C Programming Test (Random Questions)

If a is an array of 5 integers then which of the following is the correct way to increase its size to 10 elements?

Which of the following allows dirty reads, nonrepeatable reads and phantom reads to occur?

Which of the following is an abstract data type?

In an inheritance chain which of the following members of base class are accessible to the derived class members?

1 static

2 protected

3 private

4 shared

5 public

An ODBC data structure that identifies a database and the DBMS that processes it is called a(n):

A subquery in an SQL SELECT statement is enclosed in:

Which column contains all details of the permissions of a file when you issue the ls -l command?

JDBC stands for:

class X implements Runnable
{
public static void main(String args[])
{
/* Missing code? */
}
public void run() {}
}

Which of the following line of code is suitable to start a thread ?

Which one of the following symbols is not used in an ERD?

For the code snippet given below, which of the following statements are valid?

public class MyContainer<T> where T: class, IComparable
{
//Insert code here
}

1 Class MyContainer requires that it's type argument must implement IComparable interface.

2 Compiler will report an error for this block of code.

3 There are multiple constraints on type argument to MyContainer class.

4 Class MyContainer requires that its type argument must be a reference type and it must implement IComparable interface.

You need to subnet a network that has 5 subnets, each with at least 16 hosts. Which classful subnet mask would you use?

A bus is a group of _____ carrying digital signals.

Two connected routers are configured with RIP routing. What will be the result when a router receives a routing update that contains a higher-cost path to a network already in its routing table?

Which router command allows you to view the entire contents of all access lists?

Which of the following data constraints would be used to specify that the value of a cell in one column must be less than the value of a cell in another column in the same row of the same table?

The SQL -92 wildcards are ____ and ____ .

Which of the following are necessary for Run-time Polymorphism?

1 The overridden base method must be virtual, abstract or override.

2 Both the override method and the virtual method must have the same access level modifier.

3 An override declaration can change the accessibility of the virtual method.

4 An abstract inherited property cannot be overridden in a derived class.

5 An abstract method is implicitly a virtual method.

An oval represents which of the following in an ERD?

In an intrinsic semiconductor, the number of free electrons