Network Security
Textbook Exam Questions
Course Introduction
Network Security is a comprehensive course that explores the principles, practices, and technologies used to safeguard computer networks from unauthorized access, abuse, and attacks. Covering topics such as cryptography, authentication protocols, secure routing, intrusion detection and prevention systems, firewalls, and network vulnerabilities, the course aims to provide students with a solid understanding of threat models, security policies, and risk management. Through theoretical foundations and practical exercises, students gain the skills necessary to assess network security, implement protective measures, and respond to security incidents in both enterprise and cloud environments.
Recommended Textbook
Business Data Networks and Telecommunications 8th Edition by Raymond R. Panko
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14 Chapters
1180 Verified Questions
1180 Flashcards
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Chapter 1: Networking: How We Got Here
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109 Verified Questions
109 Flashcards
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Sample Questions
Q1) Your ISP gives your home a single IP address.What in the access router allows you to have multiple devices share a single IP address?
A)DHCP.
B)DNS.
C)NAT.
D)Multiplexing.
Answer: C
Q2) Hosts on the Internet have ________ address(es).
A)1.
B)2.
C)3.
D)4.
E)5.
Answer: B
Q3) Which protocol provides a client PC with its dynamic IP address?
A)The Post Office Protocol (POP).
B)The Transmission Control Protocol (TCP).
C)The Dynamic Host Configuration Protocol (DHCP).
D)The Internet Protocol (IP).
Answer: C
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Chapter 2: Network Standards
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100 Flashcards
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Sample Questions
Q1) The OSI ________ layer allows application communication to be restarted at the last rollback point.
A)application
B)presentation
C)session
D)transport
E)All of the above.
Answer: C
Q2) IBM mainframes traditionally used ________ internetworking standards.
A)TCP/IP
B)OSI
C)IPX/SPX
D)AppleTalk
E)SNA
Answer: E
Q3) Most or all messages have trailers.
A)True
B)False
Answer: False
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Page 4
Chapter 3: Network Security
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124 Verified Questions
124 Flashcards
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Sample Questions
Q1) Which of the following can spread more rapidly?
A)Directly-propagating viruses.
B)Directly-propagating worms.
C)Both of the above can spread with equal speed.
Answer: B
Q2) Authentication should be ________.
A)as strong as possible
B)appropriate for risks to the resource
C)the same for all resources,for consistency
D)All of the above.
Answer: B
Q3) Cryptographic systems provide ________.
A)confidentiality
B)message integrity
C)Both A and B
D)Neither A nor B
Answer: C
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Chapter 4: Network Management
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Sample Questions
Q1) 47,000,000 bps is ________.
A)47 kbps
B)47 Tbps
C)47 Gbps
D)47 Mbps
E)None of the above.
Q2) Carrier costs occur during the ________.
A)SLC
B)SDLC
C)Both A and B
D)Neither A nor B
Q3) Firms generally make their own routers and switches,rather than purchasing them.
A)True
B)False
Q4) In the ________ topology,there is only a single possible path between two end nodes.
A)mesh
B)hierarchical
C)bus
D)None of the above.
Page 6
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Chapter 5: Physical Layer Propagation
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90 Flashcards
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Sample Questions
Q1) Compared with UTP,optical fiber is ________ expensive to buy and install today.
A)less (when all costs of purchasing and installation are considered)
B)about as
C)more
Q2) For their transmission medium,cable television companies primarily use coaxial cable.
A)True
B)False
Q3) A high signal-to-noise ratio reduces ________ errors.
A)signal
B)noise
C)interference
D)attenuation
E)All of the above.
Q4) Parallel transmission is transmission over ________.
A)four wire pairs
B)two or more wire pairs
Q5) Multimode optical fiber quality is measured as MHz.km.
A)True
B)False
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Chapter 6: Switched Wired Networks
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Sample Questions
Q1) A purpose of the LLC subheader is to describe the type of packet contained in the data field.
A)True
B)False
Q2) Which of the following offers speeds that match speed range of greatest corporate demand for WAN transmission?
A)Frame Relay.
B)ATM.
C)Both A and B
D)Neither A nor B
Q3) Which of the following is a layer within the data link layer?
A)LLC layer.
B)MAC layer.
C)Both A and B
D)Neither A nor B
Q4) Frame Relay frames contain ________.
A)destination addresses
B)virtual circuit numbers
C)Both A and B
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Chapter 7: Wireless Networks I
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78 Verified Questions
78 Flashcards
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Sample Questions
Q1) What propagation problem becomes worse as frequency increases?
A)Inverse square law attenuation.
B)Electromagnetic interference.
C)Both A and B
D)Neither A nor B
Q2) To transmit very rapidly in RADIO,you need ________.
A)single-frequency transmission
B)single-mode transmission
C)multimode transmission
D)wide bandwidth
E)narrow bandwidth
Q3) An 802.11g access point has an actual speed of 30 MHz.This is ________.
A)the rated speed
B)aggregate throughput
C)channel bandwidth
Q4) Signals usually ________.
A)travel at a single frequency
B)spread over a range of frequencies
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Chapter 8: Wireless Networks 2
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102 Verified Questions
102 Flashcards
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Sample Questions
Q1) 802.11i uses ________ as its encryption method.
A)RC4
B)802.11s
C)AES-CCMP
D)WPA
Q2) Bluetooth does not use access points.
A)True
B)False
Q3) By regulation,cellular systems must give almost the same throughput at different places in their service areas.
A)True
B)False
Q4) Which of the following is NOT a security extension to EAP?
A)EAP-TTLS.
B)MS-EAP.
C)PEAP.
Q5) Some smart phones can act as wireless access points.
A)True
B)False
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Chapter 9: Tcp-Ip Internetworking
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102 Verified Questions
102 Flashcards
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Sample Questions
Q1) If -14 is a subnet mask,how many bits are there in the network part?
A)8.
B)14.
C)16.
D)18.
E)We cannot say.
Q2) Routers send packets out ________.
A)ports
B)connections
C)interfaces
D)plugs
Q3) To handle internetwork transmission control tasks that the IP protocol cannot handle,the IETF created TCP.
A)True
B)False
Q4) Which of the following is reliable?
A)TCP.
B)IP.
C)Both A and B
D)Neither A nor B
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Chapter 10: Internetworking 2
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Sample Questions
Q1) SSL-TLS is very expensive to implement because special configuration must be done on the client PC.
A)True
B)False
Q2) Client PCs need additional software to use basic SSL-TLS functions.
A)True
B)False
Q3) IPsec offers transparent protection.
A)True
B)False
Q4) Which of the following can protect all applications?
A)IPsec.
B)SSL/TLS.
C)Both A and B
D)Neither A nor B
Q5) DHCP servers update the configuration information they store automatically.
A)True
B)False
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Chapter 11: Networked Applications
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Sample Questions
Q1) Terminal-host systems tend to have poor response times compared with client-server processing.
A)True
B)False
Q2) Which of the following is not an issue for cloud utility computing?
A)The possibility of losing access.
B)The possibility of getting locked into proprietary software.
C)Very high costs.
D)Security concerns.
E)Legal complications.
Q3) Which of the following is considered a bigger problem with traditional client-server based architectures than with peer-to-peer architectures?
A)Underutilized processing capacity of client PCs.
B)Potential for essential data/services to become unavailable as a device is turned off.
C)Both A and B
D)Neither A nor B
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Chapter 12: More on Tcp-Ip
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32 Verified Questions
32 Flashcards
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Sample Questions
Q1) There is a mask 1010.There is a number 1100.What is the result of masking the number?
A)1010.
B)1100.
C)0010.
D)1000.
E)1110.
Q2) When an IP packet reaches a router that wishes to send the packet on to a subnet whose MTU is longer than the IP packet,what happens? Read carefully.
A)The router fragments the packet.
B)The subnet fragments the packet.
C)Both the router and the subnet fragment the packet.
D)The packet is not fragmented.
Q3) Which of the following is a distance vector routing protocol?
A)RIP.
B)OSPF.
C)Both A and B
D)Neither A nor B
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Chapter 13: More on Modulation
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Sample Questions
Q1) QAM uses ________.
A)amplitude modulation
B)phase modulation
C)Both A and B
D)Neither A nor B
Q2) In QAM,if you have four possible amplitudes,you have ________ possible states.
A)4
B)8
C)16
D)None of the above.
Q3) Frequency modulation uses two loudness levels.
A)True
B)False
Q4) QPSK represents ________ bits per clock cycle.
A)1
B)2
C)4
D)16
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Page 15
Chapter 14: More on Telecommunications
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Sample Questions
Q1) In data wiring,there needs to be four wires for each computer on the floor in
A)horizontal distribution
B)vertical distribution
C)Both A and B
D)Neither A nor B
Q2) Which of the following is good for mobile stations?
A)GEOs.
B)LEOs.
C)Both A and B
D)Neither A nor B
Q3) In TDM,time is first divided into brief periods called ________.
A)packets
B)frames
C)slots
D)cells
E)All of the above.
Q4) ATM provides quality-of-service for voice.
A)True
B)False
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