DB Challenge

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DB Challenge Quiz

Test your knowledge with our engaging DB Challenge Quiz! Dive into a variety of topics ranging from memory systems to resource management. This quiz is designed for students and professionals alike seeking to enhance their understanding of database concepts.

Multiple choice questions
Covering essential database and memory management topics
Immediate feedback on your answers

14 Questions4 MinutesCreated by CodingEagle47

Hyponymy

It may be defined as the relationship between a generic term and instances of that generic term. Here the generic term is called hypernym and its instances are called hyponyms. For example, the word color is hypernym and the color blue, yellow etc. Are hyponyms.

Hyponymy

1. Which of the following is NOT a valid deadlock prevention scheme?

Request and all required resources be allocated before execution.

Never request a resource after releasing any resource

Number the resources uniquely and never request a lower numbered resource than the last one requested.

2.A graphics card has on board memory of 1 MB. Which of the following modes can the card not support?

1600 x 400 resolution with 256 colours on a 17 inch monitor

1600 x 400 resolution with 16 million colours on a 14 inch monitor

800 x 800 resolution with 256 colours on a 14 inch monitor

3. Consider a virtual memory system with FIFO page replacement policy. For an arbitrary page access pattern, increasing the number of page frames in main memory will

Always decrease the number of page faults

Always increase the number of page faults

Some times increase the number of page faults

5. Consider a disk pack with 16 surfaces, 128 tracks per surface and 256 sectors per track. 512 bytes of data are stored in a bit serial manner in a sector. The capacity of the disk pack and the number of bits required to specify a particular sector in the disk are respectively:

256 Mbyte, 19 bits

253 Mbyte, 19 bits

256 Mbyte, 18 bits

6.Suppose the time to service a page fault is on the average 10 milliseconds, while a memory access takes 1 microsecond. Then a 99.99% hit ratio results in average memory access time of

9.999 microseconds

1.9999 microseconds

1.9999 milliseconds

7.Which of the following need not necessarily be saved on a context switch between processes?

General purpose registers

Translation look-aside buffer

Both

10.Which of the following scheduling algorithms is non-preemptive?

Round Robin

First-in-first-out

Multilevel Queue Scheduling

DB Challenge

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