a. What is a router? b. Which version of IP is the most prevalent today? c....

a. What is a router?

b. Which version of IP is the most prevalent today?

c. Does all traffic running on the Internet use TCP?

d. Compare the address space between IPv4 and IPv6. How many bits are used in each?

e. Why is UDP needed? Why can’t a user program directly access IP?

Expert Solution

Ans a). Router is a device in a computer network which basically route the incoming packets to reach their destination or we can say forward the packets into different network paths which lead them to their destination.

Ans b). IPv4

Ans c). No, some uses UDP as well for example while live streaming a video, UDP is used.
Ans d). Ipv4 uses 32 bit address space whereas ipv6 uses 128 bit address space. Therefore, ipv6 have 2⁹⁶ times more ip addresses as compared to ipv4.

Ans e). UDP is fast and can be used where speed matters the most and losing sone packets don't bother you much. That is reliability is not a problem. Thats why they are used in live streaming.
Application can't directly use IP because there can be multiple application running on the same device having same ip address. Thus, when a packet reaches the device, it doesn't know which application to go to. Thats why port number is used in addition to identify the applications uniquely as well.
Hope it helped! Feel free to ask any doubt in comments. Don't forget to upvote if it helped :).

venereology answered 1 year ago

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