Advanced Computer Networks Quiz 3

1.Between three mobility choices: i) Etherent        ii) IP Routing        iii) Mobile IP

Which mobility choice provides less efficient communication when node moves?

Select one:
a. Mobile IP{correct}
b. IP Routing and Mobile IP Both
c. IP Routing
d. Mobile IP and Ethernet Both

2.Which of the following is not an appropriate objective for Data Center Networks?
Select one:
a. Assigning servers to service should be dependent of network topology{correct}
b. Maximum rate of server to server traffic flow should be limited only by capacity on network cards
c. Traffic of one service should not be affected by traffic of other services
d. Capapble to assign any service to any server

3.An extra DNS lookup is required in-
Select one:
a. Cluster based Routing
b. Anycast Routing
c. HTTP redirection{correct}
d. DNS redirection

4.Which of the following protocols can be used as south bound protocol to extract topology information for a SDN controller?

Select one or more:
{correct} choose all
a. LISP{correct}
b. BGP{correct}
c. TCP
d. SNMP{correct}

5.Which of the following is TRUE for the snoopy protocol approach used for improving TCP performance over wireless links?
Select one:
a. It voilates end to end semantics of Internet design
b. It increases the possibility of the adverse interactions between protocol layers
c. It compltely shields the TCP sender from the wireless losses{correct}
d. TCP protocol processing at base more complex

6.Consider the argument: "The link layer protocols can shield the TCP sender from wireless losses by local retransmissions."
Select one:
a. FALSE
b. TRUE{correct}
c. Can't Say

7.Which of the following service function does not belong to the basic service function category for the Open Daylight controller?

Select one:
a. VTN Manager{correct}
b. Host-Tracker
c. Topology Manager
d. Forwarding Manager

8.The use of PEPs has not been encourged to integrate challenged networks into the existing TCP/IP architecture because of
Select one or more:
a. they can not handle the mobility
b. they store state of connection which is nessasary for the connectin operation{correct}
c. Use of these violates the fate sharing principle{correct}
d. they can pose challenge for end to end security mechanism implemented below transport layer{correct}

9.Which of the following is better in terms of number of messages (consider average case) required per lookup?
Select one:
a. Gnutella
b. Chord
c. Kazaa
d. Napster{correct}


10.Consider A, B, C, and D are wireless nodes shown in Figure.

Assume there is an ongoing transmission from node B to A. Can node C initiate a transmission to node D. Assume nodes are following MACAW (Multiple Access with Collision Avoidance for Wireless networks) protocol for media access? The signal interference range is shown with ovals.

Select one:
a. No
b. Yes, with assuming that the nodes are synchronized with respect to packet size and data rate.{correct}
c. Yes