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Q. Block Format and Disk Layout on CD-ROM?
A typical block format is displayed in Figure (a). It comprises the subsequent fields:
Figure: Block Format and Disk Layout on CD-ROM
However what is Min (Minute), Sec (Second) and Sector fields in Header field? The sectors of CD-ROM aren't arranged like sectors in hard disks (Please see Figure (b)). Rather they are all equal length segments. If we rotate CD drive at constant speed the linear velocity of disk surface movement will be higher at the outer side than that of centre portions. To offset this liner speed gap either we store less data on outer sectors or we decrease speed of rotation while reading outer tracks. CD follows later approach which is instead of moving CD drive at constant velocity. It's rotated at variable velocity. Speed or rotation of disk decreases as we move away from centre such that sector's can be read in constant time. This method of reading is known as Constant Liner Velocity (CLV).
Explain FIFO Page replacement algorithm. FIFO policy: This policy only removes pages in the order they entered in the main memory. By using this policy we simply eliminate a
It is not possible to use ABAP/4 Dictionary Structures without an underlying database using LDB. True. You can use additionally related tables, along with the tables explaine
Q. What do you mean by Prototype? A prototyping approach lay emphasis on the construction model of a system. Designing and building a scaled-down though functional version of a
If various load generators need to access the similar physical files, rather than having to remember to copy the files every time they change, each load generator can reference a c
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What are assembler directives? Ans: These are the instructions that direct the program to be executed. They have no binary corresponding so they are called pseudo-opcodes. The
Why some languages are not decidable or even Turing - recognizable? The reason that there are uncountable many languages yet only countably many Turing machines.
What is a disk drive? The electro mechanical mechanism that spins the disk and moves the read/write heads known as disk drive.
A keyword that states the types in a particular namespace can be referred to without requiring their full qualified type names. 'using' reserved word always come with namespace
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