The Bits and Bytes of Computer Networking - The Network Layer
25 important questions on The Bits and Bytes of Computer Networking - The Network Layer
What is the IP protocol used for?
What is the Routing protocol used for?
What is the Internet Control Message Protocol (ICMP)?
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How do nodes communicate with each other on a Local Area Network?
Is the following IP address correct? If no, why not and if yes, why is it correct?
123.456.789.100
How do we call the format that an IP address is made out of?
What is a dynamic IP address and what are they used for?
What is a static IP address?
What are the primary sections of an IP datagram?
What are the most important fields of the IP datagram?
What is the length of an IP datagram?
Which of the fields are used for fragmentation?
What is the upper layer field used for?
After the Version field comes the Header Length, what does this indicate?
Why is the Header Length almost always 20 bytes with IPv4?
What does the Service type field indicate?
What does the Total Length field indicate?
What does the identification field indicate?
What is a network ID?
What is a host ID?
Since with CIDR, we don't use the IP classes anymore, what do we need to determine the network ID instead?
Why does a router need at least two network interfaces?
What are the steps of basic routing?
2. The router examines the destination IP of the packet
3. The router looks up the IP destination network in its routing table
4. The router forwards the IP destination information through the interface that is closest to the remote network.
These steps are repeated as often as needed until the traffic reaches its destination.
What is the Internet Assigned Numbers Authority (IANA) and why is it necessary for the internet to function?
What are Autonomous System Numbers (ASNs)?
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