Explain the cut-through architecture including its advantages and disadvantages.?
What will be an ideal response?
In a cut-through architecture, the data frame begins to exit the switch almost as soon as it begins to enter the switch. In other words, a cut-through switch does not store a data frame and then forward it. In contrast, a store-and-forward device holds the entire frame for a small amount of time while various fields of the frame are examined, a procedure that diminishes the overall network throughput. The cut-through capability allows a switch to pass data frames very quickly, thus improving the overall network throughput. The major disadvantage of cut-through architecture is the potential for the device to forward faulty frames. For example, if a frame has been corrupted, a store-and-forward device will input the frame, perform a cyclic checksum, detect the error, and perform some form of error control. A cut-through device, however, is so fast that it begins forwarding the frame before the cyclic checksum field can be calculated. If there is a cyclic checksum error, it is too late to do anything about
it. The frame has already been transmitted. If too many corrupted frames are passed around the network, network integrity suffers.?
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Explain the purpose and scope of database security.
What will be an ideal response?
Here are four letters: A B C D
While keeping all four letters on the same line, use proximity to group B and C and make each of A and D into a group of one.
A(n) __________ file uses keywords such as User-agentandDisallow.
Fill in the blank(s) with the appropriate word(s).
Consider a 2-by-3 integer array t.
a) Write a declaration for t. b) How many rows does t have? c) How many columns does t have? d) How many elements does t have? e) Write the names of all the elements in row 1 of t. f) Write the names of all the elements in column 2 of t. g) Write a single statement that sets the element of t in the first row and second column 2 to zero. h) Write a series of statements that initialize each element of t to zero. Do not use a loop. i) Write a nested for statement that initializes each element of t to zero. j) Write a statement that inputs the values for the elements of t from the keyboard. k) Write a series of statements that determine and print the smallest value in array t. l) Write a statement that displays the elements in row 0 of t.