Answer:
B. until another thread issues a notify on the semaphore.
Explanation:
A semaphore is a variable that is shared between threads and is not negative. It also acts as a calling mechanism that uses two atomic operations wait and signal for synchronization of processes.
A thread that is waiting for a process can be signaled by another thread.
A semaphore puts a thread to sleep until another thread issues a notify on the semaphore.
The wait operation will get a semaphore or otherwise wait if the busy S semaphore is available.
The signal operation will release a semaphore or wake a process if there is a thread waiting for S.
Answer:
Students become vulnerable to cyberbullying and harassment.
Explanation:
Answer:
Line of sight and rules of composition
Explanation:
He needs the rules of composition in order to use the line of sight
Answer:
Wireless technology.
Explanation:
In earlier years, the broadcasting of information or any video or audio type was done "over-the-air". This means that sharing or the distribution of any content was done "wireless", through the use of transmitters that are wireless or requires no physical connecting wires.
Wireless technological form of broadcasting became the original form of distributing media, be it entertainment, news or information, etc. This 'over-the-air' broadcasting was then replaced by the cabled-wires transmission later on.
Answer:
a) 6
b) 11
c) 11
Explanation:
Given
Prime value q =n= 19
primitive root (a) =10
Alice secret key = 4
Bob secret key = 6
a) The value Alice Sends to Bob
aPrivate key of Alice mod n
= 10^4 mod 19
= 10000 mod 19
=6
b)The value Bob sends to Alice
aPrivate key of Bob mod n
= a3 mod n
= 10^6 mod 19
=1000000 mod 19
= 11
c)
Both the parties calculate the value of secret key at their respective side.
secret key obtained by Alice
= 11
secret key obtained by Bob
= 11
Finally, both the parties obtain the same value of secret key.
The value of common secret key = 17
