《ENetwork-Chapter-4》由会员分享，可在线阅读，更多相关《ENetwork-Chapter-4（6页珍藏版）》请在金锄头文库上搜索。
1、Assessment-ENetwork Chapter 4 CCNA Exploration1.Based on the transport layer header shown in the diagram. Which of the following statements describe the established session? (Choose two) A. This is a UDP headerB. This contains a Telnet requestC. This contains a TFTP data transferD. The return packet
2、 from this remote host will have an Acknowledgement Number of 43693E. This is a TCP header2. With TCP/IP data encapsulation, Which range of port numbers identifies all well-known applications? A. 0 to 255 B. 256 to 1022 C. 0 to 1023 D. 1024 to 2047 E. 49153 to 655353.Why are port numbers included in
3、 the TCP header of a segment? A. to indicate the correct router interface that should be used to forward a segment B. to identify which switch ports should receive or forward the segment C. to determine which Layer 3 protocol should be used to encapsulate the data D. to enable a receiving host to fo
4、rward the data to the appropriate application E. to allow the receiving host to assemble the packet in the proper order4.Which OSI model layer is responsible for regulating the flow of information from source to destination, reliably and accurately? A. application B. presentation C. session D. trans
5、port E. network推荐精选5.Refer to the exhibit. Host A is using FTP to download a large file from Server 1 . During the download process, Server1 does not receive an acknowledgment from Host A for several bytes of transferred data. What action will Server1 take as a result? A. Create a Layer 1 jam signal
6、B. Reach a timeout and resend the data that needs to be acknowledgedC. Send a RESET bit to the hostD. Change the window size in the Layer 4 header6.Why is flow control used for TCP data transfer? A. to synchronize equipment speed for sent data B. to synchronize and order sequence numbers so data is
7、sent in complete numerical order C. to prevent the receiver from being overwhelmed by incoming data D. to synchronize window size on the server E. to simplify data transfer to multiple hosts7.Which two options represent Layer 4 addressing? (Choose two) A. identifies the destination network B. identi
8、fies source and destination hosts C. identifies the communicating applications D. identifies multiple conversations between the hosts E. identifies the devices communicating over the local media8.推荐精选Refer to the exhibit. In line 7 of this Wireshark capture, what TCP operation is being performed?A.
9、Session establishmentB. Segment retransmitC. Data transferD. Session disconnect9.Refer to the exhibit. What two pieces of information can be determined from the output that is shown? (Choose two) A. The local host is using three client sessionsB. The local host is using web sessions to a remote serv
10、erC. The local host is listening for TCP connections using public addressesD. The local host is using well-known port numbers to identify the source portsE. The local host is performing the three-way handshake with 192.168.1.101:103710.What is dynamically selected by the source host when forwarding
11、data? A. destination logical address B. source physical address C. default gateway address D. source port推荐精选11.What are two features of the User Datagram Protocol (UDP)? (Choose two) A. flow control B. low overhead C. connectionless D. connection-oriented E. sequence and acknowledgements12.What mec
12、hanism is used by TCP to provide flow control as segments travel from source to destination? A. sequence numbers B. session establishment C. window size D. acknowledgments13.Which transport layer protocol low overhead and would be used for applications which do not require reliable data delivery? A.
13、TCP B.IP C.UDP D.HTTP E.DNS14.Which information is found in both the TCP and UDP header information? A. sequencing B. flow control C. acknowledgments D. source and destination port15.Which three features allow TCP to reliably and accurately track the transmission of data from source to destination?
14、(Choose three) A. flow control B. urgent pointer C. best effort delivery D. session establishment E. connectionless services F. numbering and sequencing16.During a TCP communication session, if the packets arrive to the destination out of order, what will happen to the original message? A. The packe
15、ts will not be delivered B. The packets will be retransmitted from the source C. The packets will be delivered and reassembled at the destination D. The packets will be delivered and not reassembled at the destination推荐精选17.Which is an important characteristic of UDP? A. acknowledgement of data delivery B. minimal delays in data delivery C. high reliability of data delivery D.
