Answer:
Option D is correct.
Explanation:
Cassandra labeling information with such a gravestone indicates should restart transmitting an erase request to such a duplicate that had been down earlier of deletion.
Cassandra may not instantly delete information labeled for removal from disc the removal of identified information takes place throughout compaction a deleted section may reappear when a maintenance is never regularly carried out.
Answer:
string1 = "this is string 1"
string2 = " this is string 2"
print(string1 + string2)
Explanation:
the string1 variable is assigned with a string value(aka. str)
string2 is also a variable assigned with a slightly different string value
the 3rd line then prints string 1 and 2 to the console.
Physical parts of computer: Computer Hardware
Explanation:
A.)
we have two machines M1 and M2
cpi stands for clocks per instruction.
to get cpi for machine 1:
= we multiply frequencies with their corresponding M1 cycles and add everything up
50/100 x 1 = 0.5
20/100 x 2 = 0.4
30/100 x 3 = 0.9
CPI for M1 = 0.5 + 0.4 + 0.9 = 1.8
We find CPI for machine 2
we use the same formula we used for 1 above
50/100 x 2 = 1
20/100 x 3 = 0.6
30/100 x 4 = 1.2
CPI for m2 = 1 + 0.6 + 1.2 = 2.8
B.)
CPU execution time for m1 and m2
this is calculated by using the formula;
I * CPI/clock cycle time
execution time for A:
= I * 1.8/60X10⁶
= I x 30 nsec
execution time b:
I x 2.8/80x10⁶
= I x 35 nsec
Uhhhh I believe it’s true if it’s wrong I’m srry ....