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Compsci 108 Networking > Lesson 3 - exam > Flashcards

Lesson 3 - exam Flashcards

1
Q

Which of these is NOT true?

  • Throughput is never more than bandwidth allows
  • High latency is better than low latency
  • Accuracy of data transmission is important
  • Low latency is better than high latency
A

High latency is better than low latency

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2
Q

What does bandwidth mean?

  • Bandwidth does not apply to network speed
  • Bandwidth is the actual speed of your data
  • Bandwidth is the theoretical maximum speed of your data
  • Bandwidth is the theoretical minimum speed of your data
A

Bandwidth is the theoretical maximum speed of your data

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3
Q

What does latency mean?

  • Latency is how long it takes for the computer to boot up
  • Latency is the delay between when you request data and the time you actually receive it
  • Latency is the amount of data you get compared to how much you asked for
  • Latency is a required delay to make sure timing is fair on the network
A

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

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4
Q

Which of these statements is true?

  • You should rarely expect delays when you ask for data
  • You can expect to get just as much throughput as you ask for
  • You should expect an average throughput which is less than the maximum speed, and you should expect an average delay called latency
  • Data always travels the same speed on the network
A

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

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5
Q

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

  • To be efficient
  • To be effective
  • All answers are correct
  • To have a cost effective solution
A

All answers are correct

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6
Q

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

  • Complex
  • Half-duplex
  • Full-duplex
  • Simplex
A

Half-duplex

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7
Q

Which service would a simplex channel be ideal for?

  • A radio station
  • A broadcast on TV
  • All answers are correct
  • An online video
A

All answers are correct

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8
Q

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

  • Full-duplex
  • Half-duplex
  • Simplex
  • Complex
A

Full-duplex

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9
Q

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

  • RJ-45
  • MT-RJ
  • USB
  • SC
A

RJ-45

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10
Q

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

  • Radio waves
  • Fiber optic cable
  • Coaxial cable
  • Twisted pair cable
A

Fiber optic cable

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11
Q

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

  • Shielded twisted pair cable
  • Coaxial cable
  • Fiber optic cable
  • Unshielded twisted pair cable
A

Shielded twisted pair cable

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12
Q

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

  • Fiber LC
  • RJ-45
  • RJ-11
  • MT-RJ
A

MT-RJ

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13
Q

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

  • CAT4
  • CAT7
  • CAT5e
  • CAT5
A

CAT5e

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13
Q

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

  • Unshielded twisted pair
  • Coaxial
  • Fiber optic
  • CAT2
A

Coaxial

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13
Q

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

  • Plastic optical cable
  • Single-mode
  • None of these answer are correct
  • Multi-mode
A

Plastic optical cable

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13
Q

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

  • To double the transfer rate of data
  • To cut down on costs
  • To make installation easier
  • To reduce electromagnetic interference from outside sources
A

To reduce electromagnetic interference from outside sources

13
Q

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

  • 2500 hz
  • 4000 hz
  • 10,500 hz
  • 6500 hz
A

2500 hz

14
Q

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

  • 1000hz
  • 2000hz
  • 800hz
  • 1500hz
A

800hz

15
Q

What is the link efficiency of full duplex?

  • Less than 50%
  • Less than 25%
  • More than 50%
  • 100%
A

More than 50%

16
Q

What kind of channel does broadband transmission use?

  • Bandpass channel
  • Medium pass channel
  • Low pass channel
  • High pass channel
A

Bandpass channel

17
Q

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

  • Throughput refers to letting data through when there is a problem
  • Throughput refers to the actual speed of your data
  • Throughput refers to the theoretical speed of your data
  • Throughput refers to the lowest possible speed of your data
A

Throughput refers to the actual speed of your data

18
Q

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

  • Bandwidth
  • Theoretical speed
  • Delays
  • Throughput
A

Throughput

19
Q

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

  • Throughput is like an impatient golfer who wants to play through
  • Throughput is like a clogged artery
  • Throughput is like a clean artery
  • Throughput is like a zombie movie
A

Throughput is like a clogged artery

20
Q

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

  • Bandwidth is the actual speed of your data
  • Bandwidth is the speed of your data
  • Bandwidth is the theoretical speed of your data
  • Bandwidth is how wide your data can get
A

Bandwidth is the theoretical speed of your data

21
Q

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

  • Bandwidth equals distance squared
  • Light moves faster than an electrical signal
  • Copper cables are owned by the power companies
  • Copper cables are heavier so they’re slower
A

Light moves faster than an electrical signal

22
Q

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

  • Copper
  • Glass or Plastic
  • Aluminum
  • Resin gel
A

Glass or Plastic

23
Q

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

  • Cladding
  • Sheath
  • Strand
  • Connector
A

Cladding

24
Q

An advantage of optical fiber over traditional copper wiring is:

  • You can pull it tighter
  • Less bulk
  • Lower cost
  • It can bend at greater angles than copper
A

Less bulk

25
Q

What does throughput mean?

  • Throughput is the fastest speed your data can travel on the network
  • Throughput is the delay between the moment you demand data and the time you eventually get it
  • Throughput is the actual amount of data you get in a certain amount of time
  • Throughput is the slowest speed your data can travel on the network
A

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

26
Q

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

  • Full-duplex
  • None of these are correct
  • Simplex
  • Half-duplex
A

Full-duplex

27
Q

Areas of weakness

A

Transmission Basics in Networking: Media Characteristics & Connector Types
Bandwidth vs. Throughput
Throughput vs. Latency

28
Q

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

  • Single-mode
  • Serial fiber
  • Multi-mode
  • Wave-division multiplexing fiber
A

Serial fiber

29
Q

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

  • There is no advantage to using one
  • To cut back on electrical interference
  • To enhance the network connection in a small room
  • To focus the network connection in a large room
A

To cut back on electrical interference

30
Q

What is simplex mode of communication?

  • Specific sender but no specific receiver
  • Only one sender and receiver.
  • No specific sender or receiver
  • No specific sender but specific receiver
A

Only one sender and receiver

31
Q
A

Compsci 108 Networking (19 decks)

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