Answer:
"Option b and Option d" is the correct option for this question.
Explanation:
In the database, datatype belongs to the information storage medium, which can hold a specific type of value. There are several data types, which is used in database like integer, character, series, floating-point and array numbers, and the rules, that give levels of security to information are known as a security constraints. It may be either developed as rules on integrity, mathematical formalism rules or schematic rules, and other choices were wrong which can be described as follows:
- In option a, The asserts, which is in any exchange in a database, should only modify the information, that is effected in acceptable ways is called consistency, that's why it is wrong.
- In option c, The validity and accuracy of the data in the database can not be ensured, that's why it is wrong.
Computer Viruses:
Morris Worm
Nimda
ILOVEYOU
SQL Slammer
Stuxnet
CryptoLocker
Conficker
Tinba
Welchia
Shlayer
Anti-viruses:
Esafe
Avast
Avira AntiVirus
e Trust Antivirus
Dr Web by
NOD32
F-Secure Antivirus
AVG Anti-virus
.Kaspersky Antivirus
McAfee Antivirus
eScan
PC-Cillin
Symantec Antivirus
Answer:
File manager
Explanation:
From the list of options 1 to 4, only option (2) is correct
Explaining the options one after the other
- Web browser: It lets users access the internet
- File Manager: Used to create and manage files/folders
- User Interface: Means which the user of a computer interacts with the computer
- File Reader: Used to read the content of a file. e.g. Adobe reader for pdf files, Notepad for text files, etc.
Having explained the options one after the other, <em>the file manager </em>is the answer to this question.
<span>B. Efficiency
(</span><span>effective training </span><span>techniques)</span>
Bob Kahn and Vint Cerf were both pioneers of the Internet, and Tim Berners-Lee was known for inventing the WWW.
