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WorksheetsCN Q1
Total questions: 36
Worksheet time: 18mins
What is LAN?
A network of computers within the same building.
A network of computers located in different geographical locations.
A network that creates a safe and secure connection over less secure network.
Complete this sentence: Internet is an example of …………………
LAN
MAN
WAN
PAN
What are fibre-optic cables made of?
Copper
Glass
Aluminium
Iron
Complete the sentence: Fibre-optic cables transmit signals in the form of ………………….. signals
Light
Electrical
Radio
Complete this sentence: A ……………… turns a digital data into an electrical signal
Router
Modem
Hub
Switch
Complete the sentence: ……………… broadcasts data to all devices in the network.
Router
Modem
Hub
Bridge
Which of the following is FALSE about switches?
Switches store the MAC address of devices on a network.
Switches broadcast data to all devices in the network.
Switches filters data packets.
All of the above
Usage of which of the following cables, ensures a faster Ethernet?
Coaxial cable
Optical fibre
Unshielded twisted pair
Speed of Ethernet is not related to the type of cable
Which of the following network hardware connects two separate LAN networks?
Router
Modem
Hub
Bridge
Mapping of the logical address to a physical address
ARP
RARP
ICMP
IP
What is LAN?
A network of computers in the same building.
A long distance communication network.
A high speed network that can carry voice.
A collection of local networks.
1. A group of _______________autonomous computers is called a computer network
independent
desktop
interconnected
stand alone
In which topology Data is only transmitted in only one way
STAR
RING
MESH
BUS
For every computer exactly two neighbours are located in __________ topology.
BUS
RING
STAR
MESH
In bus topology the length of cable is
LIMITS THE SPEED
Not a problem
UNLIMITED
Restricted
GUIDED TRANSMISSION MEDIUM ____________
TWISTED PAIR
COAXIAL CABLE
FIBER OPTIC
ALL THE OPTIONS
Tick all the advantages of computer networks.
Share data with other users
Larger networks can be expensive to setup and staff
Printers can be shared
Communications e.g. email and text, can be sent from one computer to another
Viruses can be spread if not properly protected
Every device is connected to another device via a particular channel,It's Called as
Tree Topology
Bus Topology
Star Topology
Mess Topology
The most common network topology, is laid out so every node in the network is directly connected to one central hub via coaxial, twisted-pair, or fiber-optic cable
Bus Topology
Star Topology
Tree Topology
Ring Topology
Which frame field would most likely contain the highest amount of data?
Addressing field
Frame Start and Stop flags
Data field
Control Field
Which part of the frame field contains the payload?
Control
Data
Addressing
Type
A data link frame has 3 parts except:
Data
Trailer
Access
Header
On receiving a correct frame, the receiver sends a positive acknowledgement.
True
False
What is the process of sending a signal to a client computer that gives it permission to transmit?
polling
controlled access
roll-call polling
The original ALOHA protocol is called
simple ALOHA
pure ALOHA
CSMA
FDMA
__________ augments the CSMA algorithm to detect collision.
CSMA/CD
CSMA/CA
either (a) or (b)
both (a) and (b)
In the _________ method, after the station finds the line idle, it sends its frame immediately. If the line is not idle, it continuously senses the line until it finds it idle.
p-persistent
nonpersistent
1-persistent
none of the above
In ___________ methods, no station is superior to another station and none is assigned the control over another.
controlled access
random access
channelization
none of the above
In the ________method, a station that has a frame to send senses the line. If the line is idle, it sends immediately. If the line is not idle, it waits a random amount of time and then senses the line again.
controlled access
nonpersistent
p-persistent
none of the above
To avoid collisions on wireless networks, ________was invented.
CSMA/CD
CSMA/CA
either (a) or (b)
both (a) and (b)
The Simplest Protocol and the Stop-and-Wait Protocol are for ______ channels.
noiseless
noisy
either (a) or (b)
neither (a) nor (b)
The Carrier Sense Multiple Access/Collision Detection (CSMA/CD) is used to avoid the
errors
multiple access
point to point access
collision
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