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# Placement Questions & Answers :: Cisco

## Total View: 19.66K

#### Co. Cloud

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41. Thread synchronization is required because

Explanation:

Here is no explanation for this answer

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42. In binary search tree which traversal is used for getting ascending order values

Explanation:

Here is no explanation for this answer

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43. What is the efficiency of merge sort

Explanation:

Here is no explanation for this answer

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44. Preorder of A*(B+C)/D-G

Explanation:

Here is no explanation for this answer

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45. Consider a machine with 64 MB physical memory and a 32-bit virtual address space. If the page size s 4KB, what is the approximate size of the page table?

Explanation:

Number of pages = 232 / 4KB = 220 as we need to map every possible virtual address.

So, we need 220 entries in the page table. Physical memory being 64 MB, a physical address must be 26 bits and a page (of size 4KB) address needs 26-12 = 14 address bits. So, each page table entry must be at least 14 bits.

So, total size of page table = 220 * 14 bits ~ 2 MB

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46. Quick sort uses ?

Explanation:

Here is no explanation for this answer

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47. In a sequential search, the time it takes to search through n elements is

Explanation:

Here is no explanation for this answer

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48. What is the sizeof(long int)

Explanation:

Here is no explanation for this answer

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49. The one that converts a high level language code to object form is

Explanation:

Here is no explanation for this answer

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50. Zener diode is a