WorksheetsComputer Networks
Total questions: 43
Worksheet time: 22mins
Transport layer aggregates data from different applications into a single stream before passing it to ____________
Network Layer
Data Link Layer
Application Layer
Physical Layer
Transmission control protocol ___________ .
is a connection-oriented protocol
uses a three way handshake to establish a connection
receives data from application as a single stream
all of the mentioned
An endpoint of an inter-process communication flow across a computer network is called __________.
Socket
Pipe
Port
Machine
Which one of the following is a version of UDP with congestion control?
Data Congestion Control Protocol
Steam Control Transmission Protocol
Structured Stream Transport
User Congestion Control Protocol
Which network topology requires a central controller or hub?
Mesh
Ring
Star
Bus
Data communication system within a building or campus is________
WAN
LAN
MAN
PAN
Which of the following tasks is not done by data link layer?
Framing
Error Control
Flow Control
Channel Coding
Automatic repeat request error management mechanism is provided by ________
logical link control sublayer
media access control sublayer
network interface control sublayer
application access control sublayer
Which of the following is the multiple access protocol for channel access control?
CSMA/CD
CSMA/CA
Both CSMA/CD & CSMA/CA
HDLC
The data link layer takes the packets from _________ and encapsulates them into frames for transmission.
network layer
physical layer
transport layer
application layer
The ____ translates internet domain and host names to IP address.
routing information protocol
domain name system
network time protocol
internet relay chat
Application layer protocol defines:
types of messages exchanged
message format, syntax and semantics
rules for when and how processes send and respond to messages
all of the mentioned
The protocol data unit(PDU) for the application layer in the Internet stack is?
Segment
Datagram
Message
Frame
Which of the following is public IP address ?
10.15.14.12
192.168.52.62
172.32.1.1
None of the Above
If subnet mask 255.255.255.224, which of the following will be Direct Broadcast address ?
202.15.19.127
202.15.19.63
Both a and b
None of the above
In class C , if subnet mask is 255.255.255.224 then calculates number of subnet?
6
8
4
None of the above
If Direct Broadcast Address of subnet is 201.15.16.31. Which of the following will be subnet mask ?
255.255.255.240
255.255.255.192
255.255.255.198
None Of the Above
Transmission media are usually categorized as:
Fixed or unfixed
Guided or unguided
Determinate or indeterminate
Metallic or non-metallic
Transmission media lie below
Physical
Application
Data link
Network
Which of the following uses guided media?
Cellular telephone system
Radio broadcast
Local telephone system
Satellite system
Protocol for Network virtual terminal is___________
FTP
HTTP
Telnet
SMTP
Which two layers of OSI are merged in network access layer of TCP IP model?
Application, Presentation
Data link, Physical
Network, Data link
None
Which one of them is not application layer protocol?
TCP
HTTP
FTP
SMTP
Segmentation and reassembly is done at __________ layer
Session
Presentation
Transport
Data Link
Framing is done at _________ layer
Physical
Transport
Data Link
None
NAK is a _____________ acknowledgement
Positive
Negative
Neutral
None of the above
The speed mismatch between the sender and receiver is called ______________
Error control
speed control
Flow Control
Transmission control
Data in Computer Networks is sent in the form of
Boxes
Baskets
Groups
Packets
The ___________ layer is the lowest layer in the OSI model
Physical
Transport
Session
Application
The __________ layer is the top most layer in the OSI model
Physical
Transport
Session
Application
The _________ layer is responsible for node to node delivery of packets
Physical
Transport
Data Link
Application
The ________ layer is responsible for routing packets within or across the Network
Physical
Network
Data Link
Application
Encryption is handled by the _________ layer
Data Link
Transport
Session
Presentation
www is a ___________ layer protocol
physical
Application
Data Link
Session
A set of rules that govern data communication between the sender and receiver is called
Rule
Protocol
Law
Option
In Simplex communication, _________________
only one party can transmit data at the same time
Both parties can transmit data at the same time
Both parties can transmit data but not at the same time
No party can transmit data
In half duplex communication_________________
only one party can transmit data
Both Parties can transmit data but not at the same time
Both parties can transmit the data at the same time
No party can transmit data
Multiplexing ______________
devides the line into multiple channels
Combine many channels into one line
is the same as modulating
is the same as demodulating
As a signal travels through any medium ,its strength decreases due to ______________
Noise
Delay distortion
Attenuation
Re-Transmission
Some Electromagnetic energy can be inserted somewhere during transmission ,which is normally called _____________
Noise
Delay distortion
Attenuation
Re-transmission
The Receiver sends a ___________ back to the sender if everything was OK
NAK
PAK
ACK
NCK
In Full duplex Communication ,_______________
Only one party can transmit data
Both parties can transmit data,but not at the same time
Both parties can transmit data at same time
No party can transmit data
The Process of handing over the signal from the old Channel to the new one is called
Transfer
Change
modification
Hand-off
