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WorksheetsCommunication Networks
Total questions: 50
Worksheet time: 38mins
The Internet model consists of _______ layers.
Three
Five
Seven
Eight
The process-to-process delivery of the entire message is the responsibility of the _______ layer.
Network
Transport
Application
Physical
The _______ layer is the layer closest to the transmission medium.
Physical
Data link
Network
Transport
Which layer is responsible for routing packets across the network?
Application
Transport
Network
Data link
The _______ layer provides services for email and file transfer.
Physical
Transport
Network
Application
Which layer is responsible for error detection and correction?
Data link
Network
Transport
Application
Which layer is responsible for establishing, managing, and terminating connections?
Data link
Network
Transport
Application
The _______ layer is responsible for the physical transmission of data over a medium.
Network
Data link
Physical
Transport
Which layer handles the segmentation of data into smaller packets?
Network
Data link
Transport
Application
Why was the OSI model developed?
Manufacturers disliked the TCP/IP protocol suite.
The rate of data transfer was increasing exponentially
Standards were needed to allow any two systems to communicate
None of the above
The physical layer is concerned with the movement of _______ over the physical medium.
programs
dialogs
protocols
bits
Which layer is responsible for flow control?
Transport
Data link
Network
Application
What is the primary function of the session layer?
To route packets
To handle data encryption
To manage sessions between applications
To provide end-to-end communication
Which layer is responsible for translating between different data formats?
Transport
Session
Presentation
Application
Which layer is responsible for ensuring that data is sent and received in the correct order?
Application
Transport
Network
Data link
What is the main purpose of the data link layer?
To route packets across the network
To handle data encryption
To manage sessions between applications
To provide error detection and correction
Which layer is responsible for providing network services to applications?
Transport
Application
Presentation
Session
What is the primary role of the presentation layer?
To manage data sessions
To ensure reliable data transfer
To route data packets
To provide data formatting and encryption
Which layer is responsible for the logical addressing of devices on a network?
Data link
Network
Transport
Application
Which of the following technologies requires a logical connection between the sending and receiving devices?
Circuit switching
Virtual-circuit packet switching
Message switching
High-density circuit switching
A local telephone network is an example of a _______ network.
Packet switched
Circuit switched
Bit switched
Line switched
What is the primary function of a switch in a network?
To manage user access to network resources
To encrypt data for secure transmission
To route data between different networks
To connect multiple devices within the same network
Which of the following is a benefit of using a managed switch over an unmanaged switch?
No configuration required
Enhanced security features
Lower cost
Simpler setup
In a network, what does VLAN stand for?
D) Variable Link Access Network
A) Virtual Local Area Network
B) Variable Local Area Network
C) Virtual Link Access Network
What is the significance of network topology in the design of a network?
A) It determines the physical layout of the network devices
B) It affects the performance and scalability of the network
C) It defines the protocols used for data transmission
D) It is irrelevant to network performance
Which of the following is a common type of network topology?
D) Triangle
C) Square
B) Circle
A) Star
How does a mesh topology differ from a star topology in terms of redundancy?
D) Both topologies provide the same level of redundancy
A) Mesh topology has no redundancy
C) Mesh topology provides greater redundancy
B) Star topology has more redundancy
In _________ systems, resources are allocated on demand.
a) packet switching
b) circuit switching
c) line switching
d) frequency switching
It is best suited for small networks, Advantages of :
A) BUS
B) Star
C) Mesh
D) Tree
Which of the following services is not provided by wireless access point in 802.11 WLAN?802.11 WLAN?
a) Association
b). Disassociation
c). Error correction
d). Integration
Bridge works in which layer of the OSI model?
a) Application layer
b)Transport layer
c)Network layer
d) Data link layer
The Internet is an example of
a) Cell switched network
b) circuit switched network
c) Packet switched network
d) All of above
What does protocol defines?
a) Protocol defines what data is communicated.
b) Protocol defines how data is communicated.
c) Protocol defines when data is communicated.
d) All of above
can detect burst error of length less than or equal to degree of the polynomial and detects burst errors that affect odd number of bits.
a) Hamming Code
b) CRC
c) VRC
d) None of the above
Which of the following network access standard is used for connecting stations to a circuit-switched network?
a) X.3
b) X.21
c) X.25
d) X.75
Which of the following tasks is not done by data link layer?
a) framing
b) error control
c) flow control
d) channel coding
The combination of an IP address and a port number is known as
a) Network number
b) Socket address
c) Subnet mask number
d) MAC address
Which of the following is reliable communication?
a) TCP
b) IP
c) UPD
d) All of them
Which of the following is not associated with the session layer?
a) Dialog control
b) Token management
c) Semantics of the information transmitted
d) Synchronization
Which of the following TCP/IP protocol is used for transferring electronic mail messages from one machine to another?
a) FTP
b) SNMP
c) SMTP
d) RPC
Automatic repeat request error management mechanism is provided by______
a) Logical link control sublayer
b) Media access control sublayer
c) Network interface control sublayer
d) Application access control sublayer
When 2 or more bits in a data unit has been changed during the transmission, the error is called ____________
a) Random error
b) Burst error
c) Inverted error
d) Double error
CRC stands for __________
a) Cyclic redundancy check
b) Code repeat check
c) Code redundancy check
d) Cyclic repeat check
What type of network topology connects all devices to a central hub?
B) Star
A) Mesh
D) Bus
C) Ring
Which protocol is primarily used for secure data transmission over the Internet?
A) HTTP
B) FTP
C) HTTPS
D) SMTP
What is the main purpose of a firewall in a network?
A) To increase network speed
B) To provide data encryption
C) To monitor and control incoming and outgoing network traffic
D) To connect different networks
What is the primary function of the network layer in the OSI model?
B) To route packets between devices
A) To provide error detection and correction
D) To format data for presentation
C) To manage sessions between applications
Which of the following is a characteristic of a peer-to-peer network?
D) Limited scalability
A) Centralized control
B) All nodes have equal privileges
C) Requires a dedicated server
Which of the following is a function of the transport layer?
a) Routing packets
b) Data encryption
c) End-to-end communication
d) Error detection
What does NAT stand for in networking?
c) Network Application Transfer
b) Network Access Technology
d) Network Address Transfer
a) Network Address Translation
