Deck 6: Managing Telecommunications

Question 1

Microwave LANs currently can transmit gigabits of data per second making it the fastest transmission method.

Answer 1

False

Question 2

Fiber-optic transmission is limited to T-1 line speed.

Answer 2

False

Question 3

Wireless LANs are replacing wired LANs in businesses.

Answer 3

False

Question 4

The Internet began in 1994 when the World Wide Web was invented.

Question 5

Unlike data-centric networks, voice-centric networks assume intelligent user devices that provide the addressing information.

Question 6

Security is not a major issue associated with wireless computing.

Question 7

Anyone can create a wireless device to operate in unlicensed frequencies without first getting a license from the government.

Question 8

Wireless WiFi networks have consumed most of the available licensed frequencies making future expansion difficult.

Question 9

Wireless communication is primarily based on laser technology, hence its increased transmission speed.

Question 10

Voice over IP utilizes packets switching to transmit voice data across the Internet.

Question 11

When an OSI layer receives a message from the next higher layer, it performs the requested services and then wraps that message in its own layer of control information for use by the corresponding layer at the receiving end.

Question 12

Almost any type of information content can be converted into a digital form.

Question 13

The Internet has been expanded to include support for voice transmission.

Question 14

The seven layers of the OSI model form a standard that requires each telecommunications vendor to utilize each of the seven layers in a precise order.

Question 15

Wired telecommunication speed is limited by its slowest point, typically the last mile.

Question 16

The focus of the telecommunication industry has shifted from voice to data.

Question 17

The transport layer of the OSI reference model controls flow and ensures reliable packet delivery.

Question 18

The OSI reference model is considered an open system.

Question 19

An open network is based on national or international standards so that the products of many manufacturers can attach to it.

Question 20

The oldest part of the telecommunications infrastructure is modems that are used for dial-in access.

Question 21

The oldest part of the telecommunications infrastructure is the:

A) telephone network.
B) public switched telephone network.
C) POTS.
D) All of the above

Question 22

The ________ layer of the international standards for networks controls dialog using protocols such as Secure Socket Layer.

A) application
B) presentation
C) session
D) transport

Question 23

Which of the following provides broadband wireless connections over thousands of miles?

A) WPANs
B) WLANs
C) WMANs
D) WWANs

Question 24

Which if the following is an extension of a company's intranet, for use by customers and suppliers?

A) virtual intranet
B) extranet
C) opticnet
D) virtual Internet

Question 25

Which of the following represents 1 Terabit?

A) 1,000,000,000,000
B) 100,000,000,000
C) 10,000,000,000
D) 1,000,000,000

Question 26

Which of the following transmits the greatest number of bits per second?

A) optical fiber
B) WiFi
C) DSL
D) gigabit Ethernet

Question 27

Which of the following provides wireless network connections in cities and campuses at distances up to 30 miles?

A) WPANs
B) WLANs
C) WMANs
D) WWANs

Question 28

For distances of 10 to 30 miles, all of the following technologies have been used for local-loop
Connections EXCEPT:

A) WiFi
B) Cable
C) T-1
D) DSL

Question 29

Wireless technologies are primarily based upon:

A) microwaves.
B) radio waves.
C) infrared signals.
D) alpha waves.

Question 30

Which of the following is true of the public switched telephone network (PSTN)?

A) It utilizes circuit switching to enable analog voice communication.
B) It utilizes packet switching to enable analog voice communication.
C) Analog signals are sent as sine waves.
D) All of the above

Question 31

The cellular technology that is designed to provide WANs for PCs and multimedia devices to access the Internet is:

A) 1G cellular.
B) 2G cellular.
C) 3G cellular.
D) wireless mesh networks.

Question 32

The ________ layer of the international standards for networks addresses and routes packets using protocols such as IP.

A) network
B) logical link
C) physical
D) transport

Question 33

The basic standards underlying the Internet are described in the:

A) Internet Standards Model.
B) OSI Reference Model.
C) ACSII Telecommunications Model.
D) None of the above

Question 34

The ________ layer of the international standards for networks makes sure no data is lost or garbled.

A) network
B) logical link
C) physical
D) transport

Question 35

VoIP is a ________ transmission technology that uses the internet to transmit voice.

A) wave
B) analog
C) digital
D) circuit

Question 36

The ________ layer of the international standards for networks ensures reliable packet delivery using protocols such as TCP.

A) application
B) presentation
C) session
D) transport

Question 37

The intertwining of voice, data, and video is referred to as:

A) optical convergence.
B) video convergence.
C) digital convergence.
D) None of the above

Question 38

A ________ is a station located at an altitude between 20 and 50 km and at a specified, nominal, fixed point relative to the earth.

A) LEC
B) VSATS
C) HAPS
D) RBOC

Question 39

Which of the following is true of VoIP?

A) Most companies have converted to VoIP.
B) VoIP is limited to local service.
C) VoIP utilizes digital signals and transmits using packets.
D) All of the above

Question 40

The telecommunication industry in the United States is made up of:

A) long distance carriers.
B) local exchange carriers.
C) mid-range service carriers.
D) All of the above

Question 41

Describe Voice over IP.

Question 42

Briefly describe the seven layers of the OSI reference model.

Question 43

Describe three attributes that make the Internet important to corporations.

Question 44

Describe the challenges facing the introduction of 3G Cellular technology.

Question 45

Why is the OIS model called a Reference Model?

Question 46

Briefly describe four wireless network technologies.

Question 47

Discuss the roles of the IS department in the management of telecommunications within an organization.

Question 48

Briefly describe 1G and 2G cellular technology.

Question 49

Briefly describe DSL.

Question 50

What is a wireless mesh network? Why are they important?