1. Switching and Routing Technology (EMCS-674)
Class Test -1
1. The set of rules used by network for communication is called -
(a) Interface (b) Protocol(c) Network S/W
2. Network speed does not depend on –
(a) bit rate b) latency c) data bus
3. “A network should operate in spite of failures or lost data”–this network protocol is called –
(a) Scalability (b) Determinism (c) Robustness
4. using …………network, a continuous stream of bytes can be sent
(a) Circuit switched (b) Packet switched (c) Message Switched
5. …….. Creates reliable data transfer, offers a logical stream of data.
(a) HTTP ( b) TCP (c) IP
6. The TCP/IP reference model consists of …………software layer.(a) 5 (b) 4 (c) 3
7. In TCP/IP………..layer handles end-to-end communication.
(a) Transport (b) Internet (c) Application
8. ………..Layer handles communication between machines.
(a) Transport (b) Internet (c) Application
9. Any connection between two or more network is called
(a) Intranet (b) Internet (c) WAN
10. ARPANET is a–
(a) Packet switched Network(b) Circuit Switched Network (c) Datagram Network
11. Routers are typically network slowdowns: (a) True(b) False
12. TCP/IP programming was incorporated into(a) UNIX OS(b) LINUX OS (c) DOS
13. It is now possible for anyone to write internet application: (a) True(b) False
14. …….. is the framework for the Internet. (a) Milnet(b) ARPANET (c) TCP/IP

2. 15. Network don’t use standardize H/W –(a) True (b) False
16. The time to take a bit to be received by the destination is called –
(a) Bit rate (b) Bandwidth (c) Latency
17. For load balancing the best network is –
(a) Circuit switching (b) Virtual circuit packet switch (c) Datagrams packet
18. Infrequent messaging is suitable for connection-based network: (a) True (b) False
19. In ……. network, waste a lot of time routing messages to the same destination.
(a) Circuit Switching (b) Virtual Circuit Packet Switching (c) Datagram Packet Switching
20. Name three problems dealing with the data link layer
(a) Flow control……(b) Error checking…………. (c) Group of ………..
Class Test –2
Find the most appropriate answers:
1. In most networks a single medium is shared by all of a network’s hosts. (a) True (b) False
2. In shared medium, collision causes the message to be combinedandscrambled
3. The contention network does not experience collisions (a) True (b) False
4. CSMA / CDstands for Carrier Sense Multiple Access / Collision Detection
5. After detected carrier in a shared medium and determining there is no signal, collisions can still
occur: (a) True (b) False
6. Data Link Layer deals with: (a) Network Address (b) IP Address (c) MAC Address
7. Data Link Layer addresses are only used on
(a) Single Network (b) Multiple Network (c) Internet
8. control is limiting the packet rate between source and destination on the same LAN.
(a)Flow (b) Error (c) Congestion
9. In sliding window techniques destination acknowledges a frame by sending acknowledgement
with sequence number of -
(a) Last frame received (b) Next frame expected (c) each frame received
10. Reliability at the data link layer is usually unnecessary:(a) True (b) False
11. Which of the following is not in connection with error control methods:
(a) Checksum (b) Parity (c) Multiplexing
12. In a bridge frame handling is done using _________ method
(a) Store-and-Forward (b) Cut-through (c) Both
13. Which of the following is not in connection with layer 2 switch?
(a) Frame handling is done in H/W (b) Multiple data path (c) Forward one frame at a time
14. A big network is divided in to sub-networks which are connected by –
(a) Routers (b) Bridges (c) Layer-2 Switch

3. 15. ____________________maintains and exchanges routing data with routers:
(a) Switching Fabric (b) Routing Processor (c) CPU
16. The network of connections between network interfaces is called:
(a) Input / Output interface (b) Switching fabric (c) I/O buffers
17. Each network interface would always have its own routing processor (a) True (b) False
18. The banks of very high speed memory for packet queuing prior to processing one called (a) Input
Buffer (b) Output buffer (c) Router’s memory
19. The routing processor used the forwarding table data to configure the _______________to
forward the packet to the correct output port
(a) Input buffer (b) Output buffer (c) Switching fabric
20. For which type for switching fabric the following statement is true: “If any bus fails, alternate
path exist so that forwarding can continue”
(a) In-memory switching fabric (b) Crossbar switching fabric (c) Bus-based switching fabric
Class test –3
1.
a. TCP/IP is the framework for internet –explain
b. What are the difference between hub, layer 2 and 3 switch, with diagram
c. What sliding window tech, explain sliding window protocol with diagram
2.
a. How can you define error control? Suppose a message m=1011. Find transmitted code
and correct the code where there is an error using hamming method with even parity
b. Explain components of a router with diagram
Class Test –4
1. Discuss the implementation of connection oriented / connection-less routing with example
2. Discuss shortest path algorithm with example. Example should include step-by-step process of finding
the shortest.
3. What is distance vector routing? Give an example and find the new table.
4. What is Hierarchical routing? Give an example with 5 regions.
Class Test –5
Find the appropriate answers:
1. In fixed routing the link cost is calculated based on dynamic data –(a) True (b) False
2. In IRP if multiple routers attached to network, host does not need routing table, (a) True (b) False
3. In an AS routers and networks are always connected. (a) True (b) False
4. Which of the following is not connected with IRP:
(a) Passes routing information between routers within AS
(b) Need to be implemented outside AS
(c) Need minimum information from other connected AS

4. 5. Rapid oscillation in routing caused (a) fluttering (b) looping (c) count-to-infinite problem
6. ERP deals with details within target AS. (a) true (b) false
7. ………………………….max occur when changes in connectivity not propagated fast enough to all other
routers. (a) fluttering (b) looping (c) count-to-infinite problem
8. IRP needs maximum information from other connected AS. (a) true (b) false
9. Adapting routing can aid …….. control (a) congestion (b) flow (c) error
10. Adaptive routing depends on information collected on one place and used in same place. (a) true
(b) false
Broad Questions:
11. How can you define Autonomous Systems (AS)?
12. Define different types of fragmentation with example. Suppose a 23 byte packet is to be
transmitted through a network of maximum packet length = 4 byte. The elementary fragment size
is 1 byte. Show the segment numbering of the above packet no-501