Upwork Networking Concepts Test Answers 2018

40 Answered Test Questions:

1)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

2)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

3)which of the following acess techniques is used by Ethernet?
a)CSMA/CA
b)CSMA/CD
c)Token Passing

4)Which of the following services using standard ISDN?
a)Fax
b)Data Transfer
c)Video Conferencing
d)All of the above

5)Which of the following devices up aBroadcast Domain By Default?
a)Hub
b)Repeater
c)Router
d)Switch

6)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)Fibre Optic Cable

7)what is attenuaion?
a)Distortion of the signsl due to noise
b)Distortion of the signsl due to Electro Magnetic Innterference
c)Weakening of the signal in a cable over a distance
d)Cross Talk

8)Which media suffers least from attenuation?
a)Thin Coaxil Cable
b)Thick Coaxil Cable
c)Unshielded Twisted Pair Cable
d)Fibre Optic Cable

9)What is a tokken?
a)A part of th Packet trailer in a tokken ring network
b)A part of th Packet header in a tokken ring network
c)A special packet which travels from computer to computer in a tokken ring network

10)According to the OSI model, which layer defines network topogies (star,ring,bus etc)?
a)Network
b)Data link
c) Transport
d)Physical

11)Acording to the OSI model , which layer is responsiblefor sending acknowledgments of successful data transfer?
a)Session
b)Transport
c)Data Link
d)Presentation

12)Which of following network topologies can be used by standard Ethernet and ThinNet Ethernet?
a)Star
b)Ring
c)Bus
d)Mesh

13)What is the speed of a E1 line?
a)128 kbps

b)144 kbps
c)2.048 Mbps

d)1.544 Mbps

14)What do you call a communcation system in which data can be sen in both directions at the same time?
a)Half Duplex
b)Full Duplex
c)Asynchronous
d)Synchronous

15)What dose CSMA/CD stand for?
a)Collision Sense Multiple Access/Collision Detcetion
b)Carrier Sense Multiple Access/Collision Detcetion

c)Carrier Sense Multiple Access/Collision Detcetion

d)Collision Sense Multiple Access/Carrier Detcetion

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

a)2B + 1D channal

b)16B + 1D channal

c)23B + 1D channal

d)24B + 2D channal

17)Which of the following cables is used for the RJ11 connectors?

a)Thin Coaxil Cable
b)Thick Coaxil Cable
c)Unshielded Twisted Pair Cable
d)Telephone Cable

18) At which layer of the OSI model, dose SMTP (Simple Mail Transfer Protocol) operte?
a)Application
b)Transport
c)Session
d)Presentation

19)Which layeris borken down ino the MAC an LLC sub layers?
a)Network
b)Data Link
c)Session
d)Physical

20)Old mainframe computers were an example of---------?
a)Distributed computing
b)Client server computing
c)Peer to peer computing
d)Centralized computing

21)What is the speed of ISDN PRI dervice with 30B + 1D channel?
a)2.048 Mbps

b)1.544 Mbps
c)144 kbps

d)128 kbps

22)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

23)At which layer does a Router operte?
a)Network
b)Physical
c)Transport
d)Data link

24)Which of the following network use optical fiber?
a)FDDI
b)ATM
c)Frame Relay
d)Ethernet

e)All of the above

25)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

26)What is the binary value of hex 9F?
a)10011111
b)10111000
c)11110001
d)10001111

27)According to the OSI model,which layer is responsible for routing?
a)Session
b)Data Link
c)Presentation
d)Network

28)According to the OSI model, at which of the following layers internet protocol (IP)addresses are assigned?
a)Session
b)Data Link
c)Presentation
d)Network

29)What do you call a medium which only allows a single channel?
a)Multi mode

b)Single mode

c)Broadband

d)Baseband

30)What do you call a medium which allows multiple channels?

a)Multi mode

b)Single mode

c)Broadband

d)Baseband

31)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

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

a)Multi mode

b)Single mode

c)Broadband

d)Baseband

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

a)Session
b)Data Link
c)Presentation
d)Physical

34)When compared to OSI model, the functionality of the following teo layer is incorporated in the application layer of TCP/IP model?
a)Session, Presentation
b)Transport, Session
c)Session, Physical
d)Presentation, Data Link

35)The hex BF value in decimal is 191. What is the value of hex BF in binary?
a)10100000
b)10111111
c)11111000
d)00111011

36)At which layer does a Hub operate?
a)Network
b)Physical
c)Session
d)Data link

37)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

38)At which layer of the OSI model, does HTTP operste?

a)Application
b)Transport
c)Session
d)Presentation

39)Which of the following cables can be used to directly connect two PCs if onl one of the PC support AUTO-MIX?

a)Straoght cable

b)Cross cable

c)Rillover cable

d)Any of the above

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Tuesday, April 11, 2017

Upwork Networking Concepts Test Answers 2018