Network layer

What is the primary function of the Network Layer in the OSI model?

Routing packets

Error detection and correction

Data encryption

Session management

What does IP stand for in networking?

Internet Protocol

Internal Protocol

Interconnected Protocol

Integrated Protocol

What is the main difference between IPv4 and IPv6?

Address length

Protocol type

Encryption method

Transmission speed

Which device primarily operates at the Network Layer?

Router

Switch

Hub

Repeater

What is the purpose of subnetting in IP networks?

To divide a large network into smaller, more manageable sub-networks

To increase the transmission speed

To encrypt data

To provide error correction

What is the role of the ARP protocol in networking?

To map IP addresses to MAC addresses

To establish a connection between two devices

To encrypt data packets

To manage session states

Which of the following statements about the Network Layer is true?

It determines the best path for data to travel

It handles physical connections between devices

It manages end-to-end communication sessions

It provides data encryption services

Which of the following protocols is used for error reporting and diagnostics in the Network Layer?

ICMP

TCP

ARP

What is the primary purpose of a subnet mask?

To divide an IP address into network and host portions

To encrypt data packets

To manage session states

To provide error correction

What is the function of the TTL (Time To Live) field in an IP packet?

To limit the lifespan of a packet

To indicate the priority of a packet

To specify the encryption method

To identify the source of a packet

What is the purpose of the default gateway in a network configuration?

To route traffic from a local network to other networks

To assign IP addresses to devices

To encrypt data packets

To manage session states

Which of the following IP address classes is used for multicast groups?

Class D

Class A

Class B

Class C

What is the main advantage of using CIDR (Classless Inter-Domain Routing) over traditional IP addressing?

More efficient allocation of IP addresses

Faster data transmission

Improved data encryption

Better error detection

Which of the following is a characteristic of IPv4 addresses?

32-bit length

128-bit length

Hexadecimal notation

Supports unlimited multicast groups

Which of the following protocols can be used to discover the MAC address associated with a given IP address?

ARP

RARP

ICMP

DHCP

What does CIDR stand for in networking?

Classless Inter-Domain Routing

Classful Internet Domain Routing

Common Internet Data Routing

Centralized Inter-Domain Routing

What is the purpose of the 'ping' command in networking?

To test the reachability of a host

To display the routing table

To assign IP addresses

To encrypt data packets

What is the primary function of a router in a network?

To forward data packets between different networks

To manage end-to-end communication sessions

To provide data encryption services

To handle physical connections between devices

Which protocol is used to dynamically assign IP addresses to devices on a network?

DHCP

DNS

FTP

HTTP

What is the primary purpose of a routing table in a router?

To store routes to various network destinations

To encrypt data packets

To manage session states

To assign IP addresses

Network layer

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