Module Two Assignments

Understanding Switches

TCP/IP and Subnet Masking

Understanding SOHO Routers

Introduction to Wireshark

Client/Server and Peer-to-Peer Networking

Network Review

The New New Thing Project

TCP/IP and Subnet Masking

  1. What is TCP/IP version 6?

    2. The most recent iteration of the TCP/IP protocol.

  2. What version of TCP/IP will we focus on?

    3. TCP/IP version 4.

  3. What does it mean when we say that TCP/IP is actually a protocol suite?

    4. A protocol suite means that it is made up of a collection of protocols, including TCP (Transmission Control Protocol) and IP (Internet Protocol). IP controls routing of information to different computers, devices, and servers on the network, while TCP determines how computers will speak with each other (what language, speed, etc.)

  4. What is a routable protocol?

    5. A routable protocol means that networks can be divided into multiple subnetworks, so that every computer on a network is not forced to talk to the others connected. The routers act as barriers between different networks and handle all communication between networks.

  5. In TCP/IP, what is windowing?

    6. The process by which the client computer sends information to the server computer. During this process, a packet is sent from one to the other, and the receiving computer sends back a confirmation that the packet has been received. Once communication is established, the computer will begin sending more and more packets to the recipient computer. If a packet is lost during this process, the sending computer will return to sending one packet at a time, then incrementally increasing the number of packets again if communication is successful.

  6. How many bits does an IPv4 address have?

    7. An IPv4 address has 32 bits.

  7. In TCP/IP, what is the default gateway?

    8. The router for the subnetwork you are on. It is what connects your subnetwork to other networks.

  8. What does a Domain Name Server do?

    9. They map domain names to IP addresses. When a user types in a web address to request a website, the DNS server resolves the site name with the appropriate IP address in order to establish a connection to the website.

  9. What is Network Address Translation (NAT)?

    10. In NAT, a computer can hide its unique IP address to the rest of the internet by having it translated. In this process, only the router has the actual value of the private IP address.

  10. In a TCP/IP address, what is an octet?

    11. An octet is the portion of the address that is 8 bits long.

  11. What is the purpose of a subnet mask?

    12. A subnet mask is a 32-bit number that masks an IP address, and divides the IP address into a network address and host address.

  12. What would the subnet mask be if you wanted to use 8 bits for the network address and 8 bits for subnets?

    13. 255.255.255.255

  13. When was the last time that class full addressing was commonly used?

    14. The last time class full addressing was common was in 1992.

  14. What replaced class full addressing?

    15. It was replaced by Classless Inter-Domain Routing, or CIDR.