Cisco Quiz 7

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What is the complete range of TCP and UDP well-known ports?

0 to 1023

A host device sends a data packet to a web server via the HTTP protocol. What is used by the transport layer to pass the data stream to the proper application on the server?

destination port number

Fill in the blank using a number. A total of____ messages are exchanged during the TCP session termination process between the client and the server.

four

Which scenario describes a function provided by the transport layer?

A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window

Which factor determines TCP window size?

the amount of data the destination can process at one time

What happens if the first packet of a TFTP transfer is lost?

The TFTP application will retry the request if a reply is not received.

What is a beneficial feature of the UDP transport protocol?

fewer delays in transmission

Compared to UDP, what factor causes additional network overhead for TCP communication?

network traffic that is caused by retransmissions

What is a socket?

the combination of a source IP address and port number or a destination IP address and port number

Which two TCP header fields are used to confirm receipt of data?

Sequence number
Acknowledgement number

During a TCP session, a destination device sends an acknowledgment number to the source device. What does the acknowledgment number represent?

the next byte that the destination expects to receive

During a TCP session, the field is used by the client to request communication with the server

TCP three-way handshake SYN, SYN-ACK and ACK

A host device needs to send a large video file across the network while providing data communication to other users. Which feature will allow different communication streams to occur at the same time, without having a single data stream using all available bandwidth?

multiplexing

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?

10 segments

A technician wishes to use TFTP to transfer a large file from a file server to a remote router. Which statement is correct about this scenario?

The file is segmented and then reassembled in the correct order at the destination, if necessary, by the upper-layer protocol..

What does a client do when it has UDP datagrams to send?

It just sends the datagrams

Which two flags in the TCP header are used in a TCP three-way handshake to establish connectivity between two network devices? (Choose two.)

SYN ACK

What does a client application select for a TCP or UDP source port number?

a random value in the range of the registered ports

Which transport layer feature is used to guarantee session establishment?

TCP 3-way handshake

Match the characteristic to the protocol category

TCP:
window size
3-way handshake
UDP:
best for VoIP
connectionless
Both UPD and TCP:
port number
checksum

Match each application to its connectionless or connection-oriented protocol

TCP: HTTP, FTP, Telnet
UDP: DHCP, TFTP

Consider a datagram that originates on the PC and that is destined for the webserver.

source IP address 192.168.1.2
destination IP address 192.168.2.2
source port number 2578
destination port number 80

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