Cisco National Chp. 9 Quiz
What are three responsibilities of the transport layer? (Choose three.)
- meeting the reliability requirements of applications, if any - multiplexing multiple communication streams from many users or applications on the same network - identifying the applications and services on the client and server that should handle transmitted data
A client application needs to terminate a TCP communication session with a server. Place the termination process steps in the order that they will occur. (Not all options are used.)
1. client sends fin 2. server sends ack 3. server sends fin 4. client sends ack
Which number or set of numbers represents a socket?
192.168.1.1:80
Which two services or protocols use the preferred UDP protocol for fast transmission and low overhead? (Choose two)
DNS, VoIP
Which three fields are used in a UDP segment header? (Choose three.)
Length, Source Port, Checksum
Which transport layer feature is used to guarantee session establishment?
TCP 3-way handshake
Which action is performed by a client when establishing communication with a server via the use of UDP at the transport layer?
The client randomly selects a source port number.
Network congestion has resulted in the source learning of the loss of TCP segments that were sent to the destination. What is one way that the TCP protocol addresses this?
The source decreases the amount of data that it transmits before it receives an acknowledgement from the destination.
What is an advantage of UDP over TCP?
UDP communication requires less overhead
What type of applications are best suited for using UDP?
applications that are sensitive to delay
Refer to the exhibit. What does the value of the window size specify?
the amount of data that can be sent before an acknowledgment is required
What is the purpose of using a source port number in a TCP communication?
to keep track of multiple conversations between devices
What is the purpose of the TCP sliding window?
to request that a source decrease the rate at which it transmits data
What OSI layer is responsible for establishing a temporary communication session between two applications and ensuring that transmitted data can be reassembled in proper sequence?
transport
