Section 1
1. Explain the need of computer networking. Discuss its applications also
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2. Explain difference between LAN MAN and WAN.
3. What do you mean by network topology ? Discuss different network topologies along with their relative merits and demerits.
4. Match the following to one or more layers of the OSI model”
a. Communicates directly with user’s application program.
b. Error correction and retransmission
c. Mechanical, electrical, and functional interface
d. Responsibility for carrying frames between adjacent nodes.
5. What do you mean by network protocol? Discuss the various elements and functions of protocols?
Section 2
1. We have a baseband channel with a 2-MHz bandwidth. What is the data rate for this channel if we use one of the following line coding schemes?
a. NRZ-L
b. Manchester
2. Compare and contrast Flow control and Error Control
3. Discuss the window size for the following protocols (i) Go back n ARQ (ii) Selective repeat
CASE STUDY
ABC institution wants to setup lab in the building with internet facility. The building is spanned accross1-2 km distance and has 4 floors. Labs are to be build on each floor and server room in the basement of the building
Suggest
1. Network plan
2. Topology and justify your selection.
3. Transmission media used, justify your selection
4. hardware devices used with justification
Section 3
1. Connectivity is a concept related to
a. transmitting information, either by computer or by phone
b. the interconnections within a computer
c. using computer networks to link people and resources
d. being in an active session with your computer
2. One of the most dramatic changes in connectivity and communications in the past five years or so has been ____.
a. mobile or wireless telephones
b. public and private discussion
c. satellite uplinks
d. running programs on remote computers
3. The four basic elements of any communication system include
a. peer-to-peer, videoconferencing, online photo-conferencing, net optical
b. sending and receiving devices, communication channel, connection device, and data transmission specifications
c. telephone lines, coaxial cables, fiber-optics cables, and communication channel
d. software, hardware, communication channel, network
4. The transmission medium that carries the message is referred to as the
a. send and receive device
b. communication channel
c. protocol
d. gateways
5.. Data is transmitted using light through a ____ cable.
a. twisted pair
b. fiber-optic
c. coaxial
d. microwave
6. Which physical connection is the fastest?
a. twisted pair
b. coaxial cable
c. fiber-optics
d. microwaves
7. Which of the following connection methods would not be used to connect devices between two different offices?
a. twisted pairs
b. fiber-optics
c. coaxial cables
d. infrared
8. Most Web-enabled devices follow a standard known as
a. FireWire
b. Bluetooth
c. TCP/IP
d. Wi-FI
9. This wireless standard is widely used to connect computers to each other and to the Internet.
a. 802.11
b. RJ45
c. Blueband
d. Broadband
10. Bluetooth is a type of radio wave information transmission system that is good for about
a. 30 feet
b. 30 yards
c. 30 miles
d. 300 miles
11. The rules for exchanging data between computers are called
a. interconnections
b. synchronous packages
c. protocols
d. data transmission synchronization
12. Each computer on the Internet has a unique numeric address called a(n)
a. domain address
b. protocol address
c. IP address
d. Web address
13. ____ is the process of breaking down information sent or transmitted across the Internet into small parts called packets.
a. protocol
b. bandwidth
c. reformatting
d. identification
14. Two or more computers connected so that they can communicate with each other and share information is called a
a. satellite
b. protocol
c. broadcast
d. network
15. Any device that is connected to a network is called a
a. client
b. node
c. server
d. manager
16. In cyclic redundancy checking, what is the CRC?
a. The divisor
b. The quotient
c. The dividend
d. The remainder
17. In _______, a table associating a logical address with a physical address is updated manually.
a. static mapping
b. dynamic mapping
c. physical mapping
d. none of the above
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18. _______ is a dynamic mapping protocol in which a physical address is found for a given logical address.
a. ARP
b. RARP
c. both a and b
d. none of the above
19. Routing between autonomous systems is referred to as ____________.
a. interdomain routing
b. intradomain routing
c. both a and b
d. none of the above
20. In _______ routing, the least cost route between any two nodes is the route with the minimum distance.
a. path vector
b. distance vector
c. link state
d. none of the above
21. In ________, each node maintains a vector (table) of minimum distances to every node.
a. path vector
b. distance vector
c. link state
d. none of the above
22. In distance vector routing, each node periodically shares its routing table with _________ and whenever there is a change.
a. every other node
b. its immediate neighbors
c. one neighbor
d. none of the above
23. The Routing Information Protocol (RIP) is an intradomain routing based on _________ routing.
a. distance vector
b. link state
c. path vector
d. none of the above
24. The metric used by _______ is the hop count.
a. OSPF
b. RIP
c. BGP
d. none of the above
25. The _________ routing uses the Dijkstra algorithm to build a routing table.
a. distance vector
b. link state
c. path vector
d. none of the above
26. The Open Shortest Path First (OSPF) protocol is an intradomain routing protocol based on _______ routing.
a. distance vector
b. link state
c. path vector
d. none of the above
27. The _______ protocol allows the administrator to assign a cost, called the metric, to each route.
a. OSPF
b. RIP
c. BGP
d. none of the above
28. In OSPF, a ________ link connects two routers without any other host or router in between.
a. point-to-point
b. transient
c. stub
d. none of the above
29. In OSPF, a _______ link is a network with several routers attached to it.
a. point-to-point
b. transient
c. stub
d. none of the above
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30. In OSPF, a ________ link is a network is connected to only one router.
a. point-to-point
b. transient
c. stub
d. none of the above
31. In OSPF, when the link between two routers is broken, the administration may create a _________ link between them using a longer path that probably goes through several routers.
a. point-to-point
b. transient
c. stub
d. none of the above
32. In ________ routing, we assume that there is one node (or more) in each autonomous system that acts on behalf of the entire autonomous system.
a. distant vector
b. path vector
c. link state
d. none of the above
33. ___________ is an interdomain routing protocol using path vector routing.
a. BGP
b. RIP
c. OSPF
d. none of the above
34. To create a neighborhood relationship, a router running BGP sends an ________ message.
a. open
b. update
c. keepalive
d. none of the above
35. An area is _______.
a. part of an AS
b. composed of at least two ASs
c. another term for an AS
d. none of the above
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36. A one-to-all communication between one source and all hosts on a network is classified as a _______ communication.
a. unicast
b. multicast
c. broadcast
d. none of the above
37. A one-to-many communication between one source and a specific group of hosts is classified as a _______ communication.
a. unicast
b. multicast
c. broadcast
d. none of the above
38. UDP and TCP are both _______ layer protocols.
a. data link
b. network
c. transport
d. none of the above
39. Which of the following functions does UDP perform?
a. process-to-process communication
b. host-to-host communication
c. end-to-end reliable data delivery
d. none of the above
40. When the IP layer of a receiving host receives a datagram, _______.
a. delivery is complete
b. a transport layer protocol takes over
c. a header is added
d. none of the above
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