Networking Essentials for Developers

What is the primary purpose of the TCP protocol?

• To encrypt data during transmission.

• To provide reliable, ordered, and error-checked delivery of data.

• To provide a connectionless communication method.

• To ensure fast delivery of data without errors.

Explain the difference between TCP and UDP.

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

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

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

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

What does SSL stand for, and why is it important?

• Secure Sockets Layer

• Secure Sockets Link

• Simple Sockets Layer

• Secure Socket Layer

What is a certificate authority (CA)?

• A CA is a type of computer virus.

• A certificate authority (CA) is a trusted entity that issues digital certificates to verify identities.

• A CA is a network protocol for data transfer.

• A CA is a software program that encrypts data.

Describe the role of DNS in networking.

• DNS provides security by encrypting internet traffic.

• DNS stores website content for faster access.

• DNS is responsible for routing data packets between networks.

• DNS translates domain names into IP addresses, enabling user-friendly access to websites.

What is the function of an IP address?

• To identify and locate devices on a network.

• To manage the speed of internet connections.

• To assign a unique username to each user.

• To encrypt data transmitted over the internet.

What is the difference between IPv4 and IPv6?

• IPv4 supports more devices than IPv6.

• IPv4 is faster than IPv6 due to smaller address size.

• IPv4 has 32-bit addresses; IPv6 has 128-bit addresses, allowing for a much larger address space.

• IPv4 uses 128-bit addresses; IPv6 uses 32-bit addresses.

What does NAT stand for, and what is its purpose?

• Network Address Tracker

• Network Address Translation

• Network Access Technology

• Network Allocation Table

What is a subnet mask?

• A subnet mask is used to determine the network and host portions of an IP address.

• A subnet mask is used for data encryption.

• A subnet mask defines the speed of a network connection.

• A subnet mask is a type of firewall.

Explain what a VPN is and its benefits.

• A VPN is used to store data in the cloud.

• A VPN is a type of antivirus software.

• A VPN provides benefits such as enhanced security, privacy protection, access to restricted content, and the ability to bypass geographical restrictions.

• A VPN only improves internet speed.