True or False Questions

Q:

Breaking of relationships is allowed once referential integrity on a database is enforced

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

Breaking of relationships is prevented once referential integrity on a database is enforced

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Q:

Server control events are handled in the server whereas HTML control events are handled in the page

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Server control events can be handled inside a server itself

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Q:

Microwave communication uses high-frequency.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Microwaves are high-frequency signals in the 300 MHz to 300 GHz range. This is in contrast to radio signals, which are typically broadcast in all directions. Radio signals operate in the 3 Hz to 300 MHz range.


Microwave signals are used for both satellite and ground-based communications.

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Subject: Physics
Exam Prep: AIEEE , Bank Exams , GATE
Job Role: Analyst , Bank Clerk , Bank PO , IT Trainer

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Q:

A column defined as UNIQUE can contain Nulls while a column defined as PRIMARY KEY can't contain Nulls

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Because a table can have only one primary key

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1 3290
Q:

Application_End: This event occurs when there are no more users of the application.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

When there are no more users of the application Application_End event occurs

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Subject: .NET - Technology
Job Role: Software Architect

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Q:

In the following pieces of code, B and D will compile without any error. True or false ?

A: StringBuffer sb1 = "abcd";

B: Boolean b = new Boolean("abcd");

C: byte b = 255;

D: int x = 0x1234;

E: float fl = 1.2;

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

The code segments B and D will compile without any error. A is not a valid way to construct a StringBuffer, you need to create a StringBuffer object using "new". B is a valid construction of a Boolean (any string other than "true" or "false" to the Boolean constructor will result in a Boolean with a value of "false"). C will fail to compile because the valid range for a byte is -128 to +127 (i.e., 8 bits, signed). D is correct, 0x1234 is the hexadecimal representation in java. E fails to compile because the compiler interprets 1.2 as a double being assigned to a float (down-casting), which is not valid. You either need an explicit cast, as in "(float)1.2" or "1.2f", to indicate a float.

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Q:

Google Docs is a type of cloud computing.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

TRUE, Google Docs is a type of cloud computing.

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Q:

A Map is an Array,which contains the addresses of the free space in swap device that are allocatable resources,and the number of the resource unit available there.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

The given statement is clearly true.

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Subject: Operating Systems
Exam Prep: GRE

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