Question 21

TCP uses the sliding window concept. Why?

		a. as a flow control mechanism
		b. as a network congestion mechanism
		c. as a way to guarantee proper packet sequencing and assured delivery
		d. all of the above

10 points

Question 22

Select the correct statement(s) regarding TCP and UDP transport layer protocols.

		a. The combination of port assignment with IP address is termed a socket
		b. TCP is a connection-oriented protocol, which means that a three-way handshake is required between source and destination prior to data transmission
		c. UDP is a connectionless protocol, therefore correct data sequencing and flow control are not guaranteed
		d. All of the above are correct

10 points

Question 23

Since UDP is a connectionless protocol, source and destination ports are not needed within the UDP header.

True

False

10 points

Question 24

Interior Gateway Protocols (IGP) enable routing tables to be shared and updated between routers within an autonomous network. Routing tables are used to determine optimal paths through an IP network.

True

False

Question 25

Border Gateway Protocols (BGP) are used to exchange routing information and cost metrics between routers in separate autonomous IP networks (i.e., non-autonomous networks).

True

False

10 points

Question 26

In an MPLS network, a routing label is affixed to the front of the IP header in order to provide quality-of-service information. This enables the prioritization of packets through an MPLS network.

True

False