QUESTION 1Which 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 2Consider the following forwarding table in a router:Prefix145.132.48.0/20146.91.121.0/24145.132.48.0/22145.132.48.0/24EdgeABIDE145.132.56.0/22Suppose the router receives a datagram that is destined for 145.132.50.100. To which edge should it be forwarded?O AO BO DO EQUESTION 3Which 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 beingdropped)?O First-in-first-out (FIFO)O Random selection of a datagramO Round Robin across multiple queuesO Process the datagram with the shortest payload firstQUESTION 4Consider 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 4equally sized subset subnets of size 512 hosts each?O 123.45.24.0/23123.45.25.0/23123.45.26.0/23123.45.27.0/23O 123.45.24.0/23123.45.24.1/23123.45.24.2/23123.45.24.3/23O 123.45.24.0/22123.45.24.2/22123.45.24.4/22123.45.24.6/22O 123.45.24.0/22123.45.24.1/22123.45.24.2/22123.45.24.3/22O 123.45.24.0/23123.45.26.0/23123.45.28.0/23123.45.30.0/23o o

Answer for all mcqs with explanation given below

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.

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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Destination IP-based forwarding is used by the per-router control plane (sometimes called the classical network) to connect with other routers. If messages are forwarded depending on their destinations' IP addresses, what are the boundaries of this approach? Include a description of at least three limitations, preferably with examples. To what extent does Software-Defined Networking (SDN) contribute to solving these problems? The examples will serve as the explanation.
Distance vector's routing table is regularly sent to each active interface. Link status protocol informs other routers of a router's connection state. Two ideal examples for each claim show how the Link state and Distance vector may be utilized in different scenarios.
Each active interface of Distance vector gets frequent transmissions of the whole routing table that Distance vector maintains. The link status protocol broadcasts information about the state of a router's own connections to all other routers in the network. Each statement has two ideal examples that show how the Link state and the Distance vector may be utilized in a number of circumstances.
Distance vector sends its whole routing table to all of its active interfaces on a regular basis. Link status informs all routers in the network on the status of their own links. Two ideal examples for each statement are provided to demonstrate how Link state and Distance vector may be utilized in various scenarios.
as a possible congestion control mechanism in a subnet using virtual circuits internally, a router could refrain from acknowledging a received packet until (1) it knows its last transmission along the virtual circuit was received successfully and (2) it has a free buffer. for simplicity, assume that the routers use a stop-and-wait protocol and that each virtual circuit has one buffer dedicated to it for each direction of traffic. if it takes 7 sec to transmit a packet (data or acknowledgement) and there are n routers on the path, what is the rate at which packets are delivered to the destination host? assume that transmission errors are rare and that the host-router connection is infinitely fast.
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Q.8) In a large autonomous system (AS) with hundreds of routers, a network administrator is tasked with implementing a routing protocol that can provide the best path selection and also dynamically react to network changes. Which protocol would be the most suitable for an internal large-scale network that requires efficient path selection, fast convergence, and the ability to handle a large number of routers from given options? A) RIP (Routing Information Protocol) B) OSPF (Open Shortest Path First) C) BGP (Border Gateway Protocol) D) EIGRP (Enhanced Interior Gateway Routing Protocol)
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