TH Block4

Front

Which layer of the OSI model defines the electrical and physical specifications of the networking media?

Back

Physical layer

Answer explanation

The Physical layer of the OSI model is responsible for defining the electrical and physical specifications of the networking media, including cables, switches, and signaling methods.

Front

What sublayer of Layer 2 provides addressing and control of the data link?

Back

Logical Link Control (LLC) sublayer

Answer explanation

The Logical Link Control (LLC) sublayer is responsible for addressing and controlling the data link, ensuring proper communication between devices. The Media Access Control (MAC) sublayer handles access to the physical transmission medium.

Front

Which OSI layer is responsible for routing and logical addressing?

Back

Network layer

Answer explanation

The Network layer is responsible for routing and logical addressing, enabling data to be sent from one device to another across different networks. This layer determines the best path for data transmission.

Front

At which OSI layer does the reliable transmission of data segments occur?

Back

Transport Layer

Answer explanation

The Transport Layer is responsible for the reliable transmission of data segments, ensuring error recovery and flow control, which are essential for maintaining data integrity during communication.

Front

Data representation and code formatting occur at which layer? Options: Application Layer, Transport Layer, Network Layer, Presentation Layer

Back

Presentation Layer

Answer explanation

The Presentation Layer is responsible for data representation and code formatting, ensuring that data is in a usable format for the application layer. This makes it the correct choice for the question.

Front

Which layer provides services to software that requests network services, like browsers and email clients?

Back

Application Layer

Answer explanation

The Application Layer provides network services directly to software applications like browsers and email clients, enabling them to communicate over the network. This makes it the correct choice for the question.

Front

What type of network connects devices over a very small personal area, often using Bluetooth?

Back

Personal Area Network (PAN)

Answer explanation

A Personal Area Network (PAN) connects devices over a very small area, typically using technologies like Bluetooth. This makes PAN the correct choice for connecting personal devices in close proximity.

Front

Which network type spans a city or a large campus?

Back

Metropolitan Area Network (MAN)

Answer explanation

A Metropolitan Area Network (MAN) is designed to cover a city or large campus, connecting multiple Local Area Networks (LANs) within that area. This distinguishes it from PANs, LANs, and WANs, which serve different scopes.

Front

Which network simulates a private network across a public network like the Internet?

Back

Virtual Private Network (VPN)

Answer explanation

A Virtual Private Network (VPN) creates a secure connection over a public network like the Internet, simulating a private network. This allows users to send and receive data as if they were directly connected to a private network.

Front

What is a computer that provides services to other computers called?

Back

server

Answer explanation

A computer that provides services to other computers is called a server. Servers manage resources and data, allowing clients to access them over a network, unlike clients, routers, or switches which serve different functions.