Without the preamble, how many basic pieces of information does an Ethernet frame contain?
A. Three
B. Five
C. Six
D. Nine
Answer: B
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The purpose of the 802.11 PHY layer is to format packets to be received by the corresponding network protocol on the receiving device.
Answer the following statement true (T) or false (F)
To move to the first record using the form shown in the accompanying figure, click the ____ button on the Navigation bar.
A. Beginning record B. Start record C. First record D. Goto record
Gifford's quorum consensus replication is in use at servers X, Y and Z which all hold replicas of data items A and B. The initial values of all replicas of A and B are 100 and the votes for A and B are 1 at each of X, Y and Z. Also R = W = 2 for both A and B. A client reads the value of A and then writes it to B.
(i) At the time the client performs these operations, a partition separates servers X and Y from server Z. Describe the quora obtained and the operations that take place if the client can access servers X and Y. (ii) Describe the quora obtained and the operations that take place if the client can access only server Z. (iii) The partition is repaired and then another partition occurs so that X and Z are separated from Y. Describe the quora obtained and the operations that take place if the client can access servers X and Z.
Compare and contrast abstract classes and interfaces. Why would you use an abstract class? Why would you use an interface?
What will be an ideal response?