MAC, IP addresses and actors which affect network performance

What is a MAC address and why are they needed?

• A unique identifier assigned to network interfaces for communications on the physical network.
• A numerical label assigned to each device connected to a computer network.
• A protocol used for sending data packets over the internet.
• A type of computer program used for browsing the web.
• A method for encrypting data transmitted over a network.

Why do we need IP addresses as well as MAC addresses?

• To uniquely identify devices within a network and enable communication between them.
• To provide a secure connection between a web browser and a website.
• To encrypt data transmitted over a network.
• To store and retrieve data from a database.
• To generate random numbers for cryptographic purposes.

What is the IPv4 format?

• A 128-bit address format represented by eight groups of four hexadecimal digits separated by colons.
• A 32-bit address format represented by four groups of three decimal digits separated by periods.
• A 64-bit address format represented by eight groups of four hexadecimal digits separated by colons.
• A 128-bit address format represented by eight groups of four decimal digits separated by periods.
• A 32-bit address format represented by four groups of three hexadecimal digits separated by colons.

What is the IPv6 format?

• A 128-bit address format represented by eight groups of four hexadecimal digits separated by colons.
• A 32-bit address format represented by four groups of three decimal digits separated by periods.
• A 64-bit address format represented by eight groups of four hexadecimal digits separated by colons.
• A 128-bit address format represented by eight groups of four decimal digits separated by periods.
• A 32-bit address format represented by four groups of three hexadecimal digits separated by colons.

What is the purpose of subnetting in IP networking?

• To divide a large network into smaller subnetworks for better management and efficiency.
• To encrypt data transmitted over a network.
• To establish secure connections between devices on different networks.
• To prevent unauthorized access to a network by creating virtual barriers.
• To translate IP addresses into human-readable domain names.

What is a DNS server and what is its purpose?

• A DNS server translates human-readable domain names into IP addresses and vice versa.
• A DNS server encrypts data transmitted over a network.
• A DNS server filters incoming and outgoing network traffic.
• A DNS server assigns IP addresses to devices connected to a network.
• A DNS server establishes secure connections between devices on the same network.

What is the purpose of a firewall in network security?

• To protect a network from unauthorized access and malicious activities by monitoring and controlling incoming and outgoing traffic.
• To translate IP addresses into human-readable domain names.
• To assign IP addresses to devices connected to a network.
• To establish secure connections between devices on the same network.
• To block specific websites and applications from accessing the network.

What is the role of a router in a computer network?

• A router forwards data packets between different networks based on their IP addresses.
• A router encrypts data transmitted over a network.
• A router filters incoming and outgoing network traffic.
• A router assigns IP addresses to devices connected to a network.
• A router establishes secure connections between devices on the same network.

What is the purpose of SSL/TLS in network security?

• SSL/TLS provides secure communication over a network by encrypting data transmitted between client and server.
• SSL/TLS assigns IP addresses to devices connected to a network.
• SSL/TLS filters incoming and outgoing network traffic.
• SSL/TLS translates IP addresses into human-readable domain names.
• SSL/TLS establishes secure connections between devices on the same network.

What is the role of an ISP (Internet Service Provider) in networking?

• An ISP provides internet access to users by connecting them to the internet infrastructure.
• An ISP encrypts data transmitted over a network.
• An ISP filters incoming and outgoing network traffic.
• An ISP assigns IP addresses to devices connected to a network.
• An ISP establishes secure connections between devices on the same network.