Answer:
Giving that: The following is a sequence of undo-log records written by 2 transactions T and U:
< START T >;
< T,A,10 >;
< START U >;
< U, B, 20 >;
< T, C, 30 >;
< U, D, 40 >;
< Commit U >;
< T, E, 50 >;
< Commit T >;
1. < START U >
Recovery action in this case will be undo(-1) and undo(0). All restored to its original Value
log records < T, A, 10 >, < T, abort >; as written out
2. < T, E, 50 >
Recovery action in this case will be undo(8) and redo(0). A and C is restored to its original value, B and D are set to 20 and 40
log records <T, C, 30 >, < T, A, 10 >, < T, abort > are written out
3. < Commit T >
Recovery action in this case will be redo(7) and redo(4). A and C are set to 10 and 30, B and D are set to 20 and 40
Answer:
The answer is "SPAN"
Explanation:
The full form of SPAN port is "Switch Port Analyzer", which is used to designed specifically for the interface on a network device, that would be able to monitor all traffic passing across the entire device.
- The use of this port will also call the mirror ports, that is a popular way of gathering data traffic for tracking purposes.
- It is primarily used to access the bus switch and all interfaces, which is usually accessible from data transmission.
Answer:
Variables. A variable is a way of naming and storing a value for later use by the program, ... its type, and optionally, setting an initial value (initializing the variable). ... byte x; x = 0; x = x - 1; // x now contains 255 - rolls over in neg. direction
Explanation:
