module 14

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? 1 segment 10 segments 100 segments 1000 segments

10 segments

Which flag in the TCP header is used in response to a received FIN in order to terminate connectivity between two network devices? FIN ACK SYN RST

ACK

Which protocol or service uses UDP for a client-to-server communication and TCP for server-to-server communication? HTTP FTP DNS SMTP

DNS

How are port numbers used in the TCP/IP encapsulation process? Source port numbers and destination port numbers are not necessary when UDP is the transport layer protocol being used for the communication. Source port and destination port numbers are randomly generated. If multiple conversations occur that are using the same service, the source port number is used to track the separate conversations. Destination port numbers are assigned automatically and cannot be changed.

If multiple conversations occur that are using the same service, the source port number is used to track the separate conversations

What does a client do when it has UDP datagrams to send? It just sends the datagrams. It queries the server to see if it is ready to receive data. It sends a simplified three-way handshake to the server. It sends to the server a segment with the SYN flag set to synchronize the conversation.

It just sends the datagrams

Which three application layer protocols use TCP? (Choose three.) SMTP FTP SNMP HTTP TFTP DHCP

SMTP,FTP,HTTP

Which three statements characterize UDP? (Choose three.) UDP provides basic connectionless transport layer functions. UDP provides connection-oriented, fast transport of data at Layer 3. UDP relies on application layer protocols for error detection. UDP is a low overhead protocol that does not provide sequencing or flow control mechanisms. UDP relies on IP for error detection and recovery. UDP provides sophisticated flow control mechanisms

UDP provides basic connectionless transport layer functions UDP relies on application layer protocol for error detection UDP is a low overhead protocol that does not provide sequencing or flow control mechanisms

What is a characteristic of UDP? UDP datagrams take the same path and arrive in the correct order at the destination.​ Applications that use UDP are always considered unreliable.​ UDP reassembles the received datagrams in the order they were received. UDP only passes data to the network when the destination is ready to receive the data.

UDP reassembles the received datagram in the order they were received.

Which two types of applications are best suited for UDP? (Choose two.) applications that need data flow control applications that require reliable delivery applications that handle reliability themselves applications that need the reordering of segments applications that can tolerate some data loss, but require little or no delay

applications that handle reliability themselves and applications that can tolerate some data loss, but requires little or no delay

Why does HTTP use TCP as the transport layer protocol? to ensure the fastest possible download speed because HTTP is a best-effort protocol because transmission errors can be tolerated easily because HTTP requires reliable delivery

because HTTP requires reliable delivery

Which field in the TCP header indicates the status of the three-way handshake process? window reserved checksum control bits

control bits

What important information is added to the TCP/IP transport layer header to ensure communication and connectivity with a remote network device? timing and synchronization destination and source port numbers destination and source physical addresses destination and source logical network addresses

destination and source port numbers

Which two characteristics are associated with UDP sessions? (Choose two.) Destination devices receive traffic with minimal delay. Transmitted data segments are tracked. Destination devices reassemble messages and pass them to an application. Received data is unacknowledged. Unacknowledged data packets are retransmitted

destination devices receive traffic with minimal delay and received data is unacknowledged

What are two roles of the transport layer in data communication on a network? (Choose two.) identifying the proper application for each communication stream tracking the individual communication between applications on the source and destination hosts providing frame delimiting to identify bits making up a frame performing a cyclic redundancy check on the frame for errors providing the interface between applications and the underlying network over which messages are transmitted

identifying the proper application for each communication stream and tracking the individual communication between applications on the source and destination hosts.

Which three fields are used in a UDP segment header? (Choose three.) Window Size Length Source Port Acknowledgment Number Checksum Sequence Number

length, source port, checksum

What kind of port must be requested from IANA in order to be used with a specific application? registered port private port dynamic port source port

registered port

What information is used by TCP to reassemble and reorder received segments? port numbers sequence numbers acknowledgment numbers fragment numbers

sequence numbers

Which factor determines TCP window size? the amount of data to be transmitted the number of services included in the TCP segment the amount of data the destination can process at one time the amount of data the source is capable of sending at one time

the amount of data the destination can process at one time

Which two fields are included in the TCP header but not in the UDP header? (Choose two.) window checksum source port destination port sequence number

Window and Sequence number