Technology Questions

Q:

What is the purpose of cluster analysis in Data Warehousing?

Answer

Cluster analysis is used to define the object without giving the class label. It analyzes all the data that is present in the data warehouse and compare the cluster with the cluster that is already running. It performs the task of assigning some set of objects into the groups are also known as clusters. It is used to perform the data mining job using the technique like statistical data analysis. It includes all the information and knowledge around many fields like machine learning, pattern recognition, image analysis and bio-informatics. Cluster analysis performs the iterative process of knowledge discovery and includes trials and failures. It is used with the pre-processing and other parameters as a result to achieve the properties that are desired to be used.

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Q:

How do you generate Sequence number in Datastage?

Answer

Sequence numbers can be generated in Datastage using certain routines. They are


-KeyMgtGetNextVal


-KeyMgtGetNextValConn

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6 10120
Q:

What is the difference between Listview and Treeview?

Answer

Tree view control is designed to display data that is hierarchical in nature, such as organization trees, the entries in an index, the files, directories on a disk. It is often used in conjuction with the List view control, which is used to display the contents of the folder selected in the tree view.


List view control displays data as listitem objects. The control excels at representing subsets of data or discrete objects.The list view property is often used in association with a tree view control.

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18 10023
Q:

What is PHP's configuration file called?

Answer

PHP’s configuration file is called php.ini.

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Subject: PHP

13 9973
Q:

What’s the difference between md5( ), crc32( ) and sha1( ) crypto on PHP?

Answer The major difference is the length of the hash generated. CRC32 is, evidently, 32 bits, while sha1() returns a 128 bit value, and md5() returns a 160 bit value. This is important when avoiding collisions.
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Subject: PHP

13 9853
Q:

Spyware can result in all of the following except

A) Control over a device B) Tracking users
C) Gathering personal information D) Save duplicate files
 
Answer & Explanation Answer: D) Save duplicate files

Explanation:

Spyware is software that aims to gather information about a person or organization without their knowledge, that may send such information to another entity without the consumer's consent, or that asserts control over a device without the consumer's knowledge

 

Spyware is mostly used for the purposes of tracking and storing Internet users' movements on the Web and serving up pop-up ads to Internet users. Whenever spyware is used for malicious purposes, its presence is typically hidden from the user and can be difficult to detect. Some spyware, such as keyloggers, may be installed by the owner of a shared, corporate, or public computer intentionally in order to monitor users.

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Filed Under: Application Development
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

3 9463
Q:

Which of the following is added to prefs.js,when open a dialog box each time an error occurs?

A) user_pref("javascript.classic.error_alerts", true); B) user_pref("javascript.classic.error_alerts ", false);
C) user_pref("javascript.console.open_on_error ", false); D) user_pref("javascript.console.open_on_error ", true);
 
Answer & Explanation Answer: A) user_pref("javascript.classic.error_alerts", true);

Explanation:
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Filed Under: Web Technology

0 9399
Q:

What is the difference between ADODC and ADODB?

Answer

- When u build connection with database through coding, then its ADODB.When u build connection with database through ADO component, then its ADODC.


- ADODB is a ActiveXdll and ADODC is a ActiveXcontrol.


- No Need to bind with controls in ADODB whereas in ADODC we should bind with controls.

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