what is diffrence between circit switching and packet
switching



what is diffrence between circit switching and packet switching..

Answer / hariprasad

In telecommunications, a circuit switching network is one
that establishes a circuit (or channel) between nodes and
terminals before the users may communicate, as if the nodes
were physically connected with an electrical circuit.

The bit delay is constant during a connection, as opposed to
packet switching, where packet queues may cause varying
packet transfer delay. Each circuit cannot be used by other
callers until the circuit is released and a new connection
is set up. Even if no actual communication is taking place
in a dedicated circuit that channel remains unavailable to
other users. Channels that are available for new calls to be
set up are said to be idle.

Ex is Trunk call between two phones(Telephone connectivity)

Packet switching is a digital network communications method
that groups all transmitted data, irrespective of content,
type, or structure into suitably-sized blocks, called
packets. The network over which packets are transmitted is a
shared network which routes each packet independently from
all others and allocates transmission resources as needed.
The principal goals of packet switching are to optimize
utilization of available link capacity, minimise response
times and increase the robustness of communication. When
traversing network adapters, switches and other network
nodes, packets are buffered and queued, resulting in
variable delay and throughput, depending on the traffic load
in the network.


Ex: Internet

Is This Answer Correct ?    2 Yes 1 No

Post New Answer

More CCNA Interview Questions

Inverse ARP serves what purpose? A.) Method for a local router to introduce itself to the remote end of the connection B.) Broadcast a routing table update C.) Identify MAC addresses if the IP address is known D.) Sent every 10 seconds used to verify the Frame Switch is still active

1 Answers  


Which command line statement determines the number of seconds a dialup connection can wait without any traffic before the router hangs up? A.) dialler max-time B.) dialler timeout C.) dialer idle-timeout D.) dialer hang-up E.) disconnect-timer

2 Answers  


what is the binary value of loop back address

13 Answers  


Which command would you type to show SAP and RIP updates you are receiving on an interface? A.) sh ipx servers B.) sh ipx traffic C.) sh ipx interface D.) sh ipx route

2 Answers  


Identify 3 IP applications? A.) AURP B.) ARP C.) Telnet D.) SMTP E.) DNS F.) RARP

2 Answers  






What is the IEEE specification for Spanning Tree Protocol? A.) 802.9 B.) 803.ud C.) 803 D.) 802.1d

1 Answers  


Hi, All I am configuring EIGRP in Packet tracer, after configuring all the things it is not working but in one condition it is working fine if i am putting all my router and network withing one network subnets e.g. 172.16.0.0 or 10.0.0.0 but whenever i am puting different network subnets e.g. in one network it is RA(config-if)#=ip address 10.0.0.1, and in fa0/0= 192.168.1.10 and in RB(config-if)#10.0.0.2 (s1/0) and in S1/1 11.0.0.1 and in fa 0/0 192.168.100.1 ,where as in third router RC(config-if)#=ip address 11.0.0.2 and in fa 0/0 172.16.1.10 and after configuring all this serial is showing up and protocol showing up but eigrp process not taking place after adding eigrp configuration, i tried with "no auto-summary" command but not working.. Suggest me where i missing something? can mail me at : gtech.innovator@gmail.com

20 Answers  


How many LMI types are available on Cisco routers? A.) Four B.) Two C.) Five D.) Three

3 Answers  


Which protocol works at the Internet layer and is responsible for making routing decisions? A.) UDP B.) IP C.) TCP D.) ARP

5 Answers  


In which three situations is a hold down timer reset? (Choose three) A. when the hold down timer expires B. when infinity is finally defined as some maximum number C. when the router exchanges update summaries at area borders D. when the router detects faulty LSPs propagating through the internetwork E. when another update is received indicating a new route with a better metric F. when another update is received indicaing the original route to the network has been restored G. when the router receives a processing task proportional to the number of links in the internetwork

1 Answers  


Which command displays the IPX SAP table? A.) show ipx sap B.) show sap C.) show ipx interface D.) show ipx servers E.) show ipx

1 Answers  


Explain the terms unicast, multicast, broadcast.

0 Answers  


Categories