Joystick..................:-)
Answer:
The correct answer to the following question will be Option B.
Explanation:
<u>Open System interconnection:</u>
- A practical and conceptual layout that describes network communication that will be used by the systems that are accessible to interconnection as well as other systems, is called the OSI model. This may also be referred to as the OSI model with seven layers.
- The OSI model aims to direct developers and creators so that they would modularize with the wireless communication devices and computer programs they build, and to promote a consistent structure that defines the features of a network or telecom system.
Therefore, Option B is the right answer.
Answer and Explanation:
Given that total number of records in a file = 100000
Each record consists of= 240 bytes
Given that B= 2400 bytes.
Then total blocks in file = 100000 records * 240 / 2400
= 10000 blocks.
Time that will take for exhaustive read
= s + r + b.btt
= 16 + 8.3 + (10000) * 0.8
= 8024.3 msec
Now as per given X be the number of records that are searched randomly and it takes more than exhaustive read time.
Hence, X (s + r + btt) > 8024.3
X (16+8.3+0.8) > 8024.3
X > 8024.3/25.1
So that, X > 319.69
Hence, atleast 320 random reads should be made to search the file
4- system software
2- application software
4- software package
1- assembler
2- antivirus program
