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Consider a router that interconnects three subnets: Subnet 1, subnet 2, and Subnet 3. Suppose all of the interfaces in each of these three subnets are required to have the prefix 223.1.17/24. Also suppose that Subnet 1 is required to support up to 125 Interfaces, and Subnet 2 and 3 are each required to support up to 60 interfaces. Provide three network addresses that satisfy these constraints.
Find out how many users a cell can support for a 5% call---blocking rate. Assume that each user produces 35mE of load in the busy hour.
Several graphic files were transmitted by a e-mail from the unknown source to suspect in the ongoing investigation. Lead investigator provides you these graphics files and tells you that at least four messages must be embedded in them.
Suppose a subnet with prefix 128.119.40.128/26. Provide an example of one IP address (of the form xxx.xxx.xxx.xxx) which can be allocated to this network.
The main memory of a computer is organized as 128 blocks, with a block size of 16 words. The cache has eight block frames. Illustrate direct mapping and address bits that recognize the tag field, the block number, and the word number.
Consider a simplified TCP,S AMID algorithm where the congestion size is measured in number of segments not in bytes in additive increase the congestion window size in the long run will these two connections get the same share of the bandwidth o..
Explain how the relative speed of the 100BaseT LANs used at each location compares to accessing the WAN link between the two sites.
Explain these generic and VoIP specific issues. What are the risks? How are these threats being addressed? What can you do as a manager?
Consider transferring an enormous file of L bytes. What is the maximum value of L such that TCP sequence numbers are not exhausted? Give proper justification?
Find out whether it's configured to transfer data at 10 Mbps rather than 100 Mbps, as it should be. How could you find this information and change it, if necessary?
Network simulation on Hierarchical Network Rerouting against wormhole attacks
As security manager at XYZ Corporation, you are responsible for managing intrusion detection environment. If you were given the ability to build the environment from scratch, would you use network based IDS, host based IDS, or a combination?
Twenty-four voice signals are to be multiplexed and transmitted over twisted pair. Determine total bandwidth needed if frequency division multiplexing is used?
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