Multiple Choice Questions Of Computer Networking

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Multiple Choice Questions of Computer Networking1-1 Computer Network isA. Collection of hardware components and computersB. Interconnected by communication channelsC. Sharing of resources and informationD. All of the Above1-2 What is a Firewall in Computer Network?A. The physical boundary of NetworkB. An operating System of Computer NetworkC. A system designed to prevent unauthorized accessD. A web browsing Software1-3 How many layers does OSI Reference Model has?A. 4B. 5C. 6D. 71-4 DHCP is the abbreviation ofA. Dynamic Host Control ProtocolB. Dynamic Host Configuration ProtocolC. Dynamic Hyper Control ProtocolD. Dynamic Hyper Configuration Protocol1-5 IPV4 Address isA. 8 bitB. 16 bitC. 32 bitD. 64 bit1-6 DNS is the abbreviation ofA. Dynamic Name SystemB. Dynamic Network SystemC. Domain Name SystemD. Domain Network Service1-7 What is the meaning of Bandwidth in Network?A. Transmission capacity of a communication channelsB. Connected Computers in the NetworkC. Class of IP used in NetworkD. None of Above1-8 ADSL is the abbreviation ofA. Asymmetric Dual Subscriber LineB. Asymmetric Digital System LineC. Asymmetric Dual System LineD. Asymmetric Digital Subscriber Line1-9 What is the use of Bridge in Network?A. to connect LANsB. to separate LANsC. to control Network SpeedD. All of the above1-10 Router operates in which layer of OSI Reference Model?A. Layer 1 (Physical Layer)B. Layer 3 (Network Layer)C. Layer 4 (Transport Layer)D. Layer 7 (Application Layer)

Click Here for Answers1 – D / 2 – C / 3 – D / 4 – B / 5 – C / 6 – C / 7 – A / 8 – D / 9 – A / 10 – BMultiple Choice Questions of Computer Networking2-1 Each IP packet must containA. Only Source addressB. Only Destination addressC. Source and Destination addressD. Source or Destination address2-2 Bridge works in which layer of the OSI model?A. Appliation layerB. Transport layerC. Network layerD. Datalink layer2-3 provides a connection-oriented reliable service for sending messagesA. TCPB. IPC. UDPD. All of the above2-4 Which layers of the OSI model are host-to-host layers?A. Transport, Session, Persentation, ApplicationB. Network, Transport, Session, PresentationC. Datalink, Network, Transport, SessionD. Physical, Datalink, Network, Transport2-5 Which of the following IP address class is MulticastA. Class AB. Class BC. Class CD. Class D2-6 Which of the following is correct regarding Class B Address of IP addressA. Network bit – 14, Host bit – 16B. Network bit – 16, Host bit – 14C. Network bit – 18, Host bit – 16D. Network bit – 12, Host bit – 142-7 The last address of IP address representsA. Unicast addressB. Network addressC. Broadcast addressD. None of above2-8 How many bits are there in the Ethernet address?A. 64 bitsB. 48 bitsC. 32 bitsD. 16 bits2-9 How many layers are in the TCP/IP model?A. 4 layersB. 5 layersC. 6 layersD. 7 layers2-10 Which of the following layer of OSI model also called end-to-end layer?A. Presentation layerB. Network layerC. Session layerD. Transport layer

Click Here for Answers1 – C / 2 – D / 3 – A / 4 – A / 5 – D / 6 – A / 7 – C / 8 – B / 9 – A / 10 – DMultiple Choice Questions of Computer Networking3-1. Why IP Protocol is considered as unreliable?A. A packet may be lostB. Packets may arrive out of orderC. Duplicate packets may be generatedD. All of the above3-2. What is the minimum header size of an IP packet?A. 16 bytesB. 10 bytesC. 20 bytesD. 32 bytes3-3. Which of following provides reliable communication?A. TCPB. IPC. UDPD. All of the above3-4. What is the address size of IPv6 ?A. 32 bitB. 64 bitC. 128 bitD. 256 bit3-5. What is the size of Network bits & Host bits of Class A of IP address?A. Network bits 7, Host bits 24B. Network bits 8, Host bits 24C. Network bits 7, Host bits 23D. Network bits 8, Host bits 233-6. What does Router do in a network?A. Forwards a packet to all outgoing linksB. Forwards a packet to the next free outgoing linkC. Determines on which outing link a packet is to be forwardedD. Forwards a packet to all outgoing links except the originated link3-7. The Internet is an example ofA. Cell switched networkB. circuit switched networkC. Packet switched networkD. All of above3-8. What does protocol defines?A. Protocol defines what data is communicated.B. Protocol defines how data is communicated.C. Protocol defines when data is communicated.D. All of above3-9. What is the uses of subnetting?A. It divides one large network into several smaller onesB. It divides network into network classesC. It speeds up the speed of networkD. None of above3-10. Repeater operates in which layer of the OSI model?A. Physical layerB. Data link layerC. Network layerD. Transport layerClick Here for Answers1 – D / 2 – C / 3 – A / 4 – C / 5 – A / 6 – C / 7 – C / 8 – D / 9 – A / 10 – A

Multiple C hoice Questions of Computer Networking4-1. What is the benefit of the Networking?A. File SharingB. Easier access to ResourcesC. Easier BackupsD. All of the Above4-2. Which of the following is not the Networking Devices?A. GatewaysB. LinuxC. RoutersD. Firewalls4-3. What is the size of MAC Address?A. 16-bitsB. 32-bitsC. 48-bitsD. 64-bits4-4. Which of the following can be Software?A. RoutersB. FirewallsC. GatewayD. Modems4-5. What is the use of Ping command?A. To test a device on the network is reachableB. To test a hard disk faultC. To test a bug in a ApplicationD. To test a Pinter Quality4-6. MAC Address is the example ofA. Transport LayerB. Data Link LayerC. Application LayerD. Physical Layer4-7. Routing tables of a router keeps track ofA. MAC Address AssignmentsB. Port Assignments to network devicesC. Distribute IP address to network devicesD. Routes to use for forwarding data to its destination4-8. Layer-2 Switch is also calledA. Multiport HubB. Multiport SwitchC. Multiport BridgeD. Multiport NIC4-9. Difference between T568A and T568B isA. Difference in wire colorB. Difference in number of wiresC. Just different length of wiresD. Just different manufacturer standards4-10. The meaning of Straight-through Cable isA. Four wire pairs connect to the same pin on each endB. The cable Which Directly connects Computer to ComputerC. Four wire pairs not twisted with each otherD. The cable which is not twistedClick Here for Answers1 – D / 2 – B / 3 – C / 4 – B / 5 – A / 6 – B / 7 – D / 8 – C / 9 – D / 10 – AMultiple Choice Questions of Computer Networking5-1 Which of the following is not the External Security Threats?A. Front-door ThreatsB. Back-door ThreatsC. Underground ThreatsD. Denial of Service (DoS)

5-2 What is the Demilitarized Zone?A. The area between firewall & connection to an external networkB. The area between ISP to Military areaC. The area surrounded by secured serversD. The area surrounded by the Military5-3 What is the full form of RAID ?A. Redundant Array of Independent DisksB. Redundant Array of Important DisksC. Random Access of Independent DisksD. Random Access of Important Disks5-4 What is the maximum header size of an IP packet?A. 32 bytesB. 64 bytesC. 30 bytesD. 60 bytes5-5 What is the size of Host bits in Class B of IP address?A. 04B. 08C. 16D. 325-6 What is the usable size of Network bits in Class B of IP address?A. 04B. 08C. 14D. 165-7 In which type of RAID, data is mirrored between two disks.A. RAID 0B. RAID 1C. RAID 2D. RAID 35-8 What do you mean by broadcasting in Networking?A. It means addressing a packet to all machineB. It means addressing a packet to some machineC. It means addressing a packet to a particular machineD. It means addressing a packet to except a particular machine5-9 Which of the following is/are Protocols of Application?A. FTPB. DNSC. TelnetD. All of above5-10 Which of the following protocol is/are defined in Transport layer?A. FTPB. TCPC. UDPD. B & CClick Here for Answers1 – C / 2 – A / 3 – A / 4 – D / 5 – C / 6 – C / 7 – B / 8 – A / 9 – D / 10 – DMultiple Choice Questions of Computer Networking6-1. What is the IP Address range of APIPA?A. 169.254.0.1 to 169.254.0.254B. 169.254.0.1 to 169.254.0.255C. 169.254.0.1 to 169.254.255.254D. 169.254.0.1 to 169.254.255.2556-2. Which of the following is correct in VLSM?A. Can have subnets of different sizesB. Subnets must be in same sizeC. No required of subnetD. All of above6-3. What does the port number in a TCP connection specify?A. It specifies the communication process on the two end systems

B. It specifies the quality of the data & connectionC. It specify the size of dataD. All of the above6-4. The class-based addressing is also known asA. Modern ModelB. Classful ModelC. Classless ModelD. Heterogeneous Model6-5. Which of the following is correct in CIDR?A. Class A includes Class B networkB. There are only two networksC. There are high & low class networkD. There is no concept of class A, B, C networks6-6. What is the size of Source and Destination IP address in IP header?A. 4 bitsB. 8 bitsC. 16 bitsD. 32 bits6-7. Which of the following is reliable communication?A. TCPB. IPC. UPDD. All of them6-8. What is the typical range of Ephemeral ports?A. 1 to 80B. 1 to 1024C. 80 to 8080D. 1024 to 655356-9. What is the purpose of the PSH flag in the TCP header?A. Typically used to indicate end of messageB. Typically used to indicate beginning of messageC. Typically used to push the messageD. Typically used to indicate stop the message6-10. What is the natural mask for a class C Network?A. 255.255.255.1B. 255.255.255.0C. 255.255.255.254D. 255.255.255.255Click Here for Answers1 – C / 2 – A / 3 – A / 4 – B / 5 – D / 6 – D / 7 – A / 8 – D / 9 – A / 10 – B1. When collection of various computers seems a single coherent system to utedsystemc)both(a)and(b)d)noneofthementionedView AnswerAnswer:bExplanation:None.

2.Twodevicesareinnetworkifa) a process in one device is able to exchange information with a process inanotherdeviceb)aprocessisrunningonbothdevicesc) PIDs of the processes running of different devices are samed)noneofthementionedView AnswerAnswer:aExplanation:None.3. Which one of the following computer network is built on the top of networkd)overlaynetworkView d)View hethearedatadatadatamentioned5. Communication channel is shared by all the machines on the network workd)noneofthementionedView orknetworknetwork

d)View . A is a device that forwards packets between networks by .a)bridgeb)firewallc)routerd)allofthementionedView AnswerAnswer:cExplanation:None.8. A list of protocols used by a system, one protocol per layer, is colsuitd)noneofthementionedView whenc)whenconnectiond)noneView swer:aExplanation:None.10. Which one of the following extends a private network across public c)enterpriseprivatenetworkd)storageareanetworkView AnswerAnswer:bExplanation:None.

This set of Computer Networks Questions & Answers focuses on “Physical Media”.1) Which of this is not a guided media ?a) Fiber optical cableb) Coaxial cablec) Wireless LANd) Copper wireView AnswerAnswer: cExplanation: Wireless LAN is unguided media.2) UTP is commonly used ina) DSLb) FTTPc) HTTPd) None of the mentionedView AnswerAnswer: aExplanation: Unshielded twisted pair(UTP) is commonly used in home access.3) Coaxial cable consists of concentric copper conductors.a) 1b) 2c) 3d) 4View AnswerAnswer: bExplanation: None.4) Fiber optics posses following propertiesa) Immune electromagnetic interferenceb) Very less signal attenuationc) Very hard to tapd) All of the mentionedView AnswerAnswer: dExplanation: None.5) If an Optical Carrier is represented as OC-n, generally the link speed equals(inMbps),a) n*39.8b) n*51.8

c) 2n*51.8d) None of the mentionedView AnswerAnswer: bExplanation: None.6) Terrestrial radio channels are broadly classifed into groups.a) 2b) 3c) 4d) 1View AnswerAnswer: bExplanation: The three types are those that operate over very short distance, those that operate in local areas, those thatoperate in the wide area.7) Radio channels are attractive medium becausea) Can penetrate wallsb) Connectivity can be given to mobile userc) Can carry signals for long distanced) All of the mentionedView AnswerAnswer: dExplanation: None.8) Geostationary satellitesa) Are placed at a fixed point above the earthb) Rotate the earth about a fixed axisc) Rotate the earth about a varying axisd) All of the mentionedView AnswerAnswer: aExplanation: They are placed in orbit at 36,000km above Earth’s surface.1. A piece of icon or image on a web page associated with another webpage edView Answer

verytimewheneveritdisplaysb) generates on demand by a program or a request from browserc)both(a)and(b)d)noneofthementionedView lofView on:None.4.Commongatewayinterfaceisa) generate executable files from web contentb)generatewebc)streamd)noneoftheView Answerusedby :None.5.a)b)c)d)View ceofdataa) sent from a website and stored in user’s web browser while a user is browsingawebsiteb) sent from user and stored in the server while a user is browsing a website

c)sentd)View Answer:aExplanation:None.7. Which one of the following is not used to generate dynamic web pages?a)PHPb)ASP.NETc)JSPd)noneofthementionedView Answer8.Analternativea)b)c)d)noneView isdocumentobjectmodel(DOM)?a) convention for representing and interacting with objects in html chyofobjectsinASP.NETd)noneofthementionedView usb)advancedc)asynchronousd)advancedView JSPjavascriptandandandandforxmlxmlxmlxml

1. Multiple object can be sent over a TCP connection between client and a)and(b)d)noneofthementionedView iew Inthenetworka)uniformb)uniquec)uniqued)noneView er:aExplanation:None.4. HTTP client requests by establishing a connection to a ld)noneofthementionedView ) multiple HTTP requests are sent on a single TCP connection without waitingforthecorrespondingresponses

b) multiple HTTP requests can not be sent on a single TCP connectionc) multiple HTTP requests are sent in a queue on a single TCP connectiond)noneofthementionedView View er:bExplanation:None.7. In FTP protocol, client contacts server using as the ew wer:aExplanation:None.8. In which mode FTP, the client initiates both the control and data b)d)noneofthementionedView AnswerAnswer:bExplanation:None.9.Thea)b)c)d)View ecturearchitecturementioned

Answer:cExplanation:None.10. In filea)b)c)d)View Answertransferallprotocol, datastreamblockcompressedoftransfercanbethedone a)b)c)d)View one.2.Whatisa)b)c)d)View e.3.1)b)c)d)View :dExplanation:None.4.Whatisautonegotiation?a) a procedure by which two connected devices choose common transmission

parametersb)c)d)View tionedtheAnswer:aExplanation:None.5. Ethernet in metropolitana)b)ethernetc)ethernetd)allView Answerarea networkpureof(MAN)canbeoverovertheused .6. A point-to-point protocol over ethernet is a network protocol rityofethernetframesd)forsecurityofPPPframesView a)coaxialb)twistedpairc)opticald)noneoftheView Answerworksoncablecablefibermentionedethernetframe isbytesbytesbytesbytesAnswer:cExplanation:None.8. The maximuma)b)c)d)View Answersizeofpayload1000120013001500fieldin

)noneView xplanation:None.10. An ethernet frame that is less than the IEEE 802.3 minimum length of )manframeView AnswerAnswer:bExplanation:None.This set of Computer Networks Questions & Answers focuses on “Topology”.1) Physical or logical arrangement of network isa) Topologyb) Routingc) Networkingd) None of the mentionedView AnswerAnswer: aExplanation: None.2) In this topology there is a central controller or huba) Starb) Meshc) Ringd) BusView AnswerAnswer: aExplanation: None.

3) This topology requires multipoint connectiona) Starb) Meshc) Ringd) BusView AnswerAnswer: dExplanation: None.4) Data communication system spanning states, countries, or the whole world isa) LANb) WANc) MANd) None of the mentionedView AnswerAnswer: bExplanation:Wide area network(WAN) covers the whole of the world network.5) Data communication system within a building or campus isa) LANb) WANc) MANd) None of the mentionedView AnswerAnswer: aExplanation: None.6) Expand WANa) World area networkb) Wide area networkc) Web area networkd) None of the mentionedView AnswerAnswer: bExplanation: None.Computer Networks Questions & Answers – Packet Switching & CircuitSwitchingThis set of Computer Networks Questions & Answers focuses on “Packet Switching and Circuit Switching”.

1) A local telephone network is an example of a networka) Packet switchedb) Circuit switchedc) both of the mentionedd) none of the mentionedView AnswerAnswer: aExplanation: None.2) Most packet switches use this principlea) Stop and waitb) Store and forwardc) Both of the mentionedd) None of the mentionedView AnswerAnswer: bExplanation: The packet switch will not transmit the first bit to outbound link until it recieves the entire packet.3) If there are N routers from source to destination, total end to end delay in sending packet P(L- number ofbits in the packet R- transmission rate)a) Nb) (N*L)/Rc) (2N*L)/Rd) L/RView AnswerAnswer: bExplanation: None.4) Method(s)

Multiple Choice Questions of Computer Networking 2-1 Each IP packet must contain A. Only Source address B. Only Destination address C. Source and Destination address D. Source or Destination address 2-2 Bridge works in which layer of the OSI model? A. Appliation layer B. Transport layer C. Network layer D. Datalink layer

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