Networking Concepts Test

Networking Concepts Test

 

In a TCP/IP network, which of the following must be unique for each computer in the network?

a. IP address

b. Subnet mask

c. Default Gateway

What does CSMA/CA stand for?

a. Collision Sense Multiple Access/ Collision Avoidance

b. Carrier Sense Multiple Access/ Collision Avoidance

c. Carrier Sense Multiple Access/ Collision Arbitration

d. Collision Sense Multiple Access/ Carrier Avoidance

Which cable uses RJ45 connectors?

a. Thin Coaxial Cable

b. Thick Coaxial Cable

c. Unshielded Twisted Pair Cable

d. Shielded Twisted Pair Cable

According to the OSI model, which layer addresses the issue of network topologies (star, ring, bus etc)?

a. Network

b. Data Link

c. Transport

d. Physical

What is the purpose of twisting the pairs of cables together in a UTP cable?

a. To reduce attenuation

b. To reduce cross talk

c. To reduce Electro-Magnetic Interference

d. To reduce noise

What are PPP and SLIP most commonly used for?

a. Connecting to the Internet through DSL lines

b. Connecting to the Internet through telephone lines

c. Connecting to the Internet through fiber optic lines

d. Connecting to the Internet using wireless modems

What is the IEEE 802.2 standard related to?

a. Definition of the Logical Link Control (LLC) sublayer

b. Token Ring

c. Token Bus

d. Ethernet

Which layer of the OSI model corresponds to TCP?

a. Network

b. Transport

c. Session

d. Data Link

Which of the following ranges are reserved as private addresses?

a. 192.168.0.0 - 192.255.255.255

b. 172.16.0.0 - 172.255.255.255

c. 10.0.0.0 - 10.255.255.255

d. 172.16.0.0 - 172.31.255.255

According to the OSI model, which layer performs encryption and decryption?

a. Application

b. Presentation

c. Session

d. Data Link

What is the binary value of hex 9F?

a. 10011111

b. 10111000

c. 11110001

d. 10001111

At which layer of the OSI model, does SMTP (Simple Mail Transfer Protocol) operate?

a. Application

b. Transport

c. Session

d. Presentation

What is the speed of a T1 line?

a. 128 kbps

b. 144 kbps

c. 2.048 Mbps

d. 1.544 Mbps

Which layer do Network Cards and their drivers correspond to?

a. Data Link

b. Network

c. Transport

d. Session

Which of the following is a disadvantage of Client Server networks?

a. They have poor security

b. Data is not centrally organized

c. Centralized administration is not possible

d. They require high investment in the form of purchase of a server

At which layer of the OSI model, does a Proxy Server operate?

a. Application

b. Transport

c. Session

d. Presentation

What is the full form of PPPoE?

a. Point to Point Protocol over Exchange

b. Point to Point Password over Ethernet

c. Point to Point Protocol over Ethernet

d. None of the above

At which layer does a Bridge operate?

a. Network

b. Physical

c. Session

d. Data Link

What do you call a communication system which uses a clocking mechanism to synchronize the sender and receiver?

a. Half Duplex

b. Full Duplex

c. Asynchronous

d. Synchronous

Which type of network uses dual fibre-optic rings?

a. Ethernet

b. FDDI

c. Token Ring

d. ATM

Which layer of the OSI model corresponds to IP?

a. Network

b. Physical

c. Session

d. Data Link

How many bearer (B) and data (D) channels are there in a standard ISDN BRI service?

a. 2B + 1D channel

b. 16B + 1D channel

c. 23B + 1D channel

d. 24B + 2D channels

What is the IEEE 802.3 standard related to?

a. Definition of the Logical Link Control (LLC) sublayer

b. Token Ring

c. Token Bus

d. Ethernet

What do you call a communication system in which data can be sent in both directions at the same time?

a. Half Duplex

b. Full Duplex

c. Asynchronous

d. Synchronous

According to the OSI model, which layer is responsible for routing?

a. Session

b. Data Link

c. Presentation

d. Network

What is ATM (Asynchronous Transfer Mode)?

a. It is a WAN technology based on frequency division multiplexing that uses fixed size packets known as cells

b. It is a WAN technology based on time division multiplexing that uses variable size packets

c. It is a WAN technology based on time division multiplexing that uses fixed size packets known as cells

d. It is a virtual circuit based WAN technology

Which of the following is false with regard to assymetric DSL?

a. It uses standard copper telephone cables

b. It delivers much higher speeds than a serial modem

c. It uses more channels for downloading data and fewer for uploading

d. It employs analog modulation to deliver data from your PC to the telephone service provider

Which of the following is an 'end-to-end' layer?

a. Physical

b. Data Link

c. Network

d. Transport

What is a token?

a. A part of the packet trailer in a token ring network

b. A part of the packet header in a token ring network

c. A special packet which travels from computer to computer in a token ring network

Which of the following is not a fiber optic based network?

a. FDDI

b. ATM

c. Frame Relay

d. Ethernet

According to the OSI model, which layer addresses the issue of connections (connection-oriented/ connection-less communication)?

a. Physical

b. Data Link

c. Network

d. Transport

What do you call a communication system in which data cannot be sent in both directions at the same time?

a. Half Duplex

b. Full Duplex

c. Asynchronous

d. Synchronous

What is the recommended maximum length(approx) for a segment of UTP cable?

a. 500m

b. 1km

c. 100m

d. 180m

What are V.42, V.22, V.42bis?

a. IEEE standards

b. Modem standards

c. CCITT standards

d. MAC addressing formats

e. Digital Certificate formats

According to the OSI model, which layer addresses the issues of communication media and cable connectors etc?

a. Network

b. Data Link

c. Transport

d. Physical

At which layer of the OSI model, does a World Wide Web browser operate?

a. Application

b. Transport

c. Session

d. Presentation

What is the maximum transmission speed of CAT 5 cable?

a. 10 Mbps

b. 16 Mbps

c. 100 Mbps

d. 1000 Mbps

Which of the following services is feasible using standard ISDN?

a. Fax

b. Voice Telephony

c. Data Transfer

d. Video Conferencing

e. All of the above

Which of the following cables can be used to connect a PC and a Hub?

a. Straight cable

b. Cross cable

c. Rollover cable

d. Any of the above

What do you call a medium which allows multiple channels?

a. Multi mode

b. Single mode

c. Broadband

d. Baseband

Which of the following is a Class A network?

a. 172.0.0.0

b. 126.0.0.0

c. 192.0.0.0

d. 225.0.0.0

At which layer does a Hub operate?

a. Network

b. Physical

c. Session

d. Data Link

Which media suffers least from attenuation?

a. Thin Coaxial Cable

b. Thick Coaxial Cable

c. Unshielded Twisted Pair Cable

d. Fiber Optic Cable

What is the full form of DSL?

a. Digital Subscription Line

b. Digital Super Link

c. Digital Speed Line

d. Digital Subscriber Line

According to the OSI model, which layer performs compression and decompression?

a. Application

b. Presentation

c. Session

d. Data Link

Which cabling media does not suffer from Electro-Magnetic Interference(EMI)?

a. Thin Coaxial Cable

b. Thick Coaxial Cable

c. Unshielded Twisted Pair Cable

d. Fibre Optic Cable

At which layer of the OSI model, does FTP operate?

a. Application

b. Transport

c. Session

d. Presentation

What is the binary value of 157?

a. 11000111

b. 10111001

c. 11100011

d. 10011101

Which protocol uses port number 23?

a. FTP

b. SMTP

c. Telnet

d. HTTP

Which media access technique does Ethernet use?

a. CSMA/CA

b. CSMA/CD

c. Tokens

For which layer of the OSI model has the Ethernet standard been defined?

a. Physical

b. Data Link

c. Network

d. Transport

e. Both a and b

f. both b and c

Which layer do Network Cards and their drivers correspond to?

a. Physical

b. Network

c. Transport

d. Session

Old mainframe computers were an example of __________?

a. Distributed computing

b. Client server computing

c. Peer to peer computing

d. Centralized computing

At which layer of the OSI model, does HTTP operate?

a. Application

b. Transport

c. Session

d. Presentation

According to the OSI model, which layer performs parity checking and error checking?

a. Session

b. Data Link

c. Presentation

d. Physical

According to the OSI model, which layer is responsible for sending acknowledgements?

a. Session

b. Transport

c. Data Link

d. Presentation

Which of the following is mentioned in the correct sequence (from lowest layer to highest)?

a. Physical, Network, Data Link, Session, Transport, Presentation, Application

b. Physical, Data Link, Network, Transport, Session, Presentation, Application

c. Transport, Session, Data Link, Application, Presentation, Network, Physical

d. Physical, Data Link, Network, Transport, Presentation, Session, Application

What is the IEEE 802.5 standard related to?

a. Definition of the Logical Link Control (LLC) sublayer

b. Token Ring

c. Token Bus

d. Ethernet

Which of the following is a disadvantage of Peer Networks?

a. They require high investment in the form of purchase of a server

b. They require high investment in the form of purchase of a specialized network operating system

c. They usually require a network administrator

d. They have poor network security

Which of the following is a Fiber Optic Connector?

a. RJ-11

b. RJ-45

c. MT-RJ

d. None of the above

What do you call a communication system which uses start and stop bits to synchronize the sender and receiver?

a. Half Duplex

b. Full Duplex

c. Asynchronous

d. Synchronous

What is the maximum number of valid IP addresses in a class B network?

a. 65536

b. 65534

c. 256

d. 254

What is the maximum speed supported by a standard ISDN BRI?

a. 64 kbps

b. 128 kbps

c. 256 kbps

d. 1.544 mbps

Which of the following protocols does not support Routing?

a. IPX/SPX

b. TCP/IP

c. NetBEUI

What is multiplexing?

a. Allowing multiple senders and receivers to share a single channel

b. Allowing multiple senders and receivers to share a single media

c. Allowing bi-directional communication

What is the X.25 protocol?

a. It is a packet switching WAN protocol based on public data networks

b. It is a packet switching WAN protocol based on public telephone networks

c. It is a packet switching wireless LAN protocol

d. It is a packet switching wireless WAN protocol

What does CSMA/CD stand for?

a. Collision Sense Multiple Access/ Collision Detection

b. Carrier Sense Multiple Access/ Collision Deterence

c. Carrier Sense Multiple Access/ Collision Detection

d. Collision Sense Multiple Access/ Carrier Detection

What is the speed of a E1 line?

a. 128 kbps

b. 144 kbps

c. 2.048 Mbps

d. 1.544 Mbps

Which one of the following devices breaks up a Broadcast Domain by default?

a. Hub

b. Repeater

c. Router

d. Switch

At which layer does a Router operate?

a. Network

b. Physical

c. Transport

d. Data Link

How many twisted pairs does a UTP Cat 5 cable have?

a. 2

b. 4

c. 6

d. 8

How is a unique MAC address assigned to a Network Card?

a. It is built into the card when the card is manufactured

b. The network administrator must assign the address

c. A unique address is automatically assigned when the card drivers are installed

d. A unique address is automatically assigned whenver you boot up the computer

In a TCP/IP network, which layers are basically absent?

a. Session, Presentation

b. Transport, Session

c. Session, Application

d. Presentation, Application

What is a checksum?

a. An error detection technique

b. A network troubleshooting device

c. Another name for protocol header

d. Another name for protocol trailer

Which layer is broken down into the MAC and LLC sublayers?

a. Network

b. Data Link

c. Session

d. Physical

Which type of connector is mostly used these days for connectivity with the network card?

a. RJ-11

b. BNC

c. RJ-45

d. RJ-33

According to the OSI model, which layer provides services such as file transfer, database access and email?

a. Application

b. Presentation

c. Session

d. Data Link

What is the speed of ISDN PRI service with 30B + 1D channel?

a. 2.048 Mbps

b. 1.544 Mbps

c. 144 Kbps

d. 128 Kbps

What do you call a fibre optic cable in which the light signals follow a single path?

a. Multi mode

b. Single mode

c. Broadband

d. Baseband

According to the OSI model, which layer breaks down the data into frames?

a. Network

b. Data Link

c. Transport

d. Physical

According to the OSI model, which layer addresses the issue of switching (packet switching, message switching etc)?

a. Session

b. Data Link

c. Presentation

d. Network

What is attenuation?

a. Distortion of the signal due to noise

b. Distortion of the signal due to Electro Magnetic Interference

c. Weakening of the signal in a cable over a distance

d. Cross Talk

What is the purpose of the shielding in a Shielded Twisted Pair (STP) cable?

a. To reduce attenuation

b. To reduce cross talk

c. To reduce Electro-Magnetic Interference

Which network topology does Ethernet use?

a. Star

b. Ring

c. Bus

d. Mesh

Which cable used for RJ11 connectors?

a. Thin Coaxial Cable

b. Thick Coaxial Cable

c. Unshielded Twisted Pair Cable

d. Telephone Cable

What does ISDN stand for?

a. Information Systems Digital Network

b. Integrated Services Digital Network

c. Internet Services Digital Network

d. Internet Systems Data Network

Which protocol is connection oriented?

a. TCP

b. IP

c. UDP

d. ICMP

Which network topology does FDDI use?

a. Star

b. Ring

c. Bus

d. Mesh

What do you call a medium which only allows a single channel?

a. Multi mode

b. Single mode

c. Broadband

d. Baseband

What is the binary value of hex BF?

a. 10100000

b. 10111111

c. 11111000

d. 00111011

According to the OSI model, at which layer are network addresses assigned?

a. Session

b. Data Link

c. Presentation

d. Network

Which of the following is used as a high speed network backbone media?

a. Thin Coaxial Cable

b. Thick Coaxial Cable

c. Unshielded Twisted Pair Cable

d. Fiber Optic Cable

What is the purpose of the MAC sublayer?

a. Sending acknowledgements whenever packets are received

b. Performing data compression

c. Performing encryption and decryption

d. Controlling the way multiple devices share the same media

What do you call a fiber optic cable in which the light signals follow multiple paths?

a. Multi mode

b. Single mode

c. Broadband

d. Baseband

Which of the following cables can be used to directly connect two PCs?

a. Straight cable

b. Cross cable

c. Rollover cable

d. Any of the above