Interview Questions

Q:

What is a container class?

Answer

A class is said to be a container class which is utilized for the purpose of holding objects in memory or persistent media. A generic class plays a role of generic holder. A container class is a good blend of predefined behavior and an interface that is well known. The purpose of container class is to hide the topology for the purpose of objects list maintenance in memory. A container class is known as heterogeneous container, when it contains a set of different objects. A container class is known as homogeneous container when it contains a set of similar objects.

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Subject: C++

2 3954
Q:

Whar are the Difference between online and offline backups?

Answer

- Online backup is one which is taken at the time the database is running in the ARCHIVELOG mode.


- Following files should be backed up during the Offline Backup: All data file, all control file and all online redo log file. But in the case of the online backup following files is backed up: All data files all archived redo log files and one control file via the alter database command.


- Offline database we cannot rely upon but in case of online database no issues.


- Offline backup no archived mode is required but in the online backup it is must.

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Subject: Oracle

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Q:

Which SQL keyword is used to sort the result-set?

A) ORDER B) ORDER BY
C) SORT BY D) SORT
 
Answer & Explanation Answer: B) ORDER BY

Explanation:

SQL keyword ORDER BY is used to sort the result-set.

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Filed Under: SQL
Job Role: Analyst , Database Administration , IT Trainer

1 3944
Q:

What are type safe function pointers?

A) Delegates B) Break points
C) Both A and B D) None
 
Answer & Explanation Answer: A) Delegates

Explanation:

A delegate declares a ref type that references a named of anonymous method. Delegates are secure and type-safe.

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Filed Under: .NET

1 3940
Q:

What is 255.255.255.255 used for?

Answer

Research

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Q:

What is Log Shipping?

Answer

Log shipping is the process of automating the backup of database and transaction log files on a production SQL server, and then restoring them onto a standby server. Enterprise Editions only supports log shipping. In log shipping the transactional log file from one server is automatically updated into the backup database on the other server. If one server fails, the other server will have the same db and can be used this as the Disaster Recovery plan. The key feature of log shipping is that it will automatically backup transaction logs throughout the day and automatically restore them on the standby server at defined interval.

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Subject: SQL

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Q:

A check returned by the bank marked nsf means

A) Cheque has been forged B) Cheque can't be cashed being illegal
C) There are not sufficient funds in your accoun D) Bank can't verify your identity
 
Answer & Explanation Answer: C) There are not sufficient funds in your accoun

Explanation:

NSF means - Not Sufficient Funds.

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Filed Under: Bank Interview
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

0 3928
Q:

What is the scope resolution operator?

Answer

Scope resolution operator allows a program to reference an identifier in the global scope that is hidden by another identifier with the same name in the local scope.

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Subject: C++

1 3925