It allows power boats to have stability while cruising. The cathedral hull is like a trimaran in terehat it has one main and two side hulls stuck together so that has a somewhat square to rectangular shape and therefore exhibits greater stability than a single hulled boat. It became more popular with the advent of fibreglass boats in the 1960's and '70s.
<u>Solution:</u>
a) False. Piggyback is used only for efficiency. If there's no data packet to be piggybacked to, then B will just send the acknowledgement packet.
b) False. It is the size of the receiver's buffer that's never changed. RcvWindow is the part of the receiver's buffer that's changing all the time depending on the processing capability at the receiver's side and the network traffic.
c) The given statement is True.
d)
False. The sequence number of the subsequent segment depends on the number of 8-byte characters in the current segment.
e) True. Every TCP segment has a current value of rwnd in the receive window.
f) False. Next_RTT = alpha * last_estimated_RTT + (1-alpha)*newly_collected_RTT_sample. In this case even though the last sampleRTT which is the newly_collected_RTT_sample is 1sec, the next_RTT still depends on alpha and last_estimated_RTT. Therefore, the next_RTT is not necessarily greater than 1sec.
g)
False. The acknowledgement number has nothing to do with the sequence number. The ack. number indicates the next sequence number A is expecting from B.
The answer is B: Spelling and Grammar
Nick knows that it is important to check for spelling and grammar mistakes before distributing his content. Fortunately, Microsoft Word makes it easier to spell check his work all at once by running the spelling and grammar checker. To do this on his Word document, he is required to click the Review tab and then click the Spelling or Spelling & Grammar button. If Word finds any mistakes, a dialog box will pop up with an option to correct.
Answer:
See Explanation Below
Explanation:
Follow the steps below.
1. Start Session
2. Assign the session you want to preserve ( $_SESSION['variablex'] ) to a variable
3. Destroy all session (including the one you want, $_SESSION['variablex'])
4. Reassign the contents of the variable you created in (1) above to $_SESSION['variablex'].
The code is as follows (comments explain each line)
<?php
session_start(); // Start session
$variable = $_SESSION['variablex'] ; // assign $_SESSION['variablex'] to $variable
session_destroy(); // Destroy sessions
$_SESSION['variablex'] = $variable; // assign $variable back to $_SESSION['variablex'] to
// You can continue your code (if you have any), here
// End of solution
?>
