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Compsci 108 Networking > Lesson 3 > Flashcards

Lesson 3 Flashcards

1
Q

What is the link efficiency of full duplex?

A

more than 50%’.

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2
Q

The frequency range of a channel is 4000hz to 6500hz. What is the bandwidth?

A

2500 hz

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3
Q

What is simplex mode of communication?

A

Only one sender and receiver.

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4
Q

What kind of channel does broadband transmission use?

A

bandpass channel

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5
Q

The link efficiency of a channel is 0.2 and bandwidth is 4000hz. What is the throughput?

A

800 hz

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6
Q

Crosstalk and attenuation are NOT a problem in which of the following media?

A

Fiber optic cable

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7
Q

Which of the following media is comparatively cheaper, lighter and easier to install?

A

Twisted pair cable

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8
Q

Which is a standard connector for unshielded twisted pair cable that resembles RJ-11 telephone jacks?

A

RJ-45

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9
Q

Which of the following connectors are also used with multimode and single-mode fiber optic cables for accessing gigabit ethernet?

A

MT-RJ

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10
Q

CAT 3 and CAT 5 belong to which of the following cable categories?

A

Shielded twisted pair (STP)

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11
Q

Why is it important to know the three types of communication in networking?

A

All answers are correct

The three different channel types all have their ideal uses. It is essential to know which type to use so that you can implement a strategy that is the most efficient, effective, and affordable solution.

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12
Q

Which one of the communication channels allows for data to be sent and received in both directions, but not at the same time?

A

Half-duplex

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13
Q

Which service would a simplex channel be ideal for?

A

All answers are correct

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14
Q

Which of the communication channel types allows for information to flow in both directions at the same time?

A

Full-duplex

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15
Q

Which of the communication channel types would be the ideal choice for making a phone call?

A

Full-duplex

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16
Q

In reference to computers and the internet, what is throughput?

A

Throughput refers to the actual speed of your data

17
Q

In reference to computers and the internet, what is an appropriate analogy for throughput?

A

Throughput is like a clogged artery

18
Q

Many family members using the network connection at the same time reduces:

A

Throughput

19
Q

What does Mbps stand for?

A

megabits per second

20
Q

In reference to computers and the internet, what is bandwidth?

A

Bandwidth is the theoretical speed of your data

21
Q

What does latency mean?

A

Latency is the delay between when you request data and the time you actually receive it

22
Q

What does throughput mean?

A

Throughput is the actual amount of data you get in a certain amount of time

23
Q

Which of these is NOT true?

A

High latency is better than low latency

24
Q

What does bandwidth mean?

A

Bandwidth is the theoretical maximum speed of your data

25
Q

Which of these statements is true?

A

You should expect an average throughput which is less than the maximum speed, and you should expect an average delay called latency

26
Q

What is the main advantage of using a shielded twisted pair (STP) cable for a network connection?

A

To cut back on electrical interference

27
Q

Which of these is the most common cable type to connect a home network to a cable modem using an internet service provider?

A

Coaxial

28
Q

What is the main purpose of having a twisted pair cable?

A

To reduce electromagnetic interference from outside sources

29
Q

When internet service providers use fiber optic cables, which cable type are they most likely to use for home networks?

A

Plastic optical cable

30
Q

In unshielded twisted pair cables, which category starts being able to push gigabit network speeds (1000+ Mbps)?

A

CAT5e

31
Q

An advantage of optical fiber over traditional copper wiring is:

A

lighter, less bulky

32
Q

Optical fiber cable provides a higher transmission speed than copper wiring because:

A

Light moves faster than an electrical signal

33
Q

The core strand of an optical fiber can be made of what type of material?

A

Glass or Plastic

34
Q

The type of fiber used typically for long distance runs is:

A

single mode fiber

35
Q

What part of an optical fiber cable reflects light back into the core as the cable bends?

A

cladding

Compsci 108 Networking (19 decks)

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