Assuming you're running Windows, click the start button, and then search for "Device Manager" (or open CMD or PowerShell and type devmgmt.msc). Look at the list of devices. If Bluetooth is there, you have it; if it's not there, you don't.
Answer:
ASK
Explanation:
The correct answer is ASK which denotes Amplitude Shift Keying. This is essentially a type of amplitude modulation which represents the binary data that comes varied forms right in the amplitude of a signal.
Now the reason why It is the most susceptible technique to noise is due to the fact that between frequency, phase & amplitude, amplitude is the one that is most susceptible to being affected by noise when compared to the other two.
Answer:
The trigger code is given below
create trigger F1_Del
after delete on Friend
for each row
when exists (select * from Friend
where ID1 = Old.ID2 and ID2 = Old.ID1)
begin
delete from Friend
where (ID1 = Old.ID2 and ID2 = Old.ID1);
end
create trigger F1_Insert
after insert on Friend
for each row
when not exists (select * from Friend
where ID1 = New.ID2 and ID2 = New.ID1)
begin
insert into Friend values (New.ID2, New.ID1);
end
