Data Communications Question Bank
Course Introduction
Data Communications explores the fundamental principles and technologies involved in the transmission of data across networks. This course covers topics such as data transmission modes, network topologies, signal encoding, protocols, error detection and correction, and multiplexing techniques. Students will study both wired and wireless communication systems, gain an understanding of the layers of the OSI and TCP/IP models, and examine the hardware and software components critical to reliable data exchange. Practical exercises will reinforce concepts such as packet switching, network configuration, and troubleshooting, preparing students for advanced study in networking and telecommunications.
Recommended Textbook
Business Data Networks and Telecommunications 8th Edition by Raymond R. Panko
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14 Chapters
1180 Verified Questions
1180 Flashcards
Source URL: https://quizplus.com/study-set/1577 Page 2
Chapter 1: Networking: How We Got Here
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109 Verified Questions
109 Flashcards
Source URL: https://quizplus.com/quiz/31293
Sample Questions
Q1) Different ISPs interconnect at ________.
A)routers
B)switches
C)network access points
D)IMPs
E)portals
Answer: C
Q2) 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
Q3) A company has more control over its ________ technology.
A)LANs
B)WANs
Answer: A
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Page 3
Chapter 2: Network Standards
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100 Verified Questions
100 Flashcards
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Sample Questions
Q1) Nearly all application standards are simple,like HTTP.
A)True
B)False
Answer: False
Q2) Which of the following is an architecture?
A)IP.
B)TCP.
C)Both A and B
D)Neither A nor B
Answer: D
Q3) A 5-bit field can represent ________ alternatives.
A)4
B)8
C)16
D)32
E)64
Answer: D
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Page 4
Chapter 3: Network Security
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124 Verified Questions
124 Flashcards
Source URL: https://quizplus.com/quiz/31297
Sample Questions
Q1) Egress filtering examines packets ________.
A)arriving from the outside
B)leaving to the outside
C)Both A and B
D)Neither A nor B
Answer: B
Q2) Which of the following specifies what should be done?
A)Policies.
B)Implementation.
C)Both A and B
D)Neither A nor B
Answer: A
Q3) Which of the following must be followed?
A)Standards.
B)Guidelines.
C)Both A and B
D)Neither A nor B
Answer: A
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Chapter 4: Network Management
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93 Verified Questions
93 Flashcards
Source URL: https://quizplus.com/quiz/31298
Sample Questions
Q1) The acronym OAM&P stands for ________.
A)organization,authorization,management,and planning
B)operations,administration,maintenance,and provisioning
C)operations,administration,management,and provisioning
D)organization,administration,maintenance,and planning
Q2) Overprovisioning is ________.
A)wasteful of capacity
B)highly labor-intensive
C)Both A and B
D)Neither A nor B
Q3) Which of the following speeds is written properly?
A)1,067 Mbps.
B)0.75 Gbps.
C)87.62 kbps.
D)All of the above.
E)None of the above.
Q4) Overprovisioning is adding much more switching and transmission line capacity than will be needed much of the time.
A)True
B)False
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Chapter 5: Physical Layer Propagation
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90 Verified Questions
90 Flashcards
Source URL: https://quizplus.com/quiz/31299
Sample Questions
Q1) In optical fiber,light travels through the ________.
A)core
B)cladding
C)Neither A nor B
Q2) Which light wavelength propagates farthest in optical fiber?
A)50 nm.
B)850 nm.
C)1550 nm.
D)Both A and B
Q3) Noise errors become severe before the signal attenuates to the level of the noise floor.
A)True
B)False
Q4) In the UTP wiring used in LANs,how many wires are there in a cord?
A)1.
B)2.
C)4.
D)8.
E)25.
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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) Ethernet's hierarchical topology makes it ________.
A)expensive
B)reliable
C)Both A and B
D)Neither A nor B
Q2) The most widely used Ethernet standard for connecting switches to other switches is
A)100BASE-TX
B)1000BASE-LX
C)Both A and B
D)Neither A nor B
Q3) Ethernet and 802.3 are used interchangeably in this book.
A)True
B)False
Q4) In 802.1X,the workgroup switch is the ________.
A)authentication server
B)authenticator server
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
Source URL: https://quizplus.com/quiz/31301
Sample Questions
Q1) There is less interference in the 2.4 GHz band than in the 5 GHz band.
A)True
B)False
Q2) The frequency spectrum extends ________.
A)into the megahertz range
B)into the gigahertz range
C)into the visible light range
D)into the ultraviolet range
E)to infinity
Q3) The signal strength at 20 meters is 90 mW;the signal strength at 60 meters would be 10 mW.
A)True
B)False
Q4) The most widely used 802.11 standard today is ________.
A)802.11a
B)802.11b
C)802.11e
D)802.11g
E)802.11n
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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) Bluetooth does not use access points.
A)True
B)False
Q2) Most wireless WANs operate in a single metropolitan area.
A)True
B)False
Q3) Smart phones ________.
A)provide telephone service
B)support web service
C)often have cameras
D)All of the above.
Q4) What technology could replace universal product code (bar code)tags on products?
A)802.11.
B)Bluetooth.
C)UWB.
D)RFIDs.
Q5) As much as possible,WLAN management software should be able to work automatically,taking as many actions as possible without user intervention.
A)True
B)False
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Chapter 9: Tcp-Ip Internetworking
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102 Verified Questions
102 Flashcards
Source URL: https://quizplus.com/quiz/31303
Sample Questions
Q1) TCP is ________.
A)connectionless
B)unreliable
C)Both A and B
D)Neither A nor B
Q2) In an IP packet,the ________ field value tells the type of message contained in the IP packet's data field.
A)data
B)next-hop
C)next-header
D)protocol
E)None of the above.
Q3) A socket contains a(n)________.
A)IP address
B)port number
C)Both A and B
D)Neither A nor B
Q4) A border router's main job is to connect different subnets in the same network.
A)True
B)False
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Chapter 10: Internetworking 2
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91 Verified Questions
91 Flashcards
Source URL: https://quizplus.com/quiz/31304
Sample Questions
Q1) In IP subnet planning,having a large subnet part allows more hosts per subnet.
A)True
B)False
Q2) DHCP ________ are configurable parameters that determine which subnets the DHCP server will serve.
A)ranges
B)scopes
C)spans
Q3) DHCP servers update the configuration information they store automatically.
A)True
B)False
Q4) In SNMP,companies are often reluctant to use ________ commands because of security dangers.
A)Get
B)Set
C)Neither A nor B
Q5) When an SSL-TLS gateway is used,the client will have only a single SSL-TLS connection.
A)True
B)False
Page 12
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Chapter 11: Networked Applications
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103 Verified Questions
103 Flashcards
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Sample Questions
Q1) In SOA,calls are placed to ________.
A)programs
B)subprograms
C)subroutines
D)service objects
Q2) Transient client presence tends to be a problem in ________.
A)P2P applications
B)client/server applications
C)Both A and B
D)Neither A nor B
Q3) Which of the following is likely to dominate in VoIP?
A)SIP.
B)H.323.
Q4) In Skype,________ is the process where a Skype application looks up the username and IP address of the party it wants to contact.
A)login
B)directory search
C)transport
D)signaling
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Chapter 12: More on Tcp-Ip
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32 Verified Questions
32 Flashcards
Source URL: https://quizplus.com/quiz/31292
Sample Questions
Q1) 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.
Q2) A router sends an ARP message in order to find the ________ address of a destination host on a LAN.
A)IP
B)MAC
C)Both A and B
Q3) A TCP segment begins with octet 8,658 and ends with octet 12,783.What number does the receiving host put in the acknowledgment number field of the TCP segment that acknowledges this TCP segment?
A)8,657.
B)8,658.
C)8,659.
D)12,783.
E)12,784.
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Chapter 13: More on Modulation
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7 Verified Questions
7 Flashcards
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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 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.
Q3) QPSK represents ________ bits per clock cycle.
A)1
B)2
C)4
D)16
Q4) Frequency modulation uses two loudness levels.
A)True
B)False
Page 15
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Chapter 14: More on Telecommunications
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47 Verified Questions
47 Flashcards
Source URL: https://quizplus.com/quiz/31296
Sample Questions
Q1) Which of the following is good for mobile stations?
A)GEOs.
B)LEOs.
C)Both A and B
D)Neither A nor B
Q2) For PBXs,call forwarding is ________.
A)a user service
B)an attendant service
C)a management service
Q3) Within a LATA,ILECs and CLECs interconnect at ________.
A)access points
B)NAPs
C)POPs
D)IXCs
E)switches
Q4) Satellite ________ operate on a point-to-point basis.
A)uplinks
B)downlinks
C)Both A and B
D)Neither A nor B
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