Data Communications Solved Exam Questions - 1180 Verified Questions

Data Communications Solved Exam Questions

Course Introduction

Data Communications explores the fundamental principles and technologies used to transmit data between devices and across networks. The course covers key topics such as transmission media, signal encoding, data transmission protocols, network architectures, error detection and correction, switching techniques, and data link control. Students learn about the structure and function of local and wide area networks, Ethernet, wireless communication, and the OSI and TCP/IP models. By combining theoretical concepts with practical applications, the course prepares students to understand and analyze data communication systems, ensuring reliable and efficient information exchange in modern digital environments.

Recommended Textbook

Business Data Networks and Telecommunications 8th Edition by Raymond R. Panko

Available Study Resources on Quizplus

14 Chapters

1180 Verified Questions

1180 Flashcards

Source URL: https://quizplus.com/study-set/1577 Page 2

Chapter 1: Networking: How We Got Here

Available Study Resources on Quizplus for this Chatper

109 Verified Questions

109 Flashcards

Source URL: https://quizplus.com/quiz/31293

Sample Questions

Q1) The Internet Protocol is responsible for placing packets that arrive out of order in order.

A)True

B)False

Answer: False

Q2) On the ARPANET,packet switches were called ________.

A)routers

B)gateways

C)IMPs

D)NCPs

E)Both c.and d. Answer: C

Q3) Dynamic IP addresses do not change.

A)True

B)False

Answer: False

Q4) Commercial activity has always been considered acceptable on the Internet.

A)True

B)False

Answer: False

To view all questions and flashcards with answers, click on the resource link above. Page 3

Chapter 2: Network Standards

Available Study Resources on Quizplus for this Chatper

100 Verified Questions

100 Flashcards

Source URL: https://quizplus.com/quiz/31295

Sample Questions

Q1) In binary,13 is 1101.What is 14?

A)1110

B)1111

C)Neither A nor B

Answer: A

Q2) Which of the following is a standards agency for OSI?

A)IETF.

B)ITU-T.

C)Both A and B

D)Neither A nor B

Answer: B

Q3) A 7-bit field can represent ________ alternatives.

A)14

B)49

C)128

D)256

E)512

Answer: C

To view all questions and flashcards with answers, click on the resource link above.

Page 4

Chapter 3: Network Security

Available Study Resources on Quizplus for this Chatper

124 Verified Questions

124 Flashcards

Source URL: https://quizplus.com/quiz/31297

Sample Questions

Q1) 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

Q2) ACLs are used for packets in the ________ state.

A)connection-opening

B)ongoing communication

C)Both A and B

D)Neither A nor B

Answer: A

Q3) Hackers identify possible victim computers by sending ________.

A)worms

B)probe packets

C)hacks

D)exploits

E)compromises

Answer: B

To view all questions and flashcards with answers, click on the resource link above.

Page 5

Chapter 4: Network Management

Available Study Resources on Quizplus for this Chatper

93 Verified Questions

93 Flashcards

Source URL: https://quizplus.com/quiz/31298

Sample Questions

Q1) You can create a network diagram using ________.

A)Microsoft office Visio

B)OPNET's IT Guru

C)Either A or B

D)Neither A nor B

Q2) ________ the physical arrangement of a network's computers,switches,routers,and transmission lines.

A)Network architecture is

B)Network topology is

C)Network layout is

D)Physical layer standards are

Q3) If a carrier does not meet its SLA guarantees,it generally must pay a penalty to its customers.

A)True

B)False

Q4) Broadcasting is used in the ________ topology.

A)mesh

B)hierarchical

C)bus

D)None of the above.

Page 6

To view all questions and flashcards with answers, click on the resource link above.

Chapter 5: Physical Layer Propagation

Available Study Resources on Quizplus for this Chatper

90 Verified Questions

90 Flashcards

Source URL: https://quizplus.com/quiz/31299

Sample Questions

Q1) For full-duplex transmission,optical fiber normally uses ________.

A)1 strand

B)2 strands

C)4 strands

D)8 strands

E)16 strands

Q2) Which type of transmission is more widely used today?

A)Serial.

B)Parallel.

C)Both are used about equally.

Q3) Which light wavelength is the least expensive in optical fiber?

A)50 nm.

B)850 nm.

C)1550 nm.

D)Both A and B

Q4) What type of line connects switches to other switches?

A)Trunk lines.

B)Access lines.

C)Both A and B

D)Neither A nor B

To view all questions and flashcards with answers, click on the resource link above. Page 7

Chapter 6: Switched Wired Networks

Available Study Resources on Quizplus for this Chatper

102 Verified Questions

102 Flashcards

Source URL: https://quizplus.com/quiz/31300

Sample Questions

Q1) ________ provides faster downstream speeds than upstream speeds.

A)HDSL

B)HDSL2

C)Both A and B

D)Neither A nor B

Q2) What 802 Working Group creates security standards?

A)802.1.

B)802.3.

C)802.11.

D)802.X.

Q3) The 802.3 100BASE-TX standard is defined at the ________ layer.

A)physical

B)data link

C)Both A and B

D)Neither A nor B

Q4) Ethernet and 802.3 are used interchangeably in this book.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above.

Page 8

Chapter 7: Wireless Networks I

Available Study Resources on Quizplus for this Chatper

78 Verified Questions

78 Flashcards

Source URL: https://quizplus.com/quiz/31301

Sample Questions

Q1) Interference is minimized in ________.

A)licensed bands

B)unlicensed bands

Q2) Channels with wide bandwidths are called ________ channels.

A)single-mode

B)multimode

C)full-duplex

D)broadband

E)modulated

Q3) (From the box,"Controlling 802.11 Transmission")Media access control governs transmission by ________.

A)access points

B)wireless NICs

C)Both A and B

D)Neither A nor B

Q4) Which unlicensed band provides greater propagation distance for a given level of power?

A)2.4 GHz.

B)5 GHz.

C)Both A and B allow about the same propagation distance.

To view all questions and flashcards with answers, click on the resource link above. Page 9

Chapter 8: Wireless Networks 2

Available Study Resources on Quizplus for this Chatper

102 Verified Questions

102 Flashcards

Source URL: https://quizplus.com/quiz/31302

Sample Questions

Q1) What is the planned long-term speed of 3G service for mobile devices?

A)1 Mbps.

B)10 Mbps.

C)100 Mbps.

D)1 Gbps.

Q2) ________ is an approach for implementing multiple radio technologies in a single device at reduced cost.

A)UWB

B)ZigBee

C)Software defined radio

D)Agile radio

E)Bluetooth

Q3) To drive around a city looking for working access points that are unprotected is ________.

A)drive-by hacking

B)war driving

Q4) Bluetooth is used for cable replacement.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above. Page 10

Chapter 9: Tcp-Ip Internetworking

Available Study Resources on Quizplus for this Chatper

102 Verified Questions

102 Flashcards

Source URL: https://quizplus.com/quiz/31303

Sample Questions

Q1) In packet fragmentation and reassembly,the ________ field is used.

A)version

B)identification

C)TCP

D)protocol

E)Diff-Serv

Q2) ________ is an interior dynamic routing protocol.

A)RIP

B)BGP

C)Both A and B

D)Neither A nor B

Q3) When a router forwards incoming packets closer to their destination hosts,this is

A)routing

B)switching

C)bridging

D)hopping

Q4) A border router's main job is to connect different subnets in the same network.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above. Page 11

Chapter 10: Internetworking 2

Available Study Resources on Quizplus for this Chatper

91 Verified Questions

91 Flashcards

Source URL: https://quizplus.com/quiz/31304

Sample Questions

Q1) In SNMP,the manager can create ________.

A)traps

B)GET commands

C)Both A and B

D)Neither A nor B

Q2) In IP subnet planning,you need to have at least 130 subnets.How large should your subnet part be?

A)6.

B)8.

C)14.

D)16.

E)None of the above.

Q3) Client PCs must have digital certificates in ________.

A)transport mode

B)tunnel mode

C)Both A and B

D)Neither A nor B

Q4) In SNMP,"object" is another name for "managed device."

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above. Page 12

Chapter 11: Networked Applications

Available Study Resources on Quizplus for this Chatper

103 Verified Questions

103 Flashcards

Source URL: https://quizplus.com/quiz/31305

Sample Questions

Q1) In BitTorrent,________ give information about specific files and where they are stored.

A).torrent files

B)swarms

C)Neither A nor B

Q2) Which of the following is used to retrieve Web pages?

A)HTTP.

B)HTML.

Q3) Which element of the Skype network is in charge of signaling?

A)The login server.

B)Host nodes.

C)Super nodes.

Q4) Which of the following steps in Skype is done P2P?

A)Login.

B)Signaling.

C)Both A and B

D)Neither A nor B

Q5) Virtualization has contributed to the popularity of cloud computing.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above. Page 13

Chapter 12: More on Tcp-Ip

Available Study Resources on Quizplus for this Chatper

32 Verified Questions

32 Flashcards

Source URL: https://quizplus.com/quiz/31292

Sample Questions

Q1) Flow control in TCP depends on the ________ field.

A)acknowledgement number

B)window size

C)Both A and B

D)Neither A nor B

Q2) Which of the following is a distance vector routing protocol?

A)RIP.

B)OSPF.

C)Both A and B

D)Neither A nor B

Q3) Multicasting ________.

A)is supported by Class A addresses

B)is supported by Class B addresses

C)is supported by Class C addresses

D)is supported by Class D addresses

E)is not supported within the Classful addressing system

Q4) Which of the following only transmits updates?

A)RIP.

B)OSPF.

C)Both A and B

To view all questions and flashcards with answers, click on the resource link above. Page 14

Chapter 13: More on Modulation

Available Study Resources on Quizplus for this Chatper

7 Verified Questions

7 Flashcards

Source URL: https://quizplus.com/quiz/31294

Sample Questions

Q1) Frequency modulation uses two loudness levels.

A)True

B)False

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) In QAM,if you have eight possible amplitudes,you have ________ possible states.

A)4

B)8

C)16

D)64

E)None of the above.

Q4) Phase modulation uses two loudness levels.

A)True

B)False

To view all questions and flashcards with answers, click on the resource link above. Page 15

Chapter 14: More on Telecommunications

Available Study Resources on Quizplus for this Chatper

47 Verified Questions

47 Flashcards

Source URL: https://quizplus.com/quiz/31296

Sample Questions

Q1) In the United States,________ handle long-distance communication.

A)ILECs

B)IXCs

C)Both A and B

D)Neither A nor B

Q2) In TDM,a voice conversation gets the same ________ in each ________.

A)frame,packet

B)packet,frame

C)frame,slot

D)slot,frame

Q3) Call restriction refers to a switch's ability to control incoming calls to a station.

A)True

B)False

Q4) Satellite ________ operate on a point-to-point basis.

A)uplinks

B)downlinks

C)Both A and B

D)Neither A nor B

To view all questions and flashcards with answers, click on the resource link above. Page 16