1. What is a socket? 2. What does a client do when it has UDP datagrams to send? 3. What are the four fields that are used in UDP segment header?
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1. What is a socket?
2. What does a client do when it has UDP datagrams to send?
3. What are the four fields that are used in UDP segment header?
4. What are the two roles of the transport layer in data communication network?
5. A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending the file using 100-byte segments. How many segments will the server send before it requires an acknowledgment from the PC? Why?
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- consider 3 hosts (A , B and C) where A is running 3-TCP process, B has 1-TCP process and C is running 2-UDP process all process are trying to connect to a web server to download a file . How many new socket(s) will be created at the server side? Explain why?Suppose that a Web server runs in Host C on port 80. Suppose this Web server uses persistent connections, and is currently receiving requests from two different Hosts, A and B. Are all of the requests being sent through the same socket at Host C? If they are being passed through different sockets, do both of the sockets have port 80? Discuss and explain.1. Encode the following message in base64 01010111 00001111 11110000 2. The following is a dump (contents) of a UDP header in hexadecimal format 0045DF0000580000 a. what is the source port number? b. what is the destination port number? c. what is the total length of the user datagram? d. what is the length of the data? e. what is the application layer protocol? 3.Why does the network-layer protocol need to provide packetizing service to the transport layer? 4. List four types of delays in a packet-switch network.
- Let's say that Host C is running a Web server that listens on port 80. Suppose that this web server is able to maintain persistent connections and responds to requests from both Host A and Host B. Is Host C sending all of the requests over the same connection, or are there many sockets in use? Do each of them have port 80 even though they are broadcast over separate sockets? It's something you need to discuss and provide some clarification on.4. [Socket] What is a socket? Suppose a process in Host C has a UDP socket with port number6789. Suppose both Host A and Host B send a UDP segment to Host C with destination portnumber 6789. Will both segments be directed to the same socket at Host C? If so, how will theprocess at Host C know that these two segments originated from two different hosts? 5. [Demultiplex] Define multiplexing and demultiplexing. Briefly explain how TCP demultiplexing isdifferent than UDP demultiplexing. 6. [rdt] Consider a reliable data transfer protocol that uses only negative acknowledgments.Suppose the sender sends data only infrequently. Would a NAK-only protocol be preferable to aprotocol that uses ACKs? Why? Now suppose the sender has a lot of data to send and the end-to-end connection experiences few losses. In this second case, would a NAK-only protocol bepreferable to a protocol that uses ACKs? Why?Why are TCP and UDP used while writing socket code? Exists an other method for writing code for sockets?
- What is the destination MAC address? What is the IP Header length in decimal? What fragment flags are set in the IP Header? What is the source IP address in dotted decimal? What is the source port in decimal? What is the destination port in decimal? What is the TCP header length in decimal? What TCP flags are set?1.Which one is the smallest address class in classfull addressing? A C B D 2.Which of the following is not the type of cable used to connect to the computer network? Coaxial Copper Fiber Aluminum 3.Which protocol do the time sensitive applications prefer at transport layer? DHCP TCP UDP HTTP 4.Which field is not included in MPLS header? Label Checksum Exp Time to live 5.Which of these is used to trigger retransmissions in TCP protocol ? timeout Pipelining POP ACKI NEED ONLY CORRECT OPTION NO NEED TO EXPLAIN IN DEPTH,PLEASE SOLVE ALL THE QUESTION, DON'T LEAVE ANY QUESTION AND IF YOU DON'T KNOW THE CORRECT ANSWER THEN PLEASE LEAVE IT OTHERWISE I WILL DOWNVOTE IT.... 1. Which of the following statements are correct?I. The User Datagram Protocol (UDP) is used for applications that requires constantdata flow.Il.The header size in Transmission Control Protocol (TCP is small when compared tothe header size of User Datagram Protocol (UDP).I!.The Transmission Control Protocol (TCP) is byte oriented.IV. The User Datagram Protocol (UDP) is used for routing.(a) I, II, and III only(b) II, Ill, and IV only(c) I, Ill, and IV only(d) I, Il, and IV only 2. Which of the following statements are true when the block size in a fixed block size filesystem is increased?1. disk throughput is increased2. disk throughput is decreased3. disk space utilization is increased4. disk space utilization is decreased 3. What is the output of below…
- Let's say Host C is a Web server that listens on port 80. Assume that this web server allows persistent connections and that it accepts requests from hosts A and B. Is Host C using the same socket to transmit each request? If they're broadcast over different sockets, do they both have port 80? You should talk about it and provide an explanation.the UDP server described needed only one socket, whereas the TCP server needed two sockets. Why? If the TCP server were to support n simultaneous connections, each from a different client host, how many sockets would the TCP server need?Done in C language and must use multi-threaded socket programming Create a UDP client that is able to send a file to multiple servers. The created server should be run x amount of times for the client to then send the same file to the x amount of servers. Example: ./server 9090 ./server 9091 ./server 9092 ./client 3 (where 3 is the number of servers) output should be confirmations of the servers receiving a packet from the client.
