electromagnetic property called ________.

A

Polarization

34
Q

Communication through infrared devices is implemented via the ________ protocol.

A

Infrared Data Association

35
Q

Linux, macOS, and Windows fully supports the IEEE __________ standard, more commonly known as Wi-Fi __________ Access 2, to lock down wireless networks.

A

802.11i, Wi-Fi Protected

36
Q

A(n) ___________ enables you to connect to the Internet through a network-aware smartphone, tablet or other mobile device.

A

Cellular wireless network

37
Q

Originally, DNS names all ended with one of seven domain name qualifiers, called _______.

A

Top-level domains

TLDs

38
Q

Moving and copying folders and files within network shares and between network shares and local computers doesn’t affect the file __________.

A

Attributes

39
Q

Network techs use a device called a(n) ___________ for help in traching cables.

A

Toner

40
Q

An IPv6 address that begins FE80:: is a(n) ________ address.

A

Link-local

41
Q

An antenna strenthens and focuses the radio frequency (RF) output from a WAP. The ratio of increase called ______ is measured in decibels (dB).

A

Gain

42
Q

A powerful command line program that enables you to determine the information on a DNS server is ___________.

A

Nslookup

43
Q

Changing the default ____________ for a WAP is the first step in seeting up a new wireless network.

A

SSID

44
Q

A service area that is extentded by adding WAPs is called a(n) __________.

A

EBSS

Extended Basic Service Set

45
Q

A(n) ____________ enables Ethernet network communication using IrDA.

A

Infrared access point

46
Q

All modern NICs operate in ___________ mode, meaning they can send and receive data at the same time.

A

Full duplex

47
Q

IrDA links are direct ____________ and are susceptible to interference.

A

Line-of-sight

48
Q

NIC LEDs, also known as ____________, provide clues about what’s happening with your network connection.

A

Link lights

49
Q

In a TCP/IP network, the ____________ is used to block out the network portion of an IP address.

A

Subnet mask

50
Q

Communication will fail if the encryption level, key, and ____________ do not match on the wireless client node.

A

Password

51
Q

CIDR stands for ___________.

A

Classless Inter-Domain Routing

52
Q

Machines that connect LANs are called _________

A

Routers

53
Q

A(n) _____________ sends data out of the NIC and checks to see if it comes back.

A

Loopback test

54
Q

::1 is the IPv6 ___________.

A

Loopback address

55
Q

Infrared is designed to make a point-to-point connection between two devices only in __________ mode.

A

Ad hoc

CompTIA A+ 220 - CET1179 (8 decks)

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