Unit 5 (OCR H446) TCP/IP, DNS, Networking Quiz

What are the four layers of the TCP/IP model?

• Data layer, Transport layer, Internet layer, and Network Access layer

• Application layer, Transport layer, Internet layer, and Network Access layer

• Application layer, Data layer, Internet layer, and Network Access layer

• Application layer, Transport layer, Data layer, and Network Access layer

Explain the function of the Network layer in the TCP/IP model.

• It routes and forwards data packets between different networks.

• It controls the flow of data within the same network

• It manages the physical connection between devices

• It encrypts data for secure transmission

What is the process of DNS resolution?

• Translating a domain name into an IP address

• Creating a new domain name

• Sending data packets over the internet

• Converting an IP address into a domain name

Describe the role of DNS recursive resolver in the DNS resolution process.

• Providing secure access to websites

• Resolving domain names to IP addresses

• Translating IP addresses to domain names

• Managing email servers

What is the purpose of an IP address in networking?

• To store data on the device

• To uniquely identify a device on a network and enable communication between devices.

• To control the speed of the network

• To provide physical location of the device

Explain the difference between IPv4 and IPv6 addressing.

• IPv4 uses 32-bit addresses, while IPv6 uses 128-bit addresses.

• IPv4 addresses are alphanumeric, while IPv6 addresses are numeric.

• IPv4 uses 64-bit addresses, while IPv6 uses 256-bit addresses.

• IPv4 and IPv6 addresses are the same, just named differently.

Name two common routing protocols used in networking.

• OSPF and BGP

• SMTP and POP3

• HTTP and FTP

• SSH and Telnet

Describe the operation of the OSPF routing protocol.

• OSPF is a transport layer protocol that ensures reliable data delivery between hosts.

• OSPF is a link-state routing protocol that uses areas to efficiently exchange routing information and calculate the best paths.

• OSPF is a protocol used for securing wireless networks and encrypting data transmissions.

• OSPF is a distance-vector routing protocol that uses split horizon to prevent routing loops.

What are some common network security threats?

• Spam emails, software updates, firewall configuration

• Physical security, data encryption, password protection

• Social engineering, cloud storage, network monitoring

• Malware, phishing, ransomware, DDoS attacks, insider threats

Explain the concept of a firewall and its role in network security.

• A firewall is a type of antivirus software used to protect a network from malware.

• A firewall is a device that amplifies network signals to improve internet speed.

• A firewall is a network security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules.

• A firewall is a physical wall built around a network to prevent unauthorized access.