CS601 Midterm Preparation MCQs

1-What is the primary definition of telecommunications?

1. Communication using signals
2. Communication over short distances
3. Communication at a distance
4. Communication through written messages

Correct answer: Communication at a distance

2-What is involved in data communications?

1. Exchange of data between two devices via transmission media
2. Exchange of ideas through speech
3. Exchange of data between multiple people
4. Exchange of messages through phone calls

Correct answer: Exchange of data between two devices via transmission media

3-Which of the following is NOT one of the key components for the effectiveness of a data communication system?

1. Delivery
2. Accuracy
3. Simplicity
4. Jitter

Correct answer: Simplicity

4-The exchange of data between two devices is referred to as:

a) Telecommunications

b) Data communications

c) Local communications d) Distance communications

5-Jitter is a factor in determining the effectiveness of which system?

1. Television system
2. Data communication system
3. Telephone system
4. Telegraph system

Correct answer: Data communication system

6- Which of the following describes a simplex communication mode?

1. Data flows in both directions simultaneously
2. Data flows in both directions, but one at a time
3. Data flows in one direction only
4. Data does not flow at all

Correct answer: Data flows in one direction only

7-What does a full-duplex communication system allow?

1. Data flows in one direction only
2. Data flows in both directions simultaneously
3. Data flows in both directions, but one at a time
4. Data flows only when initiated by a server

Correct answer: Data flows in both directions simultaneously

8-What is a network?

1. A device that sends and receives data
2. An interconnection of a set of devices capable of communication
3. A system used for half-duplex communication
4. A security system for data communication

Correct answer: An interconnection of a set of devices capable of communication

9-Which of the following is NOT a factor in network performance?

1. Throughput
2. Delay
3. Security
4. Reliability

Correct answer: Security

10-The physical topology of a network refers to:

a) The physical layout of links and nodes

b) The communication protocol c) The type of data being transmitted d) The method of securing data communication

11-Which of the following is a type of physical topology?

1. Ring
2. Star
3. Bus
4. All of the above

Correct answer: All of the above

12- Local Area Networks (LANs) typically connect hosts within:

a) A city

b) A single office, building, or campus

c) Multiple countries d) A wide geographical span

13-Which of the following is true about Wide Area Networks (WANs)?

1. They connect devices within a single building
2. They cover a larger geographical area than LANs
3. They are always privately owned
4. They only connect two devices

Correct answer: They cover a larger geographical area than LANs

14-Local Area Networks (LANs) are typically:

a) Privately owned

b) Run by telecommunication companies c) Used to cover a town or city d) Used to connect devices globally

15-Which of the following networks spans across countries or even globally?

1. LAN
2. WAN
3. Host network
4. Home network

Correct answer: WAN

16-Which devices are typically interconnected in a WAN?

1. PCs and printers
2. Switches, routers, or modems
3. Only computers
4. None of the above

Correct answer: Switches, routers, or modems

17-Network classification can be based on which of the following factors?

1. Size, geographical coverage, and ownership
2. Protocol
3. Number of hosts
4. Type of communication

Correct answer: Size, geographical coverage, and ownership

18- What is the correct definition of an internet (with lowercase "i")?

1. Two or more networks that can communicate with each other
2. The global network connecting billions of devices
3. A communication protocol
4. A local network within a building

Correct answer: Two or more networks that can communicate with each other

19-The Internet (with uppercase "I") refers to:

a) Two connected networks

b) Thousands of interconnected networks

c) A private network for businesses d) A single, isolated network

20-What type of communication did telegraph and telephone networks use before 1960?

1. Packet-switched communication
2. Variable-rate communication