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Problem
Assume we have a very simple message digest. Our unrealistic message digest is just one number between 0 and 25. The digest is initially set to 0. The cryptographic hash function adds the current value of the digest to the value of the current character (between 0 and 25). Addition is in modulo 26. What is the value of the digest if the message is "HELLO"? Why is this digest not secure?
Message length is distributed exponentially with mean length of 14,400 characters. Line speed is 9600 bps. Determine the mean waiting time in the switching center?
Discuss the advantages of some of the current technologies described in our reading this week including VoIP, Unified Communications, Virtual Private Networks, Wi-Fi and wireless technologies like RFID and Wireless Sensor Networks
Give clearly defined examples of two objects in a computer system configuration whose security level could change during the process of execution.
List four WAN technologies that are carried over the PSTN.
Display the valve stored in a num by derefecing it
Identify threats and vulnerabilities.
you are the network engineer contracted to established a wan connectivity between two office locations for a local
questionthe isp and the web developerisp x is the internet service provider that operates in a particular country. a
Describe the advantages and disadvantages of several different Web 2.0 technologies. How could these technologies be used for good? What types of problems might these technologies cause?
Name one acceptable form of 802.11 wireless LAN security/encryption AND name one unacceptable form.
Capturing and Identifying the Three-way Handshake Time Required: 30 minutes Objective: Determine which packets create the three-way handshake used.
question 1 based on the barr 2010 article how does ibms cloud computing services compare with those provided by
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