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Preguntas del test (19)
1What is the complete range of TCP and UDP well-known ports?
- A0 to 1023
- B0 to 255
- C256 to 1023
- D1024 to 49151
2A 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?
- Adestination port number
- Bsource port number
- Csequence number
- Dacknowledgment
3Fill in the blank using a number. A total of____ messages are exchanged during the TCP session termination process between the client and the server.
- Afour
- Bwrong answer
4Which scenario describes a function provided by the transport layer?
- AA 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
- BA student is using a classroom VoIP phone to call home. The unique identifier burned into the phone is a transport layer address used to contact another network device on the same network.
- CA corporate worker is accessing a web server located on a corporate network. The transport layer formats the screen so the web page appears properly no matter what device is being used to view the web site.
- DA student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header.
5Which factor determines TCP window size?
- Athe amount of data the destination can process at one time
- Bthe number of services included in the TCP segment
- Cthe amount of data the source is capable of sending at one time
- Dthe amount of data to be transmitted
6What happens if the first packet of a TFTP transfer is lost?
- AThe TFTP application will retry the request if a reply is not received.
- BThe next-hop router or the default gateway will provide a reply with an error code.
- CThe client will wait indefinitely for the reply.
- DThe transport layer will retry the query if a reply is not received.
7What is a beneficial feature of the UDP transport protocol?
- Afewer delays in transmission
- Bthe ability to retransmit lost data
- Cacknowledgment of received data
- Dtracking of data segments using sequence numbers
8.Compared to UDP, what factor causes additional network overhead for TCP communication?
- Anetwork traffic that is caused by retransmissions
- Bthe identification of applications based on destination port numbers
- Cthe checksum error detection
- Dthe encapsulation into IP packets
9What is a socket?
- Athe combination of a source IP address and port number or a destination IP address and port number
- Bthe combination of the source and destination sequence numbers and port numbers
- Cthe combination of the source and destination sequence and acknowledgment numbers
- Dthe combination of the source and destination IP address and source and destination Ethernet address
10Which two TCP header fields are used to confirm receipt of data?
- Asequence number
- Backnowledgement number
- Cchecksum
- DFIN flag
- ESYN flag
11During a TCP session, a destination device sends an acknowledgment number to the source device. What does the acknowledgment number represent?
- Athe next byte that the destination expects to receive
- Bthe last sequence number that was sent by the source
- Cone number more than the sequence number
- Dthe total number of bytes that have been received
12During a TCP session, the ___ field is used by the client to request communication with the server
- ASYN
- Bwrong answer
13A 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?
- Amultiplexing
- Bwindow size
- Cacknowledgments
- Dport numbers
14A 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?
- A10 segments
- B100 segments
- C1000 segments
- D1 segment
15A 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?
- AThe file is segmented and then reassembled in the correct order at the destination, if necessary, by the upper-layer protocol.
- BThe file is segmented and then reassembled in the correct order by TCP.
- CThe file is not segmented, because UDP is the transport layer protocol that is used by TFTP.
- DLarge files must be sent by FTP not TFTP.
16What does a client do when it has UDP datagrams to send?
- AIt just sends the datagrams
- BIt queries the server to see if it is ready to receive data.
- CIt sends a simplified three-way handshake to the server.
- DIt sends to the server a segment with the SYN flag set to synchronize the conversation.
17Which two flags in the TCP header are used in a TCP three-way handshake to establish connectivity between two network devices? (Choose two.)
- ASYN
- BACK
- CURG
- DPSH
- ERST
- FFIN
18What does a client application select for a TCP or UDP source port number?
- Aa random value in the range of the registered ports
- Ba predefined value in the dynamic port range
- Ca predefined value in the range of the registered ports
- Da predefined value in the well-known port range
- Ea random value in the dynamic port range
- Fa random value in the well-known port range
19Which transport layer feature is used to guarantee session establishment?
- ATCP 3-way handshake
- BUDP sequence number
- CTCP port number
- DUDP ACK flag
Información
- Descripción
- Test sobre Sin título, creado por Tim Tam el 23/10/2014.
- Autor
- Tim Tam
- Idioma
- English
- Visitas
- 2
- Valoración
- Aún sin valoraciones Valora este test