Question 1

Serial transmission is transmission over a single wire pair.

Accepted Answer

A) True 
 B)False  True

Question 2

For their transmission medium,cable television companies primarily use ________.

Accepted Answer

A) 1-pair VG UTP cabling 
B) 2-pair DG UTP cabling 
C) coaxial cable 
D) fiber to the home 
A) 1-pair VG UTP cabling 
B) 2-pair DG UTP cabling 
C) coaxial cable 
D) fiber to the home C

Question 3

Modal dispersion limits transmission distance in ________.

Accepted Answer

A) multimode fiber 
B) single-mode fiber 
C) Both A and B 
D) Neither A nor B 
A) multimode fiber 
B) single-mode fiber 
C) Both A and B 
D) Neither A nor B A

Question 4

Untwisting wire pairs no more than 1.25 cm (a half inch)at their ends reduces ________.

Accepted Answer

A) interference 
B) crosstalk interference 
C) terminal crosstalk interference 
D) None of the above. 
A) interference 
B) crosstalk interference 
C) terminal crosstalk interference 
D) None of the above.

Question 5

When a signal travels,this is called ________.

Accepted Answer

A) transit 
B) end-to-end transmission 
C) propagation 
D) a propagation effect 
E) transport 
A) transit 
B) end-to-end transmission 
C) propagation 
D) a propagation effect 
E) transport

Question 6

Compared with UTP,optical fiber is ________ expensive to buy and install today.

Accepted Answer

A) less (when all costs of purchasing and installation are considered) 
B) about as 
C) more 
A) less (when all costs of purchasing and installation are considered) 
B) about as 
C) more

Question 7

Which light wavelength is the least expensive in optical fiber?

Accepted Answer

A) 50 nm. 
B) 850 nm. 
C) 1550 nm. 
D) Both A and B 
A) 50 nm. 
B) 850 nm. 
C) 1550 nm. 
D) Both A and B

Question 8

Which form of UTP can carry 10 Gbps signals 100 meters?

Accepted Answer

A) Cat 6. 
B) Cat 6A. 
C) Both A and B 
D) Neither A nor B 
A) Cat 6. 
B) Cat 6A. 
C) Both A and B 
D) Neither A nor B

Question 9

Today,the main benefit of optical fiber compared with UTP is ________.

Accepted Answer

A) rugged construction 
B) lower cost 
C) the ability to transmit signals faster 
D) the ability to span greater distances 
A) rugged construction 
B) lower cost 
C) the ability to transmit signals faster 
D) the ability to span greater distances

Question 10

Which of the following layers deals with messages?

Accepted Answer

A) The physical layer. 
B) The internet layer. 
C) Both A and B 
D) Neither A nor B 
A) The physical layer. 
B) The internet layer. 
C) Both A and B 
D) Neither A nor B

Question 11

What is a typical core diameter for multimode fiber?

Accepted Answer

A) 62.5 microns. 
B) 8.3 microns. 
C) Both A and B 
A) 62.5 microns. 
B) 8.3 microns. 
C) Both A and B

Question 12

Which type of transmission is more widely used today?

Accepted Answer

A) Serial. 
B) Parallel. 
C) Both are used about equally. 
A) Serial. 
B) Parallel. 
C) Both are used about equally.

Question 13

When one pair in a UTP cord interferes with signals in other pairs,this is ________.

Accepted Answer

A) interference 
B) crosstalk interference 
C) terminal crosstalk interference 
D) internal noise 
A) interference 
B) crosstalk interference 
C) terminal crosstalk interference 
D) internal noise

Question 14

For their transmission medium,cable television companies primarily use coaxial cable.

Accepted Answer

A) True 
 B)False

Question 15

The lowest-speed leased lines (under about 2 Mbps)use ________.

Accepted Answer

A) one-pair voice-grade UTP 
B) two-pair voice-grade UTP 
C) one-pair data-grade UTP 
D) two-pair data-grade UTP 
E) 4-pair UTP 
A) one-pair voice-grade UTP 
B) two-pair voice-grade UTP 
C) one-pair data-grade UTP 
D) two-pair data-grade UTP 
E) 4-pair UTP

Question 16

Compared with single-mode fiber,multimode fiber has ________ core.

Accepted Answer

A) a wider 
B) a narrower 
C) the same width 
A) a wider 
B) a narrower 
C) the same width

Question 17

Businesses can select multimode fiber to transmit 1000BASE-SX signals farther by ________.

Accepted Answer

A) buying fiber with lower modal bandwidth 
B) buying fiber with wider core diameter 
C) Both A and B 
D) Neither A nor B 
A) buying fiber with lower modal bandwidth 
B) buying fiber with wider core diameter 
C) Both A and B 
D) Neither A nor B

Question 18

In the UTP wiring used in LANs,how many wire pairs are there in a cord?

Accepted Answer

A) 1. 
B) 2. 
C) 4. 
D) 8. 
E) 25. 
A) 1. 
B) 2. 
C) 4. 
D) 8. 
E) 25.

Question 19

In binary signaling there is (are)________ state(s).

Accepted Answer

A) one 
B) two 
C) a few 
D) an infinite number of 
A) one 
B) two 
C) a few 
D) an infinite number of

Question 20

Which light wavelength dominates use in LAN fiber?

Accepted Answer

A) 62.5 nm. 
B) 850 nm. 
C) 1310 nm. 
D) 1550 nm. 
E) None of the above. 
A) 62.5 nm. 
B) 850 nm. 
C) 1310 nm. 
D) 1550 nm. 
E) None of the above.

Serial transmission is transmission over a single wire pair.

For their transmission medium,cable television companies primarily use ________.

Modal dispersion limits transmission distance in ________.

Untwisting wire pairs no more than 1.25 cm (a half inch)at their ends reduces ________.

When a signal travels,this is called ________.

Compared with UTP,optical fiber is ________ expensive to buy and install today.

Which light wavelength is the least expensive in optical fiber?

Which form of UTP can carry 10 Gbps signals 100 meters?

Today,the main benefit of optical fiber compared with UTP is ________.

Which of the following layers deals with messages?

What is a typical core diameter for multimode fiber?

Which type of transmission is more widely used today?

When one pair in a UTP cord interferes with signals in other pairs,this is ________.

For their transmission medium,cable television companies primarily use coaxial cable.

The lowest-speed leased lines (under about 2 Mbps)use ________.

Compared with single-mode fiber,multimode fiber has ________ core.

Businesses can select multimode fiber to transmit 1000BASE-SX signals farther by ________.

In the UTP wiring used in LANs,how many wire pairs are there in a cord?

In binary signaling there is (are)________ state(s).

Which light wavelength dominates use in LAN fiber?

Networking: How We Got Here

Network Standards

Network Security

Network Management

Switched Wired Networks

Wireless Networks I

Wireless Networks 2

Tcp-Ip Internetworking

Internetworking 2

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Exam 5: Physical Layer Propagation

Serial transmission is transmission over a single wire pair.

For their transmission medium,cable television companies primarily use ________.

Modal dispersion limits transmission distance in ________.

Untwisting wire pairs no more than 1.25 cm (a half inch)at their ends reduces ________.

When a signal travels,this is called ________.

Compared with UTP,optical fiber is ________ expensive to buy and install today.

Which light wavelength is the least expensive in optical fiber?

Which form of UTP can carry 10 Gbps signals 100 meters?

Today,the main benefit of optical fiber compared with UTP is ________.

Which of the following layers deals with messages?

What is a typical core diameter for multimode fiber?

Which type of transmission is more widely used today?

When one pair in a UTP cord interferes with signals in other pairs,this is ________.

For their transmission medium,cable television companies primarily use coaxial cable.

The lowest-speed leased lines (under about 2 Mbps)use ________.

Compared with single-mode fiber,multimode fiber has ________ core.

Businesses can select multimode fiber to transmit 1000BASE-SX signals farther by ________.

In the UTP wiring used in LANs,how many wire pairs are there in a cord?

In binary signaling there is (are)________ state(s).

Which light wavelength dominates use in LAN fiber?

Networking: How We Got Here

Network Standards

Network Security

Network Management

Switched Wired Networks

Wireless Networks I

Wireless Networks 2

Tcp-Ip Internetworking

Internetworking 2

Networked Applications

More on Tcp-Ip

More on Modulation

More on Telecommunications

Filters