Write a sed command that copies a file to standard output, removing all lines that begin with the word Today.
What will be an ideal response?
$ sed '/^Today/ d' filename
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Estimate the time required to crack a 56-bit DES key by a brute-force attack using a 500 MIPS (million instruction per second) workstation, assuming that the inner loop for a brute-force attack program involves around 10 instructions per key value, plus the time to encrypt an 8-byte plaintext
What will be an ideal response?
Classify each of the followings in terms of unicast and multicast:
a. A student speaking to a friend on a wireless phone b. ii. An executive speaking on a conference-phone with managers in different cities. c. iii. A teacher lecturing in a classroom. d. iv. A child playing with another child using a “walkie-talkie”. e. v. The president addressing the nation on television Consider inter-human communications.
Which of the following is NOT a ‘start' life cycle event?
A. Application_Launching() B. onStart() C. InitializeComponent() D. application:DidFinishLaunchingWithOptions:
The breakpoint:
A) is a range containing a lookup table. B) is a reference to a cell containing a value to look up. C) is the lowest value for a specific category or series in a lookup table. D) looks up a value and returns a related result from the lookup table.