Recent questions tagged peterson-davie

1 1 vote
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Suppose that forwarding tables are all established and then C-E link fails.Question : What update will be there in the C and E tables after failure and which tables info...
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Graph links are given as A-C=3,A-D=8,B-E=2,C-F=6,C-E=1,D-E=2 (A)Give global distance vector table (B)Routing table at node D by Link State algorithm (C) Suppose the forwa...
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Suppose an $IP$ packet is fragmented into $10$ fragments, each with a $1$% (independent) probability of loss. To a reasonable approximation, this means there is a $10$% c...
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Suppose an $IP$ packet is fragmented into $10$ fragments, each with a $1$% (independent) probability of loss. To a reasonable approximation, this means there is a $10$% c...
0 0 votes
2 2 answers
795
795 views
Suppose an $IP$ packet is fragmented into $10$ fragments, each with a $1$% (independent) probability of loss. To a reasonable approximation, this means there is a $10$% c...
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1 1 answer
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Path $MTU$ is the smallest $MTU$ of any link on the current path (route) between two hosts. Assume we could discover the path $MTU$ of the path used in the previous exerc...
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956
956 views
Suppose a $TCP$ message that contains $1024$ bytes of data and $20$ bytes of $TCP$ header is passed to $IP$ for delivery across two networks interconnected by a router (i...
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Some signalling errors can cause entire ranges of bits in a packet to be overwritten by all $0$s or all $1$s. Suppose all the bits in the packet, including the Internet c...
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Why does the Offset field in the $IP$ header measure the offset in $8$-byte units? (Hint: Recall that the Offset field is $13$ bits long.)
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What aspect of $IP$ addresses makes it necessary to have one address per network interface, rather than just one per host? In light of your answer, why does $IP$ tolerate...
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Suppose a $10$-Mbps Ethernet hub (repeater) is replaced by a $10$-Mbps switch, in an environment where all traffic is between a single server and $N$ "clients." Because a...
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438
438 views
Suppose a $10$-Mbps Ethernet hub (repeater) is replaced by a $10$-Mbps switch, in an environment where all traffic is between a single server and $N$ "clients. "Because a...
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550
550 views
A stage of an $n \times n$ banyan network consists of $(n/2) 2 \times 2$ switching elements. The first stage directs packets to the correct half of the network, the next ...
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316 views
Suppose that a switch is designed to have both input and output $FIFO$ buffering. As packets arrive on an input port they are inserted at the tail of the $FIFO$. The swit...
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292 views
Suppose that a switch is designed to have both input and output $FIFO$ buffering. As packets arrive on an input port they are inserted at the tail of the $FIFO$. The swit...
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311
311 views
Suppose that a switch is designed to have both input and output $FIFO$ buffering. As packets arrive on an input port they are inserted at the tail of the $FIFO$. The swit...
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281 views
Suppose that a switch is designed to have both input and output $FIFO$ buffering. As packets arrive on an input port they are inserted at the tail of the $FIFO$. The swit...
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0 0 answers
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381 views
Suppose a switch is built using a computer workstation and that it can forward packets at a rate of $500,000$ packets per second, regardless (within limits) of size. Assu...
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1 answers 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 interfa...
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Suppose a workstation has an $I/O$ bus speed of $800$ Mbps and memory bandwidth of $2$ Gbps. Assuming direct memory access (DMA) is used to move data in and out of main m...
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576
576 views
Cell switching methods (like $ATM$) essentially always use virtual circuit switching rather than datagram forwarding. Give a specific argument why this is so (consider th...
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378 views
What percentage of an $ATM$ link's total bandwidth is consumed by the $ATM$ cell headers? Ignore padding to fill cells or $ATM$ adaptation layer headers.
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Suppose a bridge has two of its ports on the same network. How might the bridge detect and correct this?
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Give forwarding tables for switches $S1$ to $S4$ in Figure 3.46. Each switch should have a default routing entry, chosen to forward packets with unrecognized destination ...
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For the network given in Figure 3.45, give the datagram forwarding table for each node. The links are labeled with relative costs; your tables should forward each packet ...
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Suppose the Ethernet transmission algorithm is modified as follows: After each successful transmission attempt, a host waits one or two slot times before attempting to tr...
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445 views
Suppose the Ethernet transmission algorithm is modified as follows: After each successful transmission attempt, a host waits one or two slot times before attempting to tr...
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598
598 views
Suppose the Ethernet transmission algorithm is modified as follows: After each successful transmission attempt, a host waits one or two slot times before attempting to tr...
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0 0 answers
453
453 views
Suppose the round-trip propagation delay for Ethernet is $46.4 \mu s$. This yields a minimum packet size of $512$ bits ($464$ bits corresponding to propagation delay $+48...
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729
729 views
Suppose the round-trip propagation delay for Ethernet is $46.4 \mu s$. This yields a minimum packet size of $512$ bits ($464$ bits corresponding to propagation delay $+48...