Amazon Placement Paper 2012.
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Amazon Placement Paper 2012
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When a function is recursively called, all automatic variables :
(A) are initialized during each execution of the function
(B) are retained from the last execution
(C) are maintained in a stack
(D) are ignored
Enumeration variables can be used in :
(A) search statement like an integer variable
(B) break statement
(C) preprocessor commands
(D) function statement
int arr[ ]={1, 2, 3, 4}
int count;
incr( ) {return ++count;}
main( )
{
arr[count++]=incr( );
printf(“arr[count]=%d\n”, arr[count]);
}
The value printed by the above program is :
(A) 1 (B) 2 (C) 3 (D) 4
The declaration “unsigned u” indicates :
(A) u is an unsigned character
(B) u is an unsigned integer
(C) u is a character
(D) u is a string
In DBMS, deferred update means :
(A) All the updates are done first but the entries are made in the log file later
(B) All the log files entries are made first but the actual updates are done later
(C) Every update is done first followed by a writing on the log file
(D) Changes in the views are deferred till a query asks for a view
Which statement is false regarding data independence ?
(A) Hierarchical data model suffers from data independence
(B) Network model suffers from data independence
(C) Relational model suffers only from logical data independence
(D) Relational model suffers only from physical data independence
Which of the following tools is not required during system analysis phase of system development life cycle ?
(A) Case tool (B) RAD tool
(C) Reverse engineering (D) None of these
Two phase protocol in a database management system is :
(A) a concurrency mechanism that is not deadlock free
(B) a recovery protocol used for restoring a database after a crash
(C) Any update to the system log done in 2-phases
(D) not effective in Databas
Which algorithm has same average, worst case and best case time ?
(A) Binary search (B) Maximum of n number
(C) Quick sort (D) Fibonacci search
Binary search tree is an example of :
(A) Divide and conquer technique
(B) Greedy algorithm
(C) Back tracking
(D) Dynamic Programming
Which one of the following is a physical data structure ?
(A) Array (B) Linked lists
(C) Stacks (D) Tables
How many DS1 signals are transported on a DS3 signal ?
(A) 24 (B) 672 (C) 14 (D) 28
A 10 BASE-2 network is limited to :
(A) 20 bytes per data field (B) 30 stations per segment
(C) 40 segments (D) 50 feet of cable
The LAPB frame structure and the frame structure of SDLC are :
(A) Opposite (B) Identical
(C) Reversed (D) Non-identical
Linking :
(A) cannot be performed before relocation
(B) cannot be performed after relocation
(C) can be performed both before and after relocation
(D) is not required if relocation is performed
Which of the following is the most general phase-structured grammar ?
(A) Regular (B) Context-sensitive
(C) Context free (D) Syntax tree
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