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1 What three pieces of information does the transport layer use to manage the communication of separate data streams between hosts? (Choose three.)(salah 1)
 
 port numbers 
 *checksum values 
 authentication keys 
 *sequence numbers 
 encryption algorithms  
 *acknowledgment numbers 
 

 

2 TCP is referred to as connection-oriented. What does this mean?
 
 TCP uses only LAN connections. 
 TCP requires devices to be directly connected. 
 *TCP negotiates a session for data transfer between hosts. 
 TCP reassembles the data steams in the order that it is received. 
 

 

3 FTP provides a reliable, connection-oriented service for transferring of files. Which transport layer protocol is used for data transfer when this service is being used?
 
 TFTP 
 *TCP 
 DNS 
 IP 
 UDP 
 

 

4 An application is using a protocol that exchanges data without using windowing or flow control and must rely on higher layer protocols to transmit data. Which protocol and transfer method are being used?
 
 UDP, connection-oriented 
 *UDP, connectionless 
 TCP, connection-oriented 
 TCP, connectionless 
 

 

5 Which Application layer protocol is widely used to support resolving host names to IP addresses?
 
 FTP 
 SMTP 
 SNMP 
 *DNS 
 HTTP 
 WWW 
 

 

6 Which protocol is used to transfer files from computer to computer but is considered connectionless?
 
 FTP 
 *TFTP 
 SNMP 
 TCP 
 DHCP 
 

 

7 What is the purpose of TCP/UDP port numbers?
 
 indicate the beginning of a three-way handshake 
 reassemble the segments into the correct order 
 identify the number of data packets that may be sent without acknowledgment 
 *track different conversations crossing the network at the same time 
 

 

8 What are the features of the User Datagram Protocol (UDP). (Choose three.)
 
 *no guaranteed delivery of datagrams 
 connection-oriented 
 provides reliable full-duplex data transmission 
 *reliability provided by the application layer 
 *connectionless 
 utilizes sliding windowing techniques 
 

 

9 Which protocol is used by e-mail servers to communicate with each other?
 
 FTP 
 HTTP 
 TFTP 
 *SMTP 
 POP 
 SNMP 
 

 

10 Which application layer protocol allows network devices to exchange management information?
 
 SMTP 
 *SNMP 
 FTP 
 TFTP 
 EIGRP 
 

 

11 Which layer of the OSI model can provide a connection-oriented, reliable data transfer between two hosts?
 
 Application 
 Presentation 
 Session 
 *Transport 
 

 

12 When the receiving workstation detects an error in the data it has received, it does not acknowledge receipt of the data. The source workstation retransmits the unacknowledged data. Which layer of the OSI model supports this process of retransmission?
 
 network 
 application 
 session 
 *transport 
 

 

13 Which of the following are primary duties of the OSI transport layer? (Choose two.) (salah semua)
 
 path determination 
 *end-to-end connectivity 
 *flow control  
 *security control 
 data representation 
 encryption of data 
 

 

14 Which port numbers are commonly assigned for FTP use? (Choose two.)
 
 19 
 *20 
 *21 
 22 
 

 

15 What does the http portion of the URL http://www.cisco.com/edu/ communicate to a web browser?
 
 The web browser needs to locate the www server. 
 The address is located on a site whose name is http. 
 *The web browser is notified as to which protocol to use. 
 The http portion represents the type of web browser that needs to be used.