Question: 2 1 . Congestion control at the network layer involves two metrics that measure the performance of a network: o Transmission rate and bandwidth. o
Congestion control at the network layer involves two metrics that measure the
performance of a network:
o Transmission rate and bandwidth.
o Load and Delay.
o Load and throughput.
o Delay and throughput.
When to use a connectionorientedvirtual approach?
o If the size of the payload is huge.
o If the distance between source and destination addresses is small.
o If there is a relationship between all packets belonging to a message.
o If the distance between source and destination addresses is large.
A linklayer can check
o Signal
o LAN
o MAC Address
o Frame
To solve looping problem, the IEEE specification requires that switches use the
algorithm, to create a loopless topology.
o Binary search
o Spanning tree
o Shortest path
o Dijkstra
In the stations are automatically connected or disconnected from a VLAN
using criteria defined by the administrator.
o Automatic Configuration
o Rulebased Configuration
o Manual Configuration
o SemiAutomatic Configuration
What is the key feature of a virtual circuit in packet switching?
o Dynamic routing based on congestion levels
o Fixed path determination for all packets in a session
o Payloadbased switching decisions
o Establishing a temporary path for each packet
Which of the following is an invalid IPv address?
o
o
o
o
In a congested network, what does node do if it receives a message from node to slow
down?
o It ignores the message
o It informs node
o It speeds up the data flow
o It slows down the data flow
Identify the class of the following IPv address:
o Class B
o Class A
o Class D
o Class C
Which class of IP address range does the address belong to
o Class C
o Class D
o Class B
o Class A
A can connect the whole system to the Internet.
o Switch
o Router
o Hub
o Repeater
A operates in both the physical layer and datalink layer.
o Hub
o Reapter
o Switch
o Router
A is a multiport device, which receives a signal and before it becomes too weak or
corrupted regenerates and retimes the original bit pattern.
o Repeater
o Switch
o Router
o LAN
A is threelayer devices; it operates in the physicallayer, datalink layer and
network layer.
o Hub
o Repeater
o Switch
o Router
The switch with the smallest ID is selected as the switch.
o Root
o Node
o Arc
o Cost
What is the host ID of the following IPv address:
o
o
o
o
In method, the connection between switches is divided into timeshared
channels.
o Table maintenance
o Frame tagging
o FDMA
o TDM
Classless address is given as find the number of bits for host ID
o
o
o
o
What distinguishes a virtual circuit from a datagram approach in packet switching?
o Independent routing followed by datagrams
o Fixed path nature of virtual circuits
o Dynamic routing used by virtual circuits
o Connectionless characteristic of datagram approach
The number of addresses assigned to an organization in a classless addressing
o must be a power of
o must be a multiple of
o can any number
o must be a multiple of
Which protocol allows automatic address assignment within an organization?
o NAT
o DHCP
o IP
o TCP
How does the connectionoriented virtual circuit approach differ from the
connectionless datagram approach?
o It processes each packet independently
o It establishes a fixed path for all packets in a session
o It routes packets based on the payload content
o It allows packets to take different paths to the destination
It is the number of bits passing through the point in a second.
o 'Processing delay'
o 'Throughput'
o 'Propagation delay'
o 'Transmission delay'
What does NAT enable a user to have internally?
o A single internal address
o A large set of external addresses
o A large set of internal addresses
o Multiple internal addresses
Which layer does DHCP operate at in the OSI model?
o Application layer
o Network layer
o Transport layer
o Data link layer
What is the primary responsibility of the network layer in a connectionless service?
o Delivering packets from the source to the destination
o Guaranteeing errorfree packet transmission
o Ensuring ordered delivery of packets
o Managing the flow control between routers
How many bits reserved for the network ID in a class A IP address?
o bits
o bits
o bits
o bits
I want the correct answer to the subject ##Computer Network##
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