Quiz
CCNA5 Chapter 9 Practice Test
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Perguntas do quiz (21)
1Which two characteristics are associated with UDP sessions? (Choose two.)
- ADestination devices receive traffic with minimal delay.
- BTransmitted data segments are tracked.
- CDestination devices reassemble messages and pass them to an application.
- DReceived data is unacknowledged.
- EUnacknowledged data packets are retransmitted.
2What happens if part of an FTP message is not delivered to the destination?
- AThe message is lost because FTP does not use a reliable delivery method.
- BThe FTP source host sends a query to the destination host.
- CThe part of the FTP message that was lost is re-sent.
- DThe entire FTP message is re-sent.
3A 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?
- Awindow size
- Bmultiplexing
- Cport numbers
- Dacknowledgments
4What kind of port must be requested from IANA in order to be used with a specific application?
- Aregistered port
- Bprivate port
- Cdynamic port
- Dsource port
5What type of information is included in the transport header?
- Adestination and source logical addresses
- Bdestination and source physical addresses
- Cdestination and source port numbers
- Dencoded application data
6What is a socket?
- Athe combination of the source and destination IP address and source and destination Ethernet address
- Bthe combination of a source IP address and port number or a destination IP address and port number
- Cthe combination of the source and destination sequence and acknowledgment numbers
- Dthe combination of the source and destination sequence numbers and port numbers
7What is the complete range of TCP and UDP well-known ports?
- A0 to 255
- B0 to 1023
- C256 – 1023
- D1024 – 49151
8Which flag in the TCP header is used in response to a received FIN in order to terminate connectivity between two network devices?
- AFIN
- BACK
- CSYN
- DRST
9What is a characteristic of a TCP server process?
- AEvery application process running on the server has to be configured to use a dynamic port number.
- BThere can be many ports open simultaneously on a server, one for each active server application.
- CAn individual server can have two services assigned to the same port number within the same transport layer services.
- DA host running two different applications can have both configured to use the same server port.
10Which two flags in the TCP header are used in a TCP three-way handshake to establish connectivity between two network devices? (Choose two.)
- AACK
- BFIN
- CPSH
- DRST
- ESYN
- FURG
11A 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?
- A1 segment
- B10 segment
- C100 segments
- D1000 segments
12Which factor determines TCP window size?
- Athe amount of data to be transmitted
- Bthe number of services included in the TCP segment
- Cthe amount of data the destination can process at one time
- Dthe amount of data the source is capable of sending at one time
13During a TCP session, a destination device sends an acknowledgment number to the source device. What does the acknowledgment number represent?
- Athe total number of bytes that have been received
- Bone number more than the sequence number
- Cthe next byte that the destination expects to receive
- Dthe last sequence number that was sent by the source
14What information is used by TCP to reassemble and reorder received segments?
- Aport numbers
- Bsequence numbers
- Cacknowledgment numbers
- Dfragment numbers
15What does TCP do if the sending source detects network congestion on the path to the destination?
- AThe source host will send a request for more frequent acknowledgments to the destination.
- BThe source will decrease the amount of data that it sends before it must receive acknowledgements from the destination.
- CThe destination will request retransmission of the entire message.
- DThe source will acknowledge the last segment that is sent and include a request for a smaller window size in the message.
16What is a characteristic of UDP?
- AUDP datagrams take the same path and arrive in the correct order at the destination.
- BApplications that use UDP are always considered unreliable.
- CUDP reassembles the received datagrams in the order they were received
- DUDP only passes data to the network when the destination is ready to receive the data.
17What 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.
18What happens if the first packet of a TFTP transfer is lost?
- AThe device will immediately request a retransmission of the missing data.
- BThe device will use sequence numbers to pause the video stream until the correct data arrives.
- CThe device will delay the streaming video until the entire video stream is received.
- DThe device will continue receiving the streaming video, but there may be a momentary disruption.
19Why does HTTP use TCP as the transport layer protocol?
- Ato ensure the fastest possible download speed
- Bbecause HTTP is a best-effort protocol
- Cbecause transmission errors can be tolerated easily
- Dbecause HTTP requires reliable delivery
20When is UDP preferred to TCP?
- Awhen a client sends a segment to a server
- Bwhen all the data must be fully received before any part of it is considered useful
- Cwhen an application can tolerate some loss of data during transmission
- Dwhen segments must arrive in a very specific sequence to be processed successfully
21Which three application layer protocols use TCP? (Choose three.)
- ASMTP
- BFTP
- CSNMP
- DHTTP
- ETFTP
- FDHCP
Informações
- Descrição
- Quiz sobre CCNA5 Chapter 9 Practice Test, criado por Matthew M em 05-12-2016.
- Autor
- Matthew M
- Idioma
- English
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