Data Communication and Networking for Managers
Exam Answer Key
Course Introduction
This course provides an overview of data communication and networking concepts tailored for managers and business leaders. It explores fundamental principles such as network architecture, protocols, transmission media, and security considerations, emphasizing their impact on organizational efficiency and strategy. Students will gain insights into how modern data networks support business operations, enable digital transformation, and influence decision-making processes. The course enables managers to effectively communicate with technical teams, assess networking requirements, and make informed choices regarding network investments and policy, ensuring alignment with organizational goals.
Recommended Textbook
Business Data Communications and Networking 11th Edition by Jerry FitzGerald
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12 Chapters 1236 Verified Questions
1236 Flashcards
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Page 2
Chapter 1: Introduction to Data Communications
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102 Verified Questions
102 Flashcards
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Sample Questions
Q1) A ___________ is similar to an intranet in that it uses Internet technologies,but is developed for users outside the organization.
A) Internet
B) Usenet
C) Wide Area Network
D) Intranet
Answer: D
Q2) What is the purpose of a data and network communication standard? Give five examples of various standards and describe what that standard is (e.g.,RS 232,HTTP,etc.)
Answer: NO Answer
Q3) The specification stage of the de juro standardization process consists of developing nomenclature and identifying the problems to be addressed.
A)True
B)False
Answer: True
Q4) How are Internet standards developed?What is a defacto standard.
Answer: NO Answer
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3
Chapter 2: Application Layer
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100 Verified Questions
100 Flashcards
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Sample Questions
Q1) To get a page from the Web,a user must type in a URL,which stands for:
A) Unknown Resource Locator
B) Unknown Router Location
C) Uniform Router Location
D) Uniform Resource Locator
E) Uniform Resource Library
Answer: D
Q2) One of the most frequently used Telnet applications is
A) WS-FTP
B) PuTTY
C) Outlook
D) Word
Answer: B
Q3) The earliest data communications networks were client-server networks.
A)True
B)False
Answer: False
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Page 4
Chapter 3: Physical Layer
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142 Verified Questions
142 Flashcards
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Sample Questions
Q1) Describe how data could be transmitted using a combination of modulation techniques.
Answer: Data can be transmitted using a combination of modulation techniques by first converting the digital data into analog signals through a process called modulation. This can be achieved by using techniques such as amplitude modulation (AM), frequency modulation (FM), or phase modulation (PM).
Once the digital data is converted into analog signals, these signals can then be further modulated using techniques such as quadrature amplitude modulation (QAM) or phase-shift keying (PSK) to encode multiple bits of data into a single symbol. This allows for more efficient use of the available bandwidth and increases the data transmission rate.
By combining these modulation techniques, data can be transmitted over various communication channels such as wired or wireless networks, enabling the efficient and reliable transfer of information over long distances. This combination of modulation techniques allows for the optimization of data transmission in terms of speed, reliability, and bandwidth utilization.
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Chapter 4: Data Link Layer
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102 Verified Questions
102 Flashcards
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Sample Questions
Q1) Which of the following is not an error detection method used in the data link layer?
A) parity checking
B) cyclic redundancy checking
C) CRC-32
D) pulse code checking
E) odd parity
Q2) What is transmission efficiency? How do information bits differ from overhead bits? What are three issues which might effect packet throughput rates? Which is better for file transfer,large packet sizes or small packet sizes?
Q3) In an odd parity-checking scheme,the parity bit is set to make the total number of ones in the byte (including the parity bit)an even number.
A)True
B)False
Q4) Crosstalk occurs when the signal transmitted on one circuit or channel of a transmission system creates an undesired effect in another circuit or channel.
A)True
B)False
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Chapter 5: Network and Transport Layers
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115 Verified Questions
115 Flashcards
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Sample Questions
Q1) ___________ is the process of determining the path that a message will travel from sending computer to receiving computer.
A) Routing
B) Addressing
C) Interfacing
D) Broadcasting
E) Packetizing
Q2) Connectionless routing sets up a TCP connection,or virtual circuit between a sender and receiver.
A)True
B)False
Q3) What is address resolution? How does TCP/IP perform address resolution for network layer addresses? How does TCP/IP perform address resolution for data link layer addresses?
Q4) A typical TCP packet has a _______ header of control information.
A) 32-bit
B) 64-bit
C) 160-bit
D) 192-bit
E) 32-byte
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Chapter 6: Wired and Wireless LANs
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141 Verified Questions
141 Flashcards
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Sample Questions
Q1) Switch-based Ethernet:
A) uses a hub to connect computers
B) has a physical topology of a ring
C) has a logical topology of a ring
D) has a logical topology of a bus
E) usually enables all attached circuits to send or receive packets simultaneously
Q2) Which of the following is not a basic LAN component?
A) client
B) PAD
C) server
D) network interface card
E) network operating system
Q3) When might you prefer to deploy 802.11a over 802.11b?Why?Where does 802.11g and 802.11n fit in between these technologies?What is the MAC for 802.11g?
Q4) How might you as a network manager improve WLAN performance?
Q5) Directional antennas signals are much stronger than omnidirectional antennas.
A)True
B)False
Q6) Describe war-chalking,war-driving,and war-walking.
Page 8
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Chapter 7: Backbone Networks
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76 Verified Questions
76 Flashcards
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Sample Questions
Q1) Routed backbones use switches that move packets based on data link layer addresses.
A)True
B)False
Q2) The biggest drawbacks to VLANs are their_________________.
A) cost and management complexity
B) size and contention
C) contention and cost
D) learning curve and contention
E) speed and size
Q3) Routers operate at the application layer.
A)True
B)False
Q4) Which of the following would be least effective in improving backbone performance?
A) improving the computers in the network
B) changing the demand placed on the network
C) adding new keyboards to the client computers
D) upgrading the circuits between computers
E) improving devices in the network
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Chapter 8: Wide Area Networks
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89 Verified Questions
89 Flashcards
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Sample Questions
Q1) POTS always uses the came circuit paths each time a number is dialed so that quality and maximum data rate is always the same.
A)True
B)False
Q2) In a packet switched network,permanent virtual circuits that look very similar to a _____________ (for hardware-based dedicated circuits)move packets through the network.
A) cloud-based ring design
B) cloak-based mesh design
C) cloud-based mesh design
D) common carrier ring design
E) common carrier bus design
Q3) Which of the following type of networks permit packets from separate messages to be interleaved?
A) circuit switched network
B) dedicated circuit network
C) dial up circuit network
D) packet switched network
E) Fractional T-1 network
Q4) How does a SVC differ from a PVC?
Page 10
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Chapter 9: The Internet
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81 Verified Questions
81 Flashcards
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Sample Questions
Q1) What are some future technologies that might change how we access the Internet?
Q2) Peering means that a tier 1 ISP does not charge another tier 1 ISP to transmit its messages.
A)True
B)False
Q3) Which of the following new Internet efforts was started by 34 universities?
A) CA*net 3
B) ARDNOC
C) vBNS
D) NGI
E) UCAID
Q4) Why is FTTH such a good option,if available in your area?
Q5) In 1996,The National Science foundation provided $100 million to start the ___________ program to develop the very-high-performance Backbone Network Service.
A) CA*Net3
B) UCAID
C) Next Generation Internet
D) Internet 3
E) WAP proxy
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Chapter 10: Network Security
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122 Verified Questions
122 Flashcards
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Sample Questions
Q1) The three basic network access points into most organizational networks are from the Internet,from LANs inside of the organization and ________________.
A) dial-up access through a modem
B) intranet
C) extranet
D) WAN
E) none of the above
Q2) Confidentiality is not a threat to business continuity.
A)True
B)False
Q3) Which of the following is not a type of intruder who attempts to gain intrusion to computer networks?
A) Delphi team member
B) script kiddies
C) crackers
D) professional hackers
E) organization employees
Q4) Compare and contrast DES and public key encryption.
Q5) How does IPS anomaly detection differ from misuse detection?
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Chapter 11: Network Design
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95 Verified Questions
95 Flashcards
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Sample Questions
Q1) The large network purchases are done:
A) before the vendor(s) are selected
B) before the RFP is sent out
C) after the RFP is sent out, but before the vendor(s) are selected
D) after the vendor(s) are selected
E) after the network has been implemented
Q2) The traditional network design approach does not work well for _________ networks.
A) slowly evolving
B) rapidly growing
C) static
D) modestly growing
E) not growing
Q3) When devices operate as fast as the circuits they connect and add virtually no delays,we say that the device operates at _______________.
A) network speed
B) wire speed
C) content speed
D) balancing speed
E) none of the above
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Chapter 12: Network Management
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71 Flashcards
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Sample Questions
Q1) To help in negotiating site licenses for software,it is important to document which software packages are installed on each client.
A)True
B)False
Q2) __________ refers to preventing,detecting,and correcting faults in the network circuits,hardware,and software.
A) Fault management
B) Fault tolerance
C) Firefighting
D) Performance management
E) Troubleshooting
Q3) Describe the process of managing network performance and fault management,including network monitoring,failure control,and problem resolution.
Q4) If managers do not pay enough attention to planning and organizing the network,they are going to end up being proactive vs.reactive in solving network problems.
A)True
B)False
Q5) Why is desktop management important?
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