Explain how a CRC is used to figure out whether the data received is accurate or not.
What will be an ideal response?
The NIC sending the frame does a little math to make the CRC. Using binary arithmetic, it works a division problem on the data using a divisor called a key. The result of this division is the CRC. When the frame gets to the receiving NIC, it divides the data by the same key. If the receiving NIC's answer is the same as the CRC, it knows the data is good; if it is not good, the frame is dropped.
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Why should we describe the time complexity of the binary search algorithm as O( lg n )?
A. Its time complexity varies, but it is always worse than O( lg n ). B. Its time complexity varies, but it is always better than O( lg n ). C. Its time complexity varies, but it is never worse than O( lg n ). D. Its time complexity varies, but it is never better than O( lg n ).
When a form control is active it is said to have ________
A) focus B) been enabled C) attention D) control
How does the History panel work?
What will be an ideal response?
Critical Thinking Questions Case 8-1 ? You have been chosen to be a teaching assistant at your school. A student comes to you with questions about storage devices. The student asks you which type of storage device is best to store the operating system and applications. You tell her that a(n) ______ is a good option.
A. SSD B. USB flash drive C. Memory card D. Optical disc