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Home » Technical » Aptitude Test - 9
Hassan
1.The 1’s complements requires?
A. One operation
B. Two operations
C. Three operations
D. One operation
2.Which one is used for logical manipulations?
A. 2’s complement
B. 9’s complement
C. 1’s complement
D. 2’s complement
3.For arithmetic operations only?
A. 1’s complement is used
B. 2’s complement
C. 10’s complement
D. 1’s complement is used
4.The addition of +19 and +43 results as in 2’s complement system?
A. 11001010
B. 101011010
C. 00101010
D. 11001010
5.Binary coded decimal is a combination of?
A. Two binary digits
B. Three binary digits
C. Four binary digits
D. Two binary digits
6.The decimal number 10 is represented in its BCD form as?
A. 10100000
B. 01010111
C. 00010000
D. 10100000
7.Add the two BCD numbers: 1001 + 0100 = ?
A. 10101111
B. 01010000
C. 00010011
D. 10101111
8.Carry out BCD subtraction for (68) – (61) using 10’s complement method?
A. 00000111
B. 01110000
C. 100000111
D. 00000111
9.Code is a symbolic representation of information?
A. Continuous
B. Discrete
C. Analog
D. Continuous
10.When numbers, letters or words are represented by a special group of symbols, this process is called?
A. Decoding
B. Encoding
C. Digitizing
D. Decoding
11.A three digit decimal number requires for representation in the conventional BCD format?
A. 3 bits
B. 6 bits
C. 12 bits
D. 3 bits
12.How many bits would be required to encode decimal numbers 0 to 9999 in straight binary codes?
A. 12
B. 14
C. 16
D. 12
13.The excess-3 code for 597 is given by?
A. 100011001010
B. 100010100111
C. 010110010111
D. 100011001010
14.The decimal equivalent of the excess-3 number 110010100011.01110101 is?
A. 970.42
B. 1253.75
C. 861.75
D. 970.42
15.A relational database consists of a collection of?
A. Tables
B. Fields
C. Records
D. Tables
16.A in a table represents a relationship among a set of values?
A. Column
B. Key
C. Row
D. Column
17.The term is used to refer to a row?
A. Attribute
B. Tuple
C. Field
D. Attribute
18.The term attribute refers to a which of a table?
A. Record
B. Column
C. Tuple
D. Record
19.For each attribute of a relation, there is a set of permitted values, called the which of that attribute?
A. Domain
B. Relation
C. Set
D. Domain
20.A domain is atomic if elements of the domain are considered to be which units?
A. Different
B. Indivisbile
C. Constant
D. Different
21.The tuples of the relations can be of what order?
A. Any
B. Same
C. Sorted
D. Any
22.Using which language can a user request information from a database?
A. Query
B. Relational
C. Structural
D. Query
23.In this query which attributes form the primary key?
A. Name
B. Dept
C. Tot_cred
D. Name
24.Which one of the following is a procedural language?
A. Domain relational calculus
B. Tuple relational calculus
C. Relational algebra
D. Domain relational calculus
25.The operation allows the combining of two relations by merging pairs of tuples, one from each relation, into a single tuple?
A. Select
B. Join
C. Union
D. Select
26.The result which operation contains all pairs of tuples from the two relations, regardless of whether their attribute values match?
A. Join
B. Cartesian product
C. Intersection
D. Join
27.The operation performs a set union of two “similarly structured” tables?
A. Union
B. Join
C. Product
D. Union
28.The most commonly used operation in relational algebra for projecting a set of tuple from a relation is?
A. Join
B. Projection
C. Select
D. Join
29.The operator takes the results of two queries and returns only rows that appear in both result sets?
A. Union
B. Intersect
C. Difference
D. Union
30.A is a pictorial depiction of the schema of a database that shows the relations in the database, their attributes, and primary keys and foreign keys?
A. Schema diagram
B. Relational algebra
C. Database diagram
D. Schema diagram
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