Data Communications and Networking Exam Questions with Correct Solutions Latest Version 2024

Data Communications and Networking Exam Questions with Correct Solutions Latest Version 2024 One of the responsibilities of the transport layer protocol is to create a _______________ communication. - Answers One of the responsibilities of the transport layer protocol is to create a PROCESS-TO-PROCESS communication. UDP is called a _________________ transport protocol. - Answers UDP is called a CONNECTIONLESS, UNRELIABLE transport protocol. UDP does not add anything to the services of IP except for providing __________________ communication. - Answers UDP does not add anything to the services of IP except for providing PROCESS-TO-PROCESS communication. UDP is acronym for ___________________. - Answers UDP is an acronym for USER DATAGRAM PROTOCOL. Although there are several ways to achieve process-to-process communication, the most common is through the __________________ paradigm. - Answers Although there are several ways to achieve process-to-process communication, the most common is through the CLIENT-SERVER paradigm. The local host and remote host are defined using IP addresses. To define the process, we need second identifiers called _________________. - Answers The local host and remote host are defined using IP addresses. To define the process, we need second identifiers called PORT ADDRESSES. The ports ranging from 49,152 to 65,535 can be used as temporary or private port numbers. They are called the _________________ ports. - Answers The ports ranging from 49,152 to 65,535 can be used as temporary or private port numbers. They are called the DYNAMIC ports. In the sending computer, UDP receives a data unit from the ____________________ layer. - Answers In the sending computer, UDP receives a data unit from the APPLICATION LAYER. In the sending computer, UDP sends a data unit to the ___________________ layer. - Answers In the sending computer, UDP sends a data unit to the IP LAYER. UDP and TCP are both __________________ layer protocols. - Answers UDP and TCP are both TRANSPORT LAYER PROTOCOLS. The function the UDP performs is ____________________. - Answers The function the UDP performs is PROCESS-TO-PROCESS COMMUNICATION. When the IP layer of a receiving host receives a datagram, ____________________. - Answers When the IP layer of a receiving hoat receives a datagram, A TRANSPORT LAYER PROTOCOL TAKES OVER. UDP needs the __________________ address to deliver the user datagram to the correct application process. - Answers UDP needs the PORT address to deliver the user datagram to the correct application process. A port address in UDP is __________ bits long. - Answers A port address in UDP is 16 BITS long. The source port address on the UDP user datagram header defines ____________________. - Answers The source port address on the UDP user datagram header defines THE PROCESS RUNNING ON THE SENDING COMPUTER. The combination of an IP address and a port number is called a __________________. - Answers The combination of an IP address and a port number is called a SOCKET ADDRESS. To use the services of UDP, we need __________________ socket addresses. - Answers To use the services of UDP, we need TWO SOCKET ADDRESSES. UDP packets are called _______________. - Answers UDP packets are called USER DATAGRAMS. UDP packets are encapsulated in _____________________. - Answers UDP packets are encapsulated in an IP DATAGRAM. UDP packets have a fixed-size header of ___________________ bytes. - Answers UDP packets have a fixed-size header of 8 BYTES. UDP uses ___________________ to handle outgoing user datagrams from multiple processes on one host. - Answers UDP uses MULTIPLEXING to handle outgoing user datagrams from multiple processes on one host. UDP uses __________________ to handle incoming user datagrams that go to different processes on the same host. - Answers UDP uses DEMULTIPLEXING to handle incoming user datagrams that go to different processes on the same host. TCP is a __________________ protocol. - Answers TCP is a STREAM-ORIENTED protocol. TCP allows the sending process to deliver data as a ________________ of bytes and allows the receiving process to receiving process to obtain data as a __________________ of bytes. - Answers TCP allows the sending process to deliver data as a STREAM of bytes and allows the receiving process to obtain data as a STREAM of bytes. Because the sending and the receiving processes may not write or read data at the same speed, TCP ___________________. - Answers Because the sending and receiving processes may not write or read data at the same speed, TCP USES BUFFERS. TCP groups a number of bytes together into a packet called a _________________. - Answers TCP groups a number of bytes together into a packet called a SEGMENT. TCP is a ______________ protocol. - Answers TCP is a CONNECTION-ORIENTED PROTOCOL. TCP is a ___________________ transport protocol. - Answers TCP is a RELIABLE transport protocol. TCP uses _____________________ to check the safe and sound arrival of data. - Answers TCP uses an ACKNOWLEDGEMENT MECHANISM to check the safe and sound arrival of data. The bytes of data being transferred in each connection are numbered by TCP. The numbering starts with a __________________. - Answers The bytes of data being transferred in each connection are numbered by the TCP. The numbering starts with a RANDOMLY GENERATED NUMBER. TCP assigns a sequence number to each segment that is being sent. The sequence number for each segment is the number of the ______________ byte carried in that segment. - Answers TCP assigns a sequence number to each segment that is being sent. The sequence number for each segment is the number of the FIRST BYTE carried in that segment. Communication in TCP is ___________________. - Answers Communication in TCP is FULL-DUPLEX. The value of the acknowledgement field in a segment defines the number of the _________________ byte a party expects to receive. - Answers The value of the acknowledgement field in a segment defines the number of the NEXT BYTE A PARTY EXPECTS TO RECEIVE. The acknowledgement number is __________________. - Answers The acknowledgement number is CUMULATIVE. The value of the window size is determined by _____________________. - Answers The value of the window size is determined by THE RECEIVER. The inclusion of the checksum in the TCP segment is ____________________. - Answers The inclusion of the checksum in the TCP segment is MANDATORY. A TCP segment is encapsulated in __________________. - Answers A TCP segment is encapsulated in AN IP DATAGRAM. Connection establishment in TCP is called ___________________ handshaking. - Answers Connection establishment in TCP is called THREE-WAY HANDSHAKING. A SYN segment cannot carry data; it consumes _______________ sequence numbers. - Answers A SYN segment cannot carry data; it consumes ONE SEQUENCE NUMBER. A SYN + ACK segment cannot carry data; it consumes _________________ sequence numbers. - Answers ...