Computer Networks
Exam Practice Tests
Course Introduction
This course provides a comprehensive introduction to the fundamental concepts of computer networks, covering topics such as network architectures, protocols, and standards. Students will explore the OSI and TCP/IP models, data transmission techniques, error detection and correction, switching and routing, and the principles of wireless and wired communication. The course also examines network security, modern networking applications, and the design and management of local and wide area networks. Through lectures, lab exercises, and real-world case studies, students will gain the practical skills and theoretical knowledge essential for understanding, building, and maintaining computer network systems.
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) Which of the following has greater resistance to transmission errors?
A)Binary signaling.
B)Analog signaling.
C)Both A and B have about the same resistance.
Answer: A
Q2) Users create or enhance website content in ________ applications.
A)Web-based
B)WWW
C)Web 2.0
D)streaming media
Answer: C
Q3) The Dynamic Host Configuration Protocol provides ________.
A)dynamic IP addresses
B)several types of configuration information
C)Both A and B
D)Neither A nor B
Answer: C
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Chapter 2: Network Standards
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100 Verified Questions
100 Flashcards
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Sample Questions
Q1) A corporate network can use either OSI standards at all layers or TCP-IP standards at all layers,but cannot use OSI standards at some layers and TCP-IP standards at other layers.
A)True
B)False
Answer: False
Q2) "Octet" is the same as ________. A)"bit"
B)"byte"
C)Either A or B,depending on the context.
D)Neither A nor B
Answer: B
Q3) What is (are)the well-known port number(s)for HTTP?
A)20 and 21.
B)25.
C)80.
D)None of the above.
Answer: C
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Chapter 3: Network Security
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124 Verified Questions
124 Flashcards
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Sample Questions
Q1) In authentication,the ________ is the party trying to prove his or her identity.
A)supplicant
B)verifier
Answer: A
Q2) When a firewall identifies an attack packet,it ________.
A)discards the packet
B)copies information about the packet into a log file
C)Both A and B
D)Neither A nor B
Answer: C
Q3) Passwords are widely used because ________.
A)they can be used at no additional cost
B)they offer very strong authentication
C)Both A and B
D)Neither A nor B
Answer: A
Q4) The last stage in a hacking attack is the break-in.
A)True
B)False
Answer: False
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Chapter 4: Network Management
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93 Flashcards
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Sample Questions
Q1) Firms generally make their own routers and switches,rather than purchasing them.
A)True
B)False
Q2) Hardware base prices usually give an accurate indication of the actual cost of using the hardware.
A)True
B)False
Q3) QoS is quantified through ________.
A)criteria
B)consensus
C)metrics
D)None of the above.
Q4) Carrier costs occur during the ________.
A)SLC
B)SDLC
C)Both A and B
D)Neither A nor B
Q5) Networking professionals only need to worry about the SDLC-not the SLC.
A)True
B)False
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Chapter 5: Physical Layer Propagation
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90 Verified Questions
90 Flashcards
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Sample Questions
Q1) Parallel transmission is transmission over ________.
A)four wire pairs
B)two or more wire pairs
Q2) Analog signaling is relatively immune to small errors.
A)True
B)False
Q3) UTP categories rate the ________ of cabling.
A)quality
B)cost
C)quality-of-service performance
D)error performance
Q4) What type of interference is the most frequently encountered?
A)Electromagnetic interference.
B)Crosstalk interference.
C)Terminal crosstalk interference.
D)Noise interference.
Q5) Binary signaling is relatively immune to small errors.
A)True
B)False
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Chapter 6: Switched Wired Networks
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102 Verified Questions
102 Flashcards
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Sample Questions
Q1) Most ________ links operate at 256 kbps to 50 Mbps.
A)LAN
B)MAN
C)WAN
D)All of the above.
E)Both a.and c.
Q2) Because of greater transmission distances,WAN transmission speeds are ________ LAN transmission speeds.
A)faster than
B)about the same as C)slower than
Q3) VLANs can be used to provide security.
A)True
B)False
Q4) Why is metro Ethernet popular?
A)Familiarity.
B)Rapid reprovisioning.
C)Both A and B
D)Neither A nor 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) The other wireless device is far away in a known direction.You should use
A)an omnidirectional antenna
B)a dish antenna
C)Both A and B
D)Neither A nor B
Q2) 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
Q3) The terms channel and service band mean roughly the same thing.
A)True
B)False
Q4) Mesh networking in 802.11 is likely to use ________.
A)only wireless devices
B)wireless devices and the site's wired LAN
C)Both A and B
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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) What is the strongest security protocol for 802.11 today?
A)802.11i.
B)802.11s.
C)802.11X.
D)WPA.
E)WEP.
Q2) Which of the following is NOT a security extension to EAP?
A)EAP-TTLS.
B)MS-EAP.
C)PEAP.
Q3) In what mode of 802.11i operation is a central authentication server used?
A)802.1X mode.
B)PSK mode.
C)Both A and B
D)Neither A nor B
Q4) Bluetooth is designed to transmit ________.
A)at high speeds
B)over long distances
C)Both A and B
D)Neither A nor B
Page 10
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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) What does a router do with ARP request messages?
A)It broadcasts them.
B)It sends them directly to the destination host.
C)Both A and B
D)Neither A nor B
Q2) ARP operates at the ________ layer.
A)physical
B)data link
C)internet
D)transport
E)application
Q3) An internal router only connects different IP ________.
A)subnets
B)networks
C)Both A and B
D)Neither A nor B
Q4) The default row will never be selected as the best match row.
A)True
B)False
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Chapter 10: Internetworking 2
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91 Verified Questions
91 Flashcards
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Sample Questions
Q1) In IP subnet planning,having a large subnet part allows more hosts per subnet.
A)True
B)False
Q2) In AD,there is partial replication between domain controllers ________.
A)in the same domain
B)in different domains at adjacent levels in the domain hierarchy
C)Both A and B
D)Neither A nor B
Q3) ________ is a benefit provided by NAT.
A)Transparency
B)Security
C)Both A and B
D)Neither A nor B
Q4) Servers are normally given ________ IP addresses.
A)well-known
B)static
C)dynamic
D)None of the above.
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Page 12
Chapter 11: Networked Applications
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103 Verified Questions
103 Flashcards
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Sample Questions
Q1) In virtualization,the real computer's capacity is divided among a number of
A)hypervisors
B)virtual machines
C)Neither A nor B
Q2) E-mail bodies that have non-English text use ________.
A)RFC 822 and RFC 2822
B)HTTP
C)MIME
D)UNICODE
E)None of the above.
Q3) How many HTTP request-response cycles are needed to transfer a webpage containing three graphics images?
A)1.
B)2.
C)3.
D)4.
E)None of the above.
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13
Chapter 12: More on Tcp-Ip
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32 Verified Questions
32 Flashcards
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Sample Questions
Q1) In TCP fragmentation,what is fragmented?
A)The application layer message.
B)The transport layer message.
C)The internet layer message.
D)All of the above.
Q2) A router sends an ARP message to find the address of a destination host on a LAN subnet.The MAC layer address of the router is in the MAC destination address field of the ________.
A)frame carrying the ARP request message
B)frame carrying the ARP response message
C)Both A and B
D)Neither A nor B
Q3) A host wishes to send an IP packet to a router on its subnet.It knows the router's IP address.The internet layer packet it sends will be ________.
A)a RARP request
B)an ARP request
C)an IP packet
D)an ICMP echo request
E)a routing protocol message
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Page 14
Chapter 13: More on Modulation
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Sample Questions
Q1) In QAM,if you have four possible amplitudes,you have ________ possible states.
A)4
B)8
C)16
D)None of the above.
Q2) Frequency modulation uses two loudness levels.
A)True
B)False
Q3) In QAM,if you have eight possible amplitudes,how many bits can you send per clock cycle?
A)3.
B)6.
C)8.
D)16.
E)None of the above.
Q4) QPSK represents ________ bits per clock cycle.
A)1
B)2
C)4
D)16
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Chapter 14: More on Telecommunications
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47 Flashcards
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Sample Questions
Q1) Which of the following is NOT one of the three categories of PBX services?
A)Attendant services.
B)Management services.
C)Advanced services.
D)User services.
Q2) ________ is widely used in Europe for PSTN signaling.
A)C7
B)SS7
C)Both A and B
D)Neither A nor B
Q3) ATM provides quality-of-service for voice.
A)True
B)False
Q4) Within a LATA,ILECs and CLECs interconnect at ________.
A)access points
B)NAPs
C)POPs
D)IXCs
E)switches
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