Technology Questions

Q:

What is DHCP scope?

Answer

A scope is a range, or pool, of IP addresses that can be leased to DHCP clients on a given subnet.

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Q:

What are new Media Elements in HTML5?

Answer

Following are the New Media Elements are present in HTML5:


<audio> tag: for playing audio.


<video> tag: for playing video.


<source> tag: For media resources for media elements.


<embed> tag: For embedded content


<track> tag: For text tracks used in media players

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Q:

How does Microsoft classify security threats to its software?

Answer

Microsoft classifies such threats into 4 indicators, which are low, moderate, important, and critical. Such indicators are available as reference under the Microsoft bulletin.

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Q:

What are the uses of synonyms?

Answer

- Mask the real name and owner of an object.
- Provide public access to an object
- Provide location transparency for tables, views or program units of a remote database.
- Simplify the SQL statements for database users.

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Subject: Oracle

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Q:

What is unwrapping?

Answer

Unwrapping is also called as unpacking or unboxing.


Getting the private data stored in the object by using methods is called unpacking or unwrapping.

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Subject: Java

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Q:

A table is classified as a parent table and you want to drop and re-create it. How would you do this without affecting the children tables?

Answer

Disable the foreign key constraint to the parent, drop the table, re-create the table, enable the foreign key constraint.

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Q:

Explain why workflows are based on Extensible Models.

Answer

Workflows serve the purpose of automating business processes. Now, since each type of business has a wide range of problems; therefore, a workflow platform needs to be extensible. WF provides you with a set of base activities, such as IfElse, Code, and Delay, to build a workflow. You can extend these activities or build new activities to meet your requirements. Besides activities, you can also extend services, such as tracking, management, and persistence, provided by the runtime engine.

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Subject: .NET

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Q:

What is a synonym? What are its various types?

Answer

A synonym can be called as an alias for a table, view, sequence or program unit. It is basically of two types:
- Private - Only the owner can access it.
- Public - Can be accessed by any database user.

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Subject: Oracle

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