QUESTION 1 Which of the following is not true regarding a software defined networking (SDN) based control pane? O The remote controller will utilize a distributed routing algorithm such a Bellman-Ford in order to compute optimal paths. O The remote controller maintains link-state information across all routers within its scope. The remote controller relieves routers of the responsibility of making routing decisions themselves. The remote controller is responsible for calculating a forwarding table for every router in its scope.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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QUESTION 1
Which of the following is not true regarding a software defined networking (SDN) based control pane?
O The remote controller will utilize a distributed routing algorithm such a Bellman-Ford in order to compute optimal paths.
The remote controller maintains link-state information across all routers within its scope.
O The remote controller relieves routers of the responsibility of making routing decisions themselves.
The remote controller is responsible for calculating a forwarding table for every router in its scope.
QUESTION 2
Consider the following forwarding table in a router:
Prefix
145.132.48.0/20
146.91.121.0/24
145.132.48.0/22
145.132.48.0/24
Edge
A
B
ID
E
145.132.56.0/22
Suppose the router receives a datagram that is destined for 145.132.50.100. To which edge should it be forwarded?
O A
O B
O D
O E
QUESTION 3
Which of the following router queuing policies might result in a situation where it is possible for a datagram to get stuck in the queue indefinitely (without being
dropped)?
O First-in-first-out (FIFO)
O Random selection of a datagram
O Round Robin across multiple queues
O Process the datagram with the shortest payload first
QUESTION 4
Consider the subnet 123.45.24.0/21, which can support up to 2048 hosts. Which of the following sets of 4 subnets represent a partitioning of this subnet into 4
equally sized subset subnets of size 512 hosts each?
O 123.45.24.0/23
123.45.25.0/23
123.45.26.0/23
123.45.27.0/23
O 123.45.24.0/23
123.45.24.1/23
123.45.24.2/23
123.45.24.3/23
O 123.45.24.0/22
123.45.24.2/22
123.45.24.4/22
123.45.24.6/22
O 123.45.24.0/22
123.45.24.1/22
123.45.24.2/22
123.45.24.3/22
O 123.45.24.0/23
123.45.26.0/23
123.45.28.0/23
123.45.30.0/23
o o
Transcribed Image Text:QUESTION 1 Which of the following is not true regarding a software defined networking (SDN) based control pane? O The remote controller will utilize a distributed routing algorithm such a Bellman-Ford in order to compute optimal paths. The remote controller maintains link-state information across all routers within its scope. O The remote controller relieves routers of the responsibility of making routing decisions themselves. The remote controller is responsible for calculating a forwarding table for every router in its scope. QUESTION 2 Consider the following forwarding table in a router: Prefix 145.132.48.0/20 146.91.121.0/24 145.132.48.0/22 145.132.48.0/24 Edge A B ID E 145.132.56.0/22 Suppose the router receives a datagram that is destined for 145.132.50.100. To which edge should it be forwarded? O A O B O D O E QUESTION 3 Which of the following router queuing policies might result in a situation where it is possible for a datagram to get stuck in the queue indefinitely (without being dropped)? O First-in-first-out (FIFO) O Random selection of a datagram O Round Robin across multiple queues O Process the datagram with the shortest payload first QUESTION 4 Consider the subnet 123.45.24.0/21, which can support up to 2048 hosts. Which of the following sets of 4 subnets represent a partitioning of this subnet into 4 equally sized subset subnets of size 512 hosts each? O 123.45.24.0/23 123.45.25.0/23 123.45.26.0/23 123.45.27.0/23 O 123.45.24.0/23 123.45.24.1/23 123.45.24.2/23 123.45.24.3/23 O 123.45.24.0/22 123.45.24.2/22 123.45.24.4/22 123.45.24.6/22 O 123.45.24.0/22 123.45.24.1/22 123.45.24.2/22 123.45.24.3/22 O 123.45.24.0/23 123.45.26.0/23 123.45.28.0/23 123.45.30.0/23 o o
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