The above DFA accepts the set of all strings over {0, 1} that
Option A. Begin either with 0 or 1
Option B. End with 0
Option C. End with 00
Option D. Contain the substring 00
True Answer C
Explanation :
Let A be the starting state
A to A input 1 0 output 0 0
B to A input 1 0 output 0 0
C to A input 1 0 output 0 0
So end with 0 0
Alternately
R.E. = (0 + 1) * 00
The above DFA accepts the set of all strings over {0, 1} that
The brain of any computer system is
Option A. Control Unit
Option B. Arithmetic Logic Unit
Option C. Central Processing Unit
Option D. Storage Unit
True Answer C
Explanation :
Control unit or arithmetic logical unit alone can not represent the function of brain to compare with neither does storage unit only. Central Processing Unit is the combination of control, arithmetic logic and memory units thus can be compared with brain that controls the body, processes its functions and remembers.
The brain of any computer system is
Consider the following relational schema:
Employee (empId, empName, empDept)
Customer (custId, CustName, salesRepId, rating)
SalesRepId is a foreign key referring to empId of the employee relation. Assume that each employee makes a sale to at least one customer. What does the following query return?
SELECT empName
FROM employee E
WHERE NOT EXISTS (SELECT custId
FROM customer C
WHERE C. salesRepId = E. empId
AND C. rating < > ‘GOOD’)
Option A. Names of all the employees with at least one of their customers having a ‘GOOD’ rating.
Option B. Names of all the employees with at most one of their customers having a ‘GOOD’ rating.
Option C. Names of all the employees with none of their customers having a ‘GOOD’ rating.
Option D. Names of all the employees with all their customers having a ‘GOOD’ rating.
True Answer D
Explanation :
The outer query will return the value (names of employees) for a tuple in relation E, only if inner query for that tuple will return no tuple (usage of NOT EXISTS).
The inner query will run for every tuple of outer query. It selects cust-id for an employee e, if rating of customer is NOT good. Such an employee should not be selected in the output of outer query.
So the query will return the names of all those employees whose all customers have GOOD rating.
Consider the following relational schema:
Employee (empId, empName, empDept)
Customer (custId, CustName, salesRepId, rating)
SalesRepId is a foreign key referring to empId of the employee relation. Assume that each employee makes a sale to at least one customer. What does the following query return?
SELECT empName
FROM employee E
WHERE NOT EXISTS (SELECT custId
FROM customer C
WHERE C. salesRepId = E. empId
AND C. rating < > ‘GOOD’)
Constitutional Government means
Option A. Government according to the terms of the constitution
Option B. Government, based on the rule of law
Option C. Democratic government
Option D. all of these
True Answer D
Explanation :
A constitution is a set of fundamental principles or established precedents according to which a state or other organization is governed. Constitution concerns different levels of organizations, from sovereign states to companies and unincorporated associations. With the aid of the Constitution, India is governed by a parliamentary system of government with the executive directly accountable to the legislature.
Hence, D is correct.
Constitutional Government means
Match the problem domains in GROUP I with the solution technologies in GROUP II.
GROUP I
(P) Service oriented computing
(Q) Heterogeneous communicating systems
(R) Information representation
(S) Process description
GROUP II
(1) Interoperability
(2) BPMN
(3) Publish-find-bind
(4) XML
Option A. P-1, Q-2, R-3, S-4
Option B. P-3, Q-4, R-2, S-1
Option C. P-3, Q-1, R-4, S-2
Option D. P-4, Q-3, R-2, S-1
True Answer C
Explanation :
Service Oriented Computing (SOC): Publish-Find-BIND
Heterogeneous Comm. System: Interpretability
Information Representation: XML
Match the problem domains in GROUP I with the solution technologies in GROUP II.
GROUP I
(P) Service oriented computing
(Q) Heterogeneous communicating systems
(R) Information representation
(S) Process description
GROUP II
(1) Interoperability
(2) BPMN
(3) Publish-find-bind
(4) XML