Networking Concepts Quiz

Why is NAT (Network Address Translation) essential for IPv4 networks?

• It allows devices with private IP addresses to communicate over the internet using a single public IP address, conserving IPv4 addresses.

• It encrypts data packets to ensure secure communication over the internet.

• It assigns unique MAC addresses to devices within a local network.

• It replaces the need for routers in a network by directly connecting devices to the internet.

What is the primary reason for the development of IPv6?

• To replace MAC addresses with more efficient identifiers.

• To provide a larger address space and overcome the limitations of IPv4's 32-bit address space.

• To simplify the process of subnetting in local networks.

• To eliminate the need for network protocols like TCP and UDP.

Why is a star topology considered more robust and scalable compared to a bus or ring topology?

• In a star topology, each device connects to a central switch, making it easier to add or remove devices without disrupting the entire network.

• A star topology uses a single cable for all devices, reducing hardware costs.

• A star topology ensures that data packets travel in a circular path, improving speed.

• A star topology does not require any switches or routers, making it simpler to set up.

What is the critical security risk associated with using public IP addresses?

• Public IP addresses are not unique, making it difficult to identify devices on the internet.

• Public IP addresses are visible to anyone on the internet, making devices more vulnerable to cyberattacks.

• Public IP addresses cannot be used for hosting web servers or online services.

• Public IP addresses are slower than private IP addresses, reducing network performance.

Why is subnetting important in large networks?

• Subnetting allows devices to communicate without using IP addresses, relying solely on MAC addresses.

• Subnetting divides a large network into smaller, more manageable sub-networks, improving performance and security.

• Subnetting eliminates the need for routers by creating direct connections between devices.

• Subnetting ensures that all devices in a network share the same public IP address.

What is the primary purpose of a VPN (Virtual Private Network)?

• To increase internet speed for streaming services.

• To create a secure, encrypted connection between two endpoints over the internet.

• To assign public IP addresses to devices within a local network.

• To replace the need for routers in a network.

Which of the following is a private IP address range?

• 192.168.0.0 - 192.168.255.255

• 172.32.0.0 - 172.63.255.255

• 10.0.0.0 - 11.255.255.255

• 169.254.0.0 - 169.254.255.255

Which device is used to forward data packets between different networks?

• Switch

• Hub

• Router

• Node

What is the primary purpose of a MAC address?

• To identify a device on the internet.

• To uniquely identify a device within a local network.

• To encrypt data during transmission.

• To assign IP addresses dynamically.

Which protocol is used to securely transfer files between computers on a network?

• HTTP

• FTP

• TCP

• UDP