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An increasingly common mechanism is to ask for several pieces of security information rather than one. A call center might ask not just for your mother's maiden name, a password, and the amount of your last purchase, but also your dog's nickname and your favorite color. Such schemes need careful evaluation of their usability and effectiveness using the tools of applied psychology. Design such a password protocol and evaluate its usability and effectiveness. (A verbal text description is enough.)
A network administrator faces when dealing with a client/server network is TCP/IP connectivity between computers in the network.
Let N users participating in the audio/video conference by using IP multicasting. Each user is equipped with the microphone, camera, and speakers. How many distinct canonical names are required?
Zippy Car, a medium-sized business wants to house the company-owned web servers in a facility that offers round-the-clock controlled access and high-bandwidth internet access.
Investigate the history of the CSIRO Wifi patent which was recently up-held in courts in the United States. This patent covers significant aspects of the OFDM implementation which is used in modern Wifi devices.
Suppose you could multiplex these signals directly onto SONET STS-1 channel how many MP3 songs could be trasmitted simultaneously?
Acme Computing Corp. has remote sites in Port Clinton and Napoleon in addition to their main site in Toledo. There are currently 29 devices connected to the network in Toledo.
In original classful address scheme, was it possible to find out the class of the address from address itself? Describe.
If you have a class B network and want to divide it into subnets, each with 126 hosts, which subnet mask should you use? What are the four addresses (broadcast and network number) for the network starting at 131.204.18?
Subnet 3 is required to support up to 16 interfaces. Give three network addresses (of the form a.b.c.d/x) which satisfy these constraints.
Conduct Internet search to locate case study which illustrates how VoIP was beneficial to the organization. Why did organization need a VoIP solution?
Packet switch receives a packet and determines outbound link to which packet should be forwarded. Determine the queuing delay for packet? Show work.
Which type of network provides customers with limited access to corporate data such as inventory, parts lists, and orders?
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