Networking Concept Test
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 binary value of hex BF?
a.
10100000
b.
10111111
c.
11111000
d.
00111011
At
which layer does a Hub operate?
a.
Network
b.
Physical
c.
Session
d. Data
Link
What
is the speed of a E1 line?
a.
128kbps
b.
144kbps
c. 2
048Mbps
d. 1
544 Mbps
Which
of the following is an 'end-to-end' layer?
a.
Physical
b. Data
Link
c.
Network
d.
Transport
What
is a checksum?
a.
An error detection technique
b. A
network trouble shooting device
c.
Another name for protocol header
d.
Another name for protocol trailer
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 is responsible for sending acknowledgements?
a.
Session
b.
Transport
c. Data
Link
d.
Presentation
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 fibre optic lines
d.
Connecting to the Internet using wireless modems
Which
cable used for RJ11 connectors?
a. Thin
Coaxial Cable
b.
Thick Coaxial Cable
c.
Unshielded Twisted Pair Cable
d.
Telephone Cable
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
Which
of the following is not a fiber optic based network?
a. FDDI
b. ATM
c.
Frame Relay
d.
Ethernet
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 issue of network topologies (star,
ring, bus etc)?
a.
Network
b. Data
Link
c.
Transport
d.
Physical
At
which layer of the OSI model, does SMTP (Simple Mail Transfer Protocol)
operate?
a.
Application
b.
Transport
c.
Session
d.
Presentation
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
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
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
do you call a medium which allows multiple channels?
a.
Multi mode
b.
Single mode
c.
Broadband
d.
Baseband
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
layer of the OSI model corresponds to TCP?
a.
Network
b.
Transport
c.
Session
d. Data
Link
What
is the full form of DSL?
a.
Digital Subscription Line
b.
Digital Super Link
c.
Digital Speed Line
d.
Digital Subscriber Line
What
is the IEEE 802.2 standard related to?
a.
Definition of the Logical LinkControl (LLC) sublayer
b.
Token Ring
c.
Token Bus
d.
Ethernet
How
many bits of the MAC address are used by OUI portion?
a. 32
bits
b. 48
bits
c.
24 bits
d. 16
bits
What
is the binary value of 157?
a.
11000111
b.
10111001
c.
11100011
d.
10011101
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
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
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
is the speed of ISDN PRI service with 30B + 1D channel?
a. 2
048 Mbps
b. 1
544 Mbps
c.
144Kbps
d.
128Kbps
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
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
network topology does FDDI use?
a. Star
b.
Ring
c. Bas
d. Mesh
Which
layer of the OSI model corresponds to IP?
a.
Network
b.
Physical
c.
Session
d. Data
Link
Which
network topology does Ethernet use?
a. Star
b. Ring
c. Bas
d.
Mesh
According
to the OSI model, at which layer are network addresses assigned?
a.
Session
b. Data
Link
c.
Presentation
d.
Network
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
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
Which
of the following protocols does not support Routing?
a.
IPWSPX
b.
TCP/IP
c.
NetBEUI
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