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A+ Certification > Module 9b > Flashcards

Module 9b Flashcards

Chapter 15

1
Q

T/F: A WLAN covers a large geographical area and is made up of many smaller networks.

A

False

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2
Q

T/F: 10Base5 cabling runs at speeds up to 1 Gbps and distances to 500 meters.

A

False

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3
Q

T/F: Phone cords are a type of twisted-pair cable and use an RJ-45 connector.

A

False

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4
Q

T/F: A punchdown tool is used to wire twisted-pair cabling to a keystone jack.

A

True

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5
Q

T/F: Switches are slowly being replaced by hubs, which are newer technology.

A

False

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6
Q

In order to terminate multiple network cables that converge in one location such as an electrical closet or server room, what should you use?

A

patch panel

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7
Q

What statement regarding satellite connections is accurate?

A

it requires line of sight connectivity

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8
Q

What version of Ethernet utilizes a fiber-optic cable and has a transmission speed of 100 Mbps?

A

100BaseFX

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9
Q

If you are experience issues reaching a target destination network, and you need to display each hop to the destination, what command should you use?

A

tracert

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10
Q

Which physical topology uses a centralized device to manage traffic on the network?

A

star bus

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11
Q

Under what circumstance might you use an Ethernet loopback plug?

A

to test a network cable

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12
Q

What is the unit of information called when a network adapter adds the source and destination MAC address to the segment of data before it is transmitted on the network?

A

frame

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13
Q

What are there twists in the wires that are used for network cabling?

A

the twists reduce crosstalk

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14
Q

If you’re looking to install Gigabit Ethernet , what cabling system would you use?

A

Cat-6

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15
Q

What statement regarding crossover cables is accurate?

A

It can be used to connect two PCs together

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16
Q

What network type covers a large campus or city?

A

MAN

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17
Q

Which of the following is true about cable Internet?

A

you share the cable infrastructure with your neighbors

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18
Q

Which statement regarding 10-Gigabit Ethernet is accurate?

A

it is a good choice for backbone networks

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19
Q

What type of network device keeps a table of the MAC addresses of the devices connected to it?

A

switch

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20
Q

What type of device do you need if you want to connect two network segments together such as a wireless network and a wired network?

A

bridge

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21
Q

What does a 1000BaseT NIC use to connect to a network cable?

A

RJ-45

22
Q

What command will display a list of active and inactive network interfaces on Unix, Linux, and Mac OS X?

A

ifconfig -a

23
Q

What cable system utilizes a fiber-optic cable?

A

1000BaseFX

24
Q

What command manages user accounts on the local system in Windows?

A

net user

25
Q

What DSL technology provides equal bandwidth in both directions?

A

SDSL

26
Q

What two terms describe the type of network cable that is used for connecting a computer to a switch or other network device?

A

straight-through cable

patch cable

27
Q

What two commands are used to display TCP/IP configuration on Windows and Unix / Linux / Mac OS X operating systems, respectively?

A

ipconfig

ifconfig

28
Q

In the T568B wiring scheme, what two color pairs are used for transmit and receive on a 100BaseT network?

A

white/green, green

white/orange, orange

29
Q

What two standards have been established for wiring twisted-pair cabling and RJ-45 connectors?

A

T568A

T568B

30
Q

What two different types of coaxial cable have been used for cable TV?

A

RG-6

RG-59

31
Q

broadband

A

a networking technology that carries more than one type of signal

32
Q

throughput

A

the average of the actual speed of a network

33
Q

ferrite clamp

A

a device that helps to eliminate electromagnetic interference (EMI)

34
Q

latency

A

delays in network transmission

35
Q

fast ethernet

A

operates at 100 Mbps and uses STP or UTP cabling, rated CAT-5 or higher

36
Q

patch cable

A

used to connect a computer to a switch or other network device

37
Q

STP

A

uses a covering or shield around wire pairs

38
Q

switch

A

a device that keeps a table of MAC addresses to port mappings

39
Q

repeater

A

a device that amplifies and retransmits signal to a wider coverage area

40
Q

DSL

A

uses ordinary copper phone lines and a range of frequencies on the copper wire to provide Internet

41
Q

What is Power over Ethernet and how might you use it?

A

a feature that might be available on high-end wired network adapters to allow power to be transmitted over Ethernet cable.

42
Q

What does the ping command do?

A

tests connectivity by sending an echo request to remote computer.

43
Q

What are the differences between a hub and a switch?

A

hub: transmits the data frame to every device that sent the frame, pass through distribution.
switch: smarter and more efficient, keeps table of MAC addresses

44
Q

What is the nslookup command, and what does it do?

A

lets you read info from the Internet namespace by requesting info about domain name resolutions from the DNS server’s zone data

45
Q

What is fiber optic cabling and what are the two types of fiber-optic cable?

A

transmit signals as pulses of light over glass/plastic inside protected tubing.
two types: single mode and multimode.

46
Q

What are some of the considerations when deciding between Internet and DSL? Describe two.

A
  1. with cable, you share infrastructure with neighbors, with DSL you use dedicated phone line.
  2. DSL static over phone line, sometimes phone lines don’t qualify
47
Q

What is the difference between bandwidth and throughput?

A

bandwidth: theoretical # of bits can be transmitted over a network at one time
throughput: average of the actual speed

48
Q

Describe a WAN and give an example of a WAN.

A

wide area network.
large geographical area and is made up of smaller networks.
example is the Internet.

49
Q

Compare a straight-through cable with a crossover cable.

A

straight-through: used to connect computer to a switch (or other network device)
crossover: used to connect two like devices.
difference is the way they transmit and receive lines.

50
Q

What considerations should be taken for Ethernet cables that are installed in plenum areas?

A

plenum cable covered with Teflon is used because it does not give off toxic fumes when burned.

A+ Certification (12 decks)

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