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Recent questions tagged routers-bridge-hubs-switches

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When is TTL decreased? 1- only at routers? 2- any device having network layer (including hosts in between the path) : example: source subnet has ethernet and destination subnet has token ring : all hosts and routers that come in packets.s path will decrease TTL or only router will decrease TTL?
asked Jun 14, 2018 in Computer Networks bts 194 views
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a) Assume each router implements FIFO queuing. If each flow consists of an identical, 1-Mbps constant bit rate UDP flow with equal packet sizes, what will the resulting rate be for each flow? You can assume that FIFO drops packets with uniform probability. b) Now consider ... and each flow is assigned a weight equal to its number (i.e., flow F4 gets weight 4). What are the resulting throughputs?
asked Jan 29, 2018 in Computer Networks Balaji Jegan 89 views
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Network A consists of a hub with twenty ports, each connected to exactly one end host. Network B is identical, except the hub is replaced by a switch. Which of the following are true? If the end hosts in both networks try to send the same set of ... can be successfully transferred simultaneously between the end hosts. The nodes in Network B can be further apart than the nodes in Network A.
asked Dec 4, 2017 in Computer Networks vijay_jr 374 views
1 vote
2 answers
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The device which connects dissimilar $LANs$ of different topologies using different sets of communication protocols so that information can flow from one to another is called : Router Bridge Gateway Switch
asked Sep 24, 2017 in Computer Networks rishu_darkshadow 913 views
1 vote
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Explain the followīng sentences with an example ? A). "Bridge is used to connect different LAN's in the same network" B). "Router is used to connect different similar networks" C). "Gateway is used to connect different dissimilar networks"
asked Oct 19, 2016 in Computer Networks Kapil 358 views
2 votes
1 answer
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When a bridge forwards an Ethernet frame, the Ethernet frame contains: The broadcast address as its source address The next bridge’s LAN address for its destination address The bridge’s LAN address for its source address None of these
asked Jul 14, 2016 in Computer Networks Payal Rastogi 130 views
5 votes
1 answer
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One SAN switch has 24 ports. All 24 supports 8 Gbps Fiber Channel technology. What is the aggregate bandwidth of that SAN switch? 96 Gbps 192 Mbps 512 Gbps 192 Gbps
asked Jun 23, 2016 in Computer Networks jothee 2k views
5 votes
1 answer
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A T-switch is used to Control how messages are passed between computers Echo every character that is received Transmit characters one at a time Rearrange the connections between computing equipments
asked Jun 19, 2016 in Computer Networks jothee 2.5k views
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2 answers
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A bridge has access to ________ address in the same network. Physical Network Datalink Application
asked Jun 5, 2016 in Computer Networks makhdoom ghaya 3.7k views
0 votes
1 answer
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Suppose a workstation has an $I/O$ bus speed of $1$ Gbps and memory bandwidth of $2$ Gbps. Assuming $DMA$ is used to move data in and out of main memory, how many interfaces to $100$-Mbps Ethernet links could a switch based on this workstation handle?
asked Apr 24, 2016 in Computer Networks makhdoom ghaya 216 views
13 votes
1 answer
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Suppose two nodes, A and B, are attached to opposite ends of a 900 m cable, and that they each have one frame of 1000 bits (including all headers and preambles) to send to each other. Both nodes attempt to transmit at time t=0. Suppose there are four repeaters between A and ... 100 *10-6 sec. For 2nd ques.I am not getting how to take collision and back off delay... then how to solve for bridges.
asked Nov 19, 2015 in Computer Networks khushtak 3.1k views
19 votes
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Which of the following is NOT true with respect to a transparent bridge and a router? Both bridge and router selectively forward data packets A bridge uses IP addresses while a router uses MAC addresses A bridge builds up its routing table by inspecting incoming packets A router can connect between a LAN and a WAN
asked Sep 19, 2014 in Computer Networks Kathleen 4.6k views
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