Introduction to Networks Quiz

What is the primary purpose of a network?

• To increase computer speed

• To share resources

• To store data locally

• To prevent communication

Answer explanation

The primary purpose of a network is to share resources, allowing multiple devices to access and utilize data, applications, and hardware efficiently. This enhances collaboration and productivity among users.

What defines a computer network?

• A single computer system

• Interconnected electronic devices for communication

• A backup system

• An isolated system

Answer explanation

A computer network is defined as interconnected electronic devices that communicate with each other. This distinguishes it from a single computer system, a backup system, or an isolated system, which do not involve such connections.

Which of the following is the smallest type of network?

• WAN

• LAN

• PAN

• MAN

Answer explanation

A PAN (Personal Area Network) is the smallest type of network, typically used for connecting devices like smartphones and tablets within a short range. In contrast, WAN (Wide Area Network), LAN (Local Area Network), and MAN (Metropolitan Area Network) are larger.

What type of network covers a city?

• CAN

• LAN

• MAN

• PAN

Answer explanation

A MAN (Metropolitan Area Network) is designed to cover a city, connecting multiple LANs within that area. In contrast, CAN (Campus Area Network), LAN (Local Area Network), and PAN (Personal Area Network) cover smaller areas.

In which mode can communication only occur in one direction?

• Simplex

• Half-Duplex

• Full-Duplex

• Multiplex

Answer explanation

In simplex mode, communication occurs in only one direction, meaning one device can send data while the other can only receive. This contrasts with half-duplex and full-duplex modes, which allow for two-way communication.

What is an example of half-duplex communication?

• Telephone

• Walkie-talkie

• Keyboard and monitor

• Video call

Answer explanation

A walkie-talkie is an example of half-duplex communication because it allows one person to speak at a time while the other listens, requiring a push-to-talk button to switch between sending and receiving, unlike a telephone which is full-duplex.

How does full-duplex communication differ from half-duplex?

• It uses a single path for data transmission.

• Both directions transmit data simultaneously.

• It only allows unidirectional communication.

• None of the above.

Answer explanation

Full-duplex communication allows data to be transmitted in both directions simultaneously, unlike half-duplex, which only allows data to flow in one direction at a time. Therefore, the correct choice is that both directions transmit data simultaneously.

Bandwidth measures:

• Theoretical maximum data transfer capacity

• Actual data transfer rate

• Data packet size

• Network latency

Answer explanation

Bandwidth refers to the theoretical maximum data transfer capacity of a network, indicating how much data can be transmitted in a given time frame. It does not measure actual transfer rates, packet sizes, or latency.

Throughput is also known as:

• Maximum data rate

• Effective data rate

• Data packet capacity

• Payload latency

Answer explanation

Throughput refers to the effective data rate, which measures the actual speed of data transfer in a network, accounting for factors like latency and overhead. Thus, the correct answer is 'Effective data rate'.

What role does a server play in the client-server model?

• It requests resources.

• It provides resources or services.

• It connects LANs.

• It stores local files.

Answer explanation

In the client-server model, a server provides resources or services to clients. It processes requests from clients and delivers the necessary data or functionality, making it essential for networked applications.