What is the function of a page file (swap file) in virtual memory?
A. To speed up file access
B. To store data that is not currently in physical RAM on disk
C. To manage cache memory
D. To provide a backup of the operating system
Answer: Option B
Solution (By JKSSB Mock Tests)
The page file is a portion of the hard disk used as additional RAM (swap space) for virtual memory, allowing the system to move inactive pages out of physical RAM.
Explanation:
1x speed for Blu-ray is defined as 36 MB/s (or 36 Mbps? Actually, it's 36 Mbit/s? Wait: 1x Blu-ray is 36 Mbps (4.5 MB/s). Let's check: 1x DVD is 11.08 Mbps (1.32 MB/s), 1x CD is 150 KB/s. Blu-ray 1x is 36 Mbps = 4.5 MB/s. But common speeds are faster. Let me verify: Actually, 1x Blu-ray = 36 Mbit/s (4.5 MB/s). Some sources say 36 Mbit/s = 4.5 MB/s. So option A (4.5 MB/s) is correct. However, I've also seen 1x Blu-ray = 36 MB/s? Let's recall: Blu-ray standard defines 1x at 36 Mbps (megabits per second). So 4.5 MB/s. So correct answer is A: 4.5 MB/s.
Explanation:
SRAM is substantially faster than DRAM because it uses a multi-transistor configuration (flip-flops) that retains state instantly without periodic electrical refreshing.
No comments yet. Be the first to start the discussion!