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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.)
Describe Domain Name System. Describe Hierarchical Namespace. Define Fully Qualified Domain Name and Partially Qualified Domain Name. What is transmission impairment?
Complete the following exercises from FitzGerald and Dennis, Business Data Communications and Networking, 10th ed.
Describe how relative speed of 100BaseT LANs used at each location compares to accessing WAN link between two sites.
Describe the difference between MAC Destination Address in Ethernet header and one found in ARP payload.
Perform the internet search to find a case study which shows how VoIP was beneficial to the organization. Examine the organization's use of VoIP.
Company A has about 100 employees spread over three locations in the same city, all linked by fast network connections. The IT/IS administration is centralized and includes the helpdesk.
A computer system provides protection using the Bell-LaPadula policy. How would a virus spread if: The virus were placed on the system at system low (the compartment that all other compartments dominate)?
Consider improved version of Vigenere cipher, where instead of using multiple shift ciphers, multiple mono-alphabetic substitution ciphers are used.
Input stream to 4B/5B block encoder is 0100 0000 0000 0000 0000 OOOI. Answer the following questions: Determine length of longest consecutive sequence of Os in input?
Formulate an IP that determine a set of disks requiring the minimum amount of storage such that each file is on at least one of the disks.
You are the network administrator for a small manufacturing firm that runs Ethernet. You are currently using hubs and repeaters for connectivity but have decided to upgrade to a Layer 2 (L2) switched infrastructure.
List down all the questions that you will put forward to your client "First Financials" to understand their requirements and needs in terms of hardware, software, bandwidth etc.
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