Computer Networks

What is the primary purpose of network protocols?

• To increase the speed of the internet connection.

• To manage the physical layout of network cables.

• To enable communication and data exchange between devices on a network.

• To provide security against cyber threats.

Name three common network protocols and their functions.

• SMTP - Sends emails

• DNS - Resolves domain names

• 1. TCP - Ensures reliable communication; 2. HTTP - Transfers web pages; 3. FTP - Facilitates file transfers.

• IP - Manages network addresses

What layer of the OSI model is responsible for data link control?

• Network Layer

• Transport Layer

• Data Link Layer

• Application Layer

What does TCP stand for in the TCP/IP suite?

• Transmission Communication Protocol

• Transfer Control Protocol

• Transmission Connection Protocol

• Transmission Control Protocol

Explain the difference between TCP and UDP.

• UDP guarantees delivery of packets, while TCP does not.

• TCP and UDP are both connection-oriented protocols with the same speed.

• TCP is faster and connectionless, while UDP is reliable and connection-oriented.

• TCP is reliable and connection-oriented, while UDP is faster and connectionless.

What is the function of the Network layer in the OSI model?

• Encrypting data for secure transmission.

• Managing user authentication and access control.

• Routing and forwarding of data packets between devices across different networks.

• Establishing physical connections between devices.

Which layer of the OSI model deals with session management?

• Transport Layer

• Network Layer

• Data Link Layer

• Session Layer

What is the role of the Application layer in the TCP/IP model?

• The Application layer provides network services to end-user applications and facilitates communication between them and the network.

• The Application layer manages data routing between devices.

• The Application layer encrypts data for secure communication.

• The Application layer is responsible for physical data transmission.

Define what an IP address is and its purpose.

• An IP address is a type of computer virus.

• An IP address is a software application for browsing the internet.

• An IP address is a physical location of a device.

• An IP address is a unique identifier for a device on a network, used to facilitate communication and data routing.

What is the significance of the Transport layer in networking?

• The Transport layer encrypts data for secure transmission.

• The Transport layer is responsible for routing packets across networks.

• The Transport layer manages physical connections between devices.

• The Transport layer ensures reliable data transfer and manages communication between applications.