Section # 4 (computer)

Data Communication and Networking

61. What does DNS stand for?

A) Domain Name System
B) Dynamic Network Service
C) Data Network Security
D) Digital Network Server

Answer: A) Domain Name System (DNS)

62. Which of the following is a relational database management system (RDBMS)?

A) MongoDB      B) PostgreSQL      C) Cassandra      D) Redis

B) PostgreSQL

63. What is the purpose of an IP address?

A) To identify a specific device on a network
B) To encrypt data during transmission
C) To manage network traffic
D) To store website content

A) To identify a specific device on a network

64. What does the acronym LAN stand for?

A) Local Area Network      B) Long Access Node      C) Large Area Network      D) Low-latency Authentication Network

A) Local Area Network

65. What does the acronym WAN stand for?

A) Wide Area Network
B) Wireless Access Node
C) Web Application Network
D) Wired Area Node

Answer: A) Wide Area Network

66. Which of the following is not a type of network topology?

A) Star      B) Bus      C) Mesh      D) Loop

Answer: D) Loop

67. What is the purpose of a subnet mask?

A) To identify the network portion of an IP address
B) To encrypt data during transmission
C) To manage network traffic
D) To store website content

Answer: A) To identify the network portion of an IP address

68. Which protocol is used for email communication?

A) HTTP      B) SMTP      C) FTP      D) POP3

Answer: B) SMTP

69. What does the acronym FTP stand for?

A) File Transfer Protocol
B) Fast Transmission Protocol
C) Firewall Testing Procedure
D) File Tracking Protocol

Answer: A) File Transfer Protocol

70. What is a computer network?

A) A device used to display information on a computer screen
B) A collection of interconnected computers and devices that can communicate and share resources
C) A type of software used to create documents and presentations
D) The physical casing that protects a computer’s internal components

Answer: B) A collection of interconnected computers and devices that can communicate and share resources

71. What is the full form of OSI?

A) Optical Service Implementation
B) Open Service Internet
C) Open System Interconnection
D) Operating System Interface

Answer: C) Open System Interconnection

72. Which of the following devices forwards packets between networks by processing the routing information included in the packet?

A) Firewall      B) Bridge      C) Hub      D) Router

Answer: D) Router

73. How many layers are there in the ISO OSI reference model?

A) 7      B) 5      C) 4      D) 6

Answer: A) 7

74.Which layer does the data link layer take packets from and encapsulate them into frames for transmission?

A) Transport layer
B) Application layer
C) Network layer
D) Physical layer

Answer: C) Network layer

75. What is the term for the process of transmitting data over a network in a compressed format?

A) Encryption
B) Decryption
C) Compression
D) Decompression

Answer: C) Compression

76. Which network protocol is used for transmitting data over the internet in a reliable and connection-oriented manner?

A) TCP
B) UDP
C) HTTP
D) FTP

Answer: A) TCP

77. What is the term for the amount of data that can be transmitted over a network in a given amount of time?

A) Bandwidth
B) Throughput
C) Latency
D) Packet loss

Answer: B) Throughput

78. Which network device is used to connect multiple networks together and route traffic between them? A) Switch
B) Router
C) Bridge
D) Hub

Answer: B) Router

79. What is the term for the process of converting analog signals into digital data for transmission over digital networks?

A) Modulation
B) Demodulation
C) Analog-to-digital conversion
D) Digital-to-analog conversion

Answer: C) Analog-to-digital conversion

80. Which network protocol is used for transmitting email over the internet?

A) SMTP
B) POP3
C) IMAP
D) HTTP

Answer: A) SMTP

81. What is the term for the process of securing data in transit over a network?

A) Encryption
B) Decryption
C) Authentication
D) Authorization

Answer: A) Encryption

82. What is the primary function of the Internet Control Message Protocol (ICMP)?

A) To manage network traffic and prevent congestion
B) To detect and prevent network intrusions
C) To configure network devices and services
D) To provide error reporting and diagnostic functions

Answer: D) To provide error reporting and diagnostic functions

83. Which network protocol is used for transmitting data over the internet in a way that ensures it is received in the correct order, and is also secure?

A) TCP
B) UDP
C) SSL/TLS
D) TCP/SSL

Answer: D) TCP/SSL

84. What is the term for the process of transmitting data over a network in a way that ensures it is received by the intended recipient, and not intercepted by others?

A) Encryption
B) Decryption
C) Authentication
D) Confidentiality

Answer: D) Confidentiality

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