They selection of the correct punch down tool to use depends on which of the following?
A) Block type
B) Connector type
C) Switch location
D) Demarcation point location
Answer: A) Block type
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In a 32-bit bitmap graphic, eight bits are used to define ____.
A. special effects B. color depth C. density D. grayscale
(Simple Encryption) Some information on the Internet may be encrypted with a simple al- gorithm known as “rot13,” which rotates each character by 13 positions in the alphabet. Thus, 'a' corresponds to 'n', and 'x' corresponds to 'k'. rot13 is an example of symmetric key encryption. With symmetric key encryption, both the encrypter and decrypter use the same key.
a) Write a program that encrypts a message using rot13. b) Write a program that decrypts the scrambled message using 13 as the key. c) After writing the programs of part (a) and part (b), briefly answer the following question: If you did not know the key for part (b), how difficult do you think it would be to break the code? What if you had access to substantial computing power (e.g., supercomputers)? In Exercise 18.25 we ask you to write a program to accomplish this.
Asynchronous update systems for updating replicated database might result in inconsistent databases. Explain why.
What will be an ideal response?
What type of alternate processing facility generally contains all of the hardware, software, and data necessary to assume primary data processing responsibility for the organization in the event of a disaster?
a. Hot site b. Mobile site c. Warm site d. Cold site