Introduction to Computer Networks
I. Each Question Carries 1 Mark.
1. A ___________ is a group of various components connected together in such a way that, it is possible to distribute or collect information over the entire group.
a) Network b) Web c) Spider net d) Net
2. Distribution or exchange of information is very important for any group activity to function effectively and efficiently. _____________ is the best way to achieve this.
a) Network b) Client/Server c) Sharing d) Grouping
3. Computer networks in addition to exchange of information, can carry out another important function - __________________.
a) Distributing hardware b) Sharing of Resources
c) Sharing CPU d) None
4. We can connect more than one computer in the network without Hard Disk and Share the single Hard disk by using ______________.
a) Net b) LAN c) Disk Sharing d) None
5. Computer ___________ provide many services besides travel reservations and financial transactions.
a) Connectivity b) Networks c) CPU sharing d) None
6. “Business information is useful only when it is communicated between human beings”
a) True b) False c) Can’t Say d) None
7. _____________ were not designed with huge capacity in mind, and there were now thousands of these machines in the market place representing billions of dollars in business assets.
a) Desktop computer b) Mainframe Computer
c) Mini Computers d) None
8. _____________ can exist within a single room, entire building, a city, a country, the world.
a) Centralized Computing b) Computer Network
c) File Sharing Computing d) None
9. ______________ is a network of networks, that access each other at will, or at the whim of the individual user who contact them any time over the telephone lines.
a) Network b) Sharing c) Internet d) None
10. User can share __________ resources and information, and they can work together on projects that require simultaneous computing or data processing operation, co-ordination and communication.
a) Network b) Sharing c) Internet d) None
11. The greatest advantage of the __________ is that every user is independently doing his work but still he has access to all relevant information from his team all the time.
a) Network b) Sharing c) Internet d) None
12. The network requires some software to control all the information transfer activity on the Network, like the traffic police to control the traffic. The task is handled by the software called____________.
a) Internet b) OS c) Network d) NOS
13. ________ are the faster computes to run various software’s, store and process information and to provide a human interface for the users to be able to use the networked computers.
a) Nodes b) Servers c) NIC d) Peer
14. _________ are the computers on the network which are provided to the users to carry out their tasks using the network.
a) Nodes b) Servers c) NIC d) Peer
15. _________ is card used to connect the cables to the computers. These cards help the computer to transfer the data at a faster rate and in the form of packets.
a) Nodes b) Servers c) NIC d) Peer
16. The __________ stores and distributes files on request, to other computers connected to it on the network.
a) File Server b) Database Server c) Message Server d) None
17. The ____________ software running on both the servers and nodes handle the communication, creating and illusion that the server hard disk is another drive local to the node.
a) Internet b) OS c) Network d) NOS
18. Monitor, keyboard ad mouse are not so important as most of the time the _________ operates as an unattended machine.
a) Nodes b) Servers c) NIC d) Peer
19. When computers came to the market first, the idea was _________________.
a) Share the system b) One user one computer
c) Utilized for Network d) None
20. When a single computer cannot handle all the information ____________ come into existence.
a) WAN b) MAN c) LAN d) None
21. The full form of LAN is ______________.
a) Local Area Net b) Local authorized network
c) Local Area Network d) None
22. The full form of MAN is ______________.
a) Metro area network b) Metropolitan area network
c) Metro rise area network d) None
23. The full form of WAN is ______________.
a) World wise area network b) Wide area network
c) World area network d) None
24. State True or False
“It is not possible to share a CD-ROM in a network”
a) True b) False c) Can’t say d) None
25. State True or False
“All the computers need to be networked”.
a) True b) False c) Can’t say d) None
I. Answers- 1 Mark
1. A 2. A 3. B 4. B 5. B 6. A
7. A 8. B 9. C 10. A 11. A 12. D
13. B 14. A 15. C 16. A 17. D 18. B
19. B 20. C 21. C 22. B 23. B 24. A
25. B
II. Each Question Carries 2 Marks.
The network requires some software to control all the information transfer activity on the ___________, like the traffic police to control the traffic. The task is handled by the software called____________.
a) Internet, NOS b) NOS, OS
c) Network, NOS d) Computer, OS
II. Answers- 2 Mark
1. C.
III. Each Questions carries 4 Marks.
1. Computer networks provide many services besides travel reservations and financial transactions, but these applications show two important features of computer networks.
i) They provide shared access to information, such as airline flight status or
account balances.
ii) They permit the movement of data, such as flight updates, or financial
transfers.
iii) They provide direct access to information from each computer.
iv) They permit the movement of data in all the computers worldwide.
a) i, and iii b) ii, and iii c) i, and ii d) i, and iv
2. There are two main reasons to go for networking.
i) The individual people may not need large volumes of hard disk space, as they
can share single copies of common file and applications rather than the network
to share a printer among all the users.
ii) Overhead costs associated with use of computers. If you use network to share a
single hard disk, you centralize the administration of the information on the
disk. With a network, people can give files of information to each other.
iii) The individual people may need large volumes of hard disk space, as they
can’t share single copies.
iv) You use network to share a single hard disk, you centralize the administration
of the information on the disk. With a network, people can’t give files of
information to each other.
a) i, and iii b) ii, and iii c) i, and ii d) i, and iv
3. A Networked computers can do many things, which a stand-alone computer cannot do.
i) Share a single copy of a file among all the users, even simultaneously.
ii) Transfer files from computer to computer or from one computer to the central
hard disk on the server.
iii) Share applications over the entire network, thus reducing the cost of
purchasing the multiple copies. A multi-user license costs much less than
buying a stand-alone license for each user.
iv) Share resources like printers, hard disks, CD-ROM drives, modems, fax
machines etc.
v) Use e-mail for internal communication, inter office notes etc. creating an
almost paper less office.
a) i, ii, iv and v b) ii, iii, iv and v
c) iii, iv and v d) All of the above
4. A network is a combination of different components. The most essential components of a simple network are:
i) Servers ii) Nodes iii) LAN Cables iv) NOS
v) NIC
a) All of the above b) ii, iii, iv and v
c) iii, iv and v d) i, ii, iv and v
5. While selecting a computer as a server some of the important factors to be considered are listed below.
i) The speed of the computer
ii) The size, type and the capacity (Space) of the hard disk.
iii) Amount of RAM
iv) Type of Network interface card
a) All of the above b) i, iii, and iv
c) ii, iii and iv d) i, ii, and iii
6. The advantages of computer networks are
i) Network allow more efficient management of resources
ii) Networks help keep information reliable and up-to-date.
iii) Networks help up data sharing.
iv) Networks allow workgroups to communicate more efficiently.
v) Networks help businesses service their client more efficiently
a) All of the above b) ii, iii, iv and v
c) iii, iv and v d) i, ii, iv and v
III. Answers- 4 Mark
1.C 2. C 3. D 4. A 5. A 6. A
UNIT – 2
Network Topologies
I. Each Question Carries 1 Mark.
1. ___________ is a term used to describe the logical way in which computers are connected in a network.
a) Topology b) Topography c) Graphology d) None
2. __________ topology requires a central controller or hub.
a) Mesh b) Star c) Bus d) Ring
3. __________ topology requires a multipoint connections.
a) Mesh b) Star c) Bus d) Ring
4. A tree topology is a variation of a ___________ topology.
a) Mesh b) Star c) Bus d) Ring
5. In a __________ topology, if there are n devices in a network, each device has n –1 ports for cables.
a) Mesh b) Star c) Bus d) Ring
6. ___________ topology features a point-to-point line configuration.
a) Mesh b) Star c) Bus d) Ring
7. In _____________ topology each node is connected to a single, centrally located file server.
a) Mesh b) Star c) Bus d) Ring
8. _____________ is the most difficult topology to implement as the number of nodes increase.
a) Mesh b) Star c) Bus d) Ring
9. In ____________ kind of networks transmitting and receiving equipments are geographically distributed.
a) LAN b) MAN c) WAN d) None
10. The goal of _____________ is to find the most economical and efficient way to connects all the users to the network resources while providing adequate capacity to handle user demands, maintain system reliability and minimize delay.
a) Topology b) Topography c) Graphology d) None
11. ____________ is the most popular topology. Here a single main cable connects each node, in what amounts to a single line of computers accessing it from end to end.
a) Mesh b) Star c) Bus d) Ring
12. In ___________ topology each node passes the information along to the next, until it arrives at the intended destination. Performance can be faster on this system because each portion of the cabling system is handling only the data flow between two machines.
a) Mesh b) Star c) Bus d) Ring
13. ___________ type of topology can be found in peer-to-peer network, in which each machine manages both information processing and the distribution of data files.
a) Mesh b) Star c) Bus d) Ring
14. The _____________ topology is having minimum data traffic along the cables (node to server only), for optimum performance.
a) Mesh b) Star c) Bus d) Ring
I. Answers- 1 Mark
1. A 2. B 3. C 4. C 5. A 6. D 7. B 8. A 9. C 10. A 11. C 12. D 13. D 14. B
UNIT – 3
The LAN
I. Each Question Carries 1 Mark.
1. A __________ is usually privately owned and links the devices in a single office, building, or campus.
a) LAN b) MAN c) WAN d) None
2. A __________ is so called, mainly because the network is confined to a specific area which is called the “Local Area”
a) LAN b) MAN c) WAN d) None
3. People connected to ___________ can share printer, CD-ROM drive, a modem or even computer compatible fax machine.
a) LAN b) MAN c) WAN d) None
4. LAN Cables, also called the ___________ media is the lifeline of a network. All the communication between the servers and takes place over this media.
a) Network b) Media Access c) Ethernet d) Internet
5. The __________ has a greater degree of noise immunity and is quite strong.
a) Thin Coax b) thick coax c) Ethernet d) UTP
6. ______________ of cable is just what is name implies: Insulated wires with a minimum number of twists per foot. Twisting the wires reduces the electrical interference.
a) Shielded Twisted pair b) Unshielded Twisted pair c) Coaxial d) Fiber optics
7. _______________ twisted pair is very familiar type of cable. It is often used as the telephone cable.
a) Shielded Twisted pair b) Unshielded Twisted pair c) Coaxial d) Fiber optics
8. _____________ cables comes in variety of grades called level 5, level 4 and level 3 offering better performance than an ordinary telephone cable.
a) Shielded Twisted pair b) Unshielded Twisted pair c) Coaxial d) Fiber optics
9. _____________ fiber optic cable is more expensive, but it is invaluable for situations where large amount of interference is present.
a) Shielded Twisted pair b) Unshielded Twisted pair c) Coaxial d) Fiber optics
10. ____________ cable is often used in inter-building applications to insulate networking equipment form electrical damage caused by lightning because it does not conduct electricity.
a) Shielded Twisted pair b) Unshielded Twisted pair c) Coaxial d) Fiber optics
11. ______________ is the most popular LAN technology is use today covering more than 85% of the network.
a) Network b) Media Access c) Ethernet d) Internet
12. IEEE stands for –
a) Institute of Electrical and Electronic Engineers
b) International of Electrical and Electronic Engineers
c) International Electrical and Electronic Engineers association
d) None
13. Each Computer on the Ethernet Network, also known as a ___________, operates independently of all other nodes.
a) Client b) Node c) Terminal d) Workstation
14. The set of rules, which ensure data transmission on Ethernet, are called Medium Access Control mechanism. The medium access control mechanism is based on a system called _________________.
a) CSMA/CD b) CSMA/CA c) Internet d) None
15. ___________ uses a physical star topology.
a) 100Base5 b) 10Base2 c) 10Base-T d) None
16. 10Base2 and 10Base5 have different _____________.
a) Single band type b) Fields on the 803.3 frames
c) Maximum segment lengths d) Maximum data rates
17. Which LAN has the highest data rate?
a) 10Base5 b) 10Base-T
c) Twisted-pair Token Ring d) FDDI
18. The ____________ defines what operations and implementation. A service related to an interface between two layers, with the lower layer being the service provider and the upper layer being the service user.
a) Protocol b) Service d) LAN d) Internet
19. A ____________ is set of rules governing the format and meaning of the frames, packets or the information that are exchanged by the peer entities within a layer.
a) Protocol b) Service d) LAN d) Internet
I. Answers- 1 Mark
1. A 2. A 3. A 4. C 5. A 6. B
7. B 8. B 9. D 10. D 11. C 12. A
13. B 14. A 15. B 16. A 17. D 18. B
19. A
II. Each Question Carries 2 Mark.
1. 10Base2 uses __________ cable, while 10Base5 uses ______________.
a) Thick coax, Thin Coax b) Twisted-pair, thick coaxial
c) Thin Coax, Thick Coax d) Fiber optic, thin coaxial
II. Answers- 2 Mark
1. C
III. Each Question Carries 4 Marks.
1. There are four major types of cables in use today:
i) Thick coax 10Base5
ii) Thin coax 10base5
iii) Unshielded Twisted Pair UTP 10Base-T
iv) Fiber optic 10Base-FL
v) Shielded Twisted Pair 10Base200-T
a) All of the above b) i, ii, iii, and iv
c) ii, iii, iv, and v d) i, ii, iv, and v
2. There are four major types of cables in use today. Match them with their connector
A B
i) Thick coax 10Base5 a) AUI
ii) Thin coax 10base5 b) BNC
iii) Unshielded Twisted Pair UTP 10Base-T c) RJ45
iv) Fiber optic 10Base-FL d) SC or ST type
a) i-a, ii-b, iii-c, iv-d b) i-c, ii-b, iii-d, iv-a
c) i-a, ii-c, iii-b, iv-d d) i-b, ii-c, iii-a, iv-d
3. There are various type of technologies in use today for networking:
i) Token ring Ethernet
ii) Fast Ethernet
iii) Fiber Distributed Data Interface
iv) Asynchronous Transfer Mode.
a) All of the above b) i, ii, and iv
c) ii, iii, and iv d) i, ii, and III
4. The Ethernet system consists of three basic elements
i) The physical medium used to carry Ethernet signals between computers on the network.
ii) A set of rules embedded in each Ethernet interface that will decide how multiple computers on
the network will have access to the data on the medium.
iii) An Ethernet frame that consists of a standardized set of bits used to carry data over the system.
iv) The logical Channel used to carry Ethernet signals between computers on the network.
a) All of the above b) i, ii, and iv
c) ii, iii, and iv d) i, ii, and III
5. There are 3 type of Fast Ethernet:
i) 100Base-TX
ii) 100Base-TF
iii) 100Base-T4
iv) 100Base-FX
a) All of the above b) i, ii, and iv
c) ii, iii, and iv d) i, ii, and III
III. Answers- 4 Mark
1. B 2. A 3. A 4. D 5. D
UNIT – 4
Network Architecture
I. Each Question Carries 1 Mark.
1. The ____________ model shows how the network functions of a computer ought to be organized.
a) ITU-T b) OSI c) ISO d) ANSI
2. The OSI model consists of ______________ layers.
a) Three b) Five c) Seven d) Eight
3. The ____________ layer decides the location of synchronization points.
a) Transport b) Session c) Presentation d) Application
4. The end-to-end delivery of the entire message is the responsibility of the ______________ layer.
a) Network b) transport c) session d) Presentation
5. The ___________ layer is the layer closet to the transmission medium.
a) Physical b) Data – link c) network d) transport
6. In the ___________ layer, the data unit is called a frame.
a) Physical b) Data – link c) network d) transport
7. Decryption and encryption of data are the responsibility of the _______________ layer.
a) Physical b) Data-Link c) Presentation d) Session
8. Dialog control is a function of the ____________layer.
a) Physical b) Data-Link c) Presentation d) Session
9. Node – to –Node delivery of the data unit is the responsibility of the ______________ layer.
a) Physical b) Data-Link c) Transport d) Network
10. As the data packet moves from the lower to the upper layers, headers are _____________.
a) Added b) Subtracted c) rearranged d) Modified
11. As the data packet moves from the upper to the lower layers, headers are ___________-.
a) Added b) Subtracted c) rearranged d) Modified
12. The _________ layer lies between the network layer and the session layer.
a) Physical b) Data-Link c) Transport d) Presentation
13. Layer 2 lies between the physical layer and the ___________ layer.
a) Network b) Data-Link c) Transport d) Presentation
14. In the ___________ layer, translations from one character code to another occur.
a) Transport b) Session c) Presentation d) Application
15. The ___________ layer changes bits into electromagnetic signals.
a) Physical b) Data-Link c) Transport d) Presentation
16. The ____________ model has come fro the ARPANET, the predecessor of the Internet.
a) TCP/IP b) ISO c) OSI d) ANSI
17. The TCP/IP model is also called as the TCP/IP protocol stack is organized into _______layer.
a) Three b) Five c) Seven d) Four
18. In internetworking protocols ____________ is the older and simpler, which sends raw IP packets over the line, with a special flag byte at the end of the framing.
a) SLIP b) PPP c) TCP d) IP
19. ____________ handles error detection, supports multiple protocols, allows IP addresses to be negotiated at the connection time, permits authentication, and has many other improvements over SLIP.
a) SLIP b) PPP c) TCP d) IP
20. The full form of SLIP
a) Serial Line Internet Protocol b) Series Line Internet Protocol
c) Serial Line Internal Protocol d) None
I. Answers- 1 Mark
1. B 2. C 3. B 4. B 5. A 6. B
7.C 8. D 9. B 10. A 11. B 12. C
13.C 14. C 15. A 16. A 17. D 18. A
19. B 20. A
III. Each Question Carries 4 Marks.
1. The Function provided by the Data Link Layer is:
i) Transmitting and receiving frames sequentially
ii) Providing frame acknowledge for frames it receives
iii) Re-transmitting frames that are acknowledged by the receiving computer
iv) Transmitting and receiving frames arbitrary
a) All of the above b) i, ii, and iv
c) ii, iii, and iv d) i, ii, and III
2. The Four layer of TCP/IP model is :
i) Network Interface layer ii) Internet Layer
iii) Transport Layer iv) Application Layer
v) Network Layer
a) i, ii, iii, and iv b) i, ii, and iv
c) ii, iii, and iv d) i, ii, and III
3. SLIP has some serious problems:
i) It does not do any error detection or correction.
ii) SLIP supports only IP
iii) With SLIP each side must know the other’s IP address in advance. Looking at the current
Shortage of IP address, this limitation is a major issue as it is impossible to give each home
Internet user a unique IP address.
iv) SLIP does not provide any form of authentication, so neither party known whom it is really
talking.
a) All of the above b) i, ii, and iv
c) ii, iii, and iv d) i, ii, and III
4. PPP provides:
i) A framing method that unambiguously delineates the end of one frame and the start of the next
one, and also handles error detection.
ii) A Link control protocol for bringing line up, testing them, negotiating options, and bringing them
down when they are not needed.
iii) A way to negotiate network layer options in a way that is independent of the network layer
protocol to be used.
a) All of the above b) i, ii
c) ii iii d) ii
III. Answers- 4 Mark
1. A 2. A 3. A 4. A
UNIT – 5
Network Management and Security
I. Each Question Carries 1 Mark.
1. The ___________ is a framework for managing devices in an Internet using the TCP/IP protocol suite. It provides a set of fundamental operations for monitoring and maintaining an Internet.
a) SNMP b) TELNET c) FTP d) None
2. In Case of a ________________ , hubs are connected together so that the additional PCs can be connected without affecting the existing setup.
a) Daisy Chained Hub b) Hierarchical arrangement
c) Tree arrangement d) None
3. An __________ is a network that fits somewhere between the LAN and the Internet.
a) LAN b) Internet c) Intranet d) None
4. __________ is accessible only from within an organization, to which it belongs.
a) LAN b) Internet c) Intranet d) None
5. Software ____________ are used to prevent any outsider from cracking into the intranet.
a) Firewall b) Anti-virus c) Scanner d) None
6. _____________ is the process of changing intelligible data into unintelligible data.
a) Encryption b) Decryption c) Conversion d) Firewall
7. The original message is called ____________
a) Plaintext b) clear text c) cipher text d) None
I. Answers- 1 Mark
1. A 2. A 3. C 4. C 5. A 6. A
7. A
III. Each Question Carries 4 Marks.
1. The SNMP model of a managed network consists of four components
i) Managed nodes
ii) Management Stations
iii) Management Information
iv) A Management Protocol
v) Management Internals
a) i, ii, iii, and iv b) i, ii, and v
c) ii, iii, and v d) i, ii, and III
III. Answers- 4 Mark
1. A
