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The Importance of Information Systems Management, 8e (McNurlin/Sprague/Bui)
Chapter 6 Managing Telecommunications
1) The oldest part of the telecommunications infrastructure is modems that are used for dial–in
access.
2) The focus of the telecommunication industry has shifted from voice to data.
3) Wired telecommunication speed is limited by its slowest point, typically the last mile.
4) Fiber–optic transmission is limited to T–1 line speed.
5) Microwave LANs currently can transmit gigabits of data per second making it the fastest
transmission method.
6) The Internet began in 1994 when the World Wide Web was invented.
7) The Internet has been expanded to include support for voice transmission.
8) Voice over IP utilizes packets switching to transmit voice data across the Internet.
9) The OSI reference model is considered an open system.
10) 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.
11) The transport layer of the OSI reference model controls flow and ensures reliable packet
delivery.
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12) Wireless WiFi networks have consumed most of the available licensed frequencies making
future expansion difficult.
13) Wireless communication is primarily based on laser technology, hence its increased
transmission speed.
14) Security is not a major issue associated with wireless computing.
15) Wireless LANs are replacing wired LANs in businesses.
16) Unlike data–centric networks, voice–centric networks assume intelligent user devices that
provide the addressing information.
17) Almost any type of information content can be converted into a digital form.
18) An open network is based on national or international standards so that the products of
many manufacturers can attach to it.
19) 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.
20) Anyone can create a wireless device to operate in unlicensed frequencies without first
getting a license from the government.
21) 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
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22) Which of the following transmits the greatest number of bits per second?
A) optical fiber
B) WiFi
C) DSL
D) gigabit Ethernet
23) 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
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
25) 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
26) 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
27) 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
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28) 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
29) 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
30) 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
31) 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
32) Wireless technologies are primarily based upon:
A) microwaves.
B) radio waves.
C) infrared signals.
D) alpha waves.
33) Which of the following provides broadband wireless connections over thousands of miles?
A) WPANs
B) WLANs
C) WMANs
D) WWANs
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34) 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
35) 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.
36) The oldest part of the telecommunications infrastructure is the:
A) telephone network.
B) public switched telephone network.
C) POTS.
D) All of the above
37) 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
38) 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
39) VoIP is a ________ transmission technology that uses the internet to transmit voice.
A) wave
B) analog
C) digital
D) circuit
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40) 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
41) Describe three attributes that make the Internet important to corporations.
42) Describe Voice over IP.
43) Briefly describe the seven layers of the OSI reference model.
44) Briefly describe four wireless network technologies.
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45) Briefly describe 1G and 2G cellular technology.
46) Describe the challenges facing the introduction of 3G Cellular technology.
47) Discuss the roles of the IS department in the management of telecommunications within an
organization.
48) Briefly describe DSL.
49) Why is the OIS model called a Reference Model?
50) What is a wireless mesh network? Why are they important?