Quiz 2

Topics Covered

Wireshark

Understand the basic syntax of Wireshark filters.

The OSI Model

Understand what each layer is responsible for:

• https://www.cloudflare.com/learning/ddos/glossary/open-systems-interconnection-model-osi/

TCP + UDP

Understand the differences between each protocol.

• Structure of packets
• Pros and Cons of each
• Know the three-way handshake for TCP connections

Specific Protocols

• Be able to match application level protocols to their port numbers and whether they use TCP or UDP.
• Understand what various ‘Utility’ protocols are used for.
  • Address Resolution Protocol
    • Maps a device’s logical IP address to its physical MAC (Media Access Control) address.
  • Internet Control Message Protocol
    • Sends error and control messages between hosts and routers.
  • Dynamic Host Configuration Protocol
    • Automates the assignment of IP addresses and other network configuration information to devices on a network.
  • Domain Name Service
    • Translates human-readable domain names (example.com) into machine-readable IP addresses (192.168.0.1).

Example Questions

• In Wireshark capture filters, which syntax correctly captures all traffic only to the IP address 192.168.0.1?

• Which Wireshark filter would you use to display only incoming HTTP requests?

• Which OSI layer is responsible for:

  • converting data into electrical signals or bits for transmission?
  • data segmentation and reassembly?
  • error detection and correction?

• What is the primary purpose of Transport Layer protocols?

• Which protocol operates at the Transport Layer of the OSI model?

• Which of the following best describes the purpose of Network Layer protocols?

• Which of the following statements is true about Application Layer protocols?

• Which of the following is an Application Layer protocol?

• Which of the following represents a valid TCP segment structure?

• In which scenario is TCP preferred over UDP?

• Which of the following statements is true about UDP?

• Which of the following features is supported by TCP but not by UDP?

• Which of the following best describes the three-way handshake used in TCP connections?

• What is the primary purpose of ARP|DNS|DHCP|ICMP (<Full Protocol Name>)?

Please match the protocols with their associated port numbers: