IT430 Midterm Short Questions

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Virtual University of Pakistan

IT-430

Short Questions Midterm

Q21. ( Marks: 2 )

What value will be printed after executing the following statement in JavaScript: document.write( Math.pow(3, 2) ); In this function math which is object describe the method of pow and 3, 2 are the arguments of object to method. So if we printed after executing the above statement in JavaScript than resulted value will be 9

OR

Math.pow(base, power) Math.pow( 3, 2 ); // returns 9 (3 * 3)

Q22. What is a web server?

Web server – machine that services internet request.

OR

Web server is a machine that serves up the web page requests of a client on the internet. It is a combination of hardware and software. Decision as regards the type of a web server is largely dependent on the volume and type of web activities. So, transaction processing sites generating dynamic pages with high traffic volumes would need web server software that is more efficient and can easily be upgraded.

Q1. How many types of outside attacks that are the security threat over internet? Write only names?

Following are outside attacks that are the security threat over internet:

1. Snooping
2. Man in the middle attacks
3. IP address spoofing
4. Passwords attacks

Q2. Write a short note on Circuit Level Firewall?

Circuit level firewall is set of rules to determine that the incoming packets are allowed or not to pass though any firewall. This type of firewall works on international organization for standards model. On higher levels of OSI model this firewall is more complicated.

Q3. Describe the importance of Cryptography in internet data transfer security in E- Commerce?

1. It provides the Transaction Integrity. Transaction detail of both the parties can be verified which help to built the confidence between business communities.
2. It provide Privacy like it provide controls to prevent third parties from getting access to the information within the transaction
3. Without cryptography, it is doubtful that banks, businesses and individuals would feel safe doing business online.
4. Cryptography provides the confidence to the customer that their data is safe and secure. Otherwise due to lack of confidence and doubt e-commerce business can not flourish.

Q26. ( Marks: 5 )

Write a list of comparison operators in JavaScript with symbols.

Comparison operators

‘==’ for Equal ‘!=’ for not equal ‘< ‘ for Less than ‘<=’ for less than equal ‘>’ for Greater than ‘>=’ for Greater than equal

5. Write HTML code for the form displaying a drop-down list containing the following entries: Honda, Suzuki, Santro, and Corolla.

< Html> < Head> <title> </title></Head> < Body> <tr> <td width="170" height="20" align="left"> Cars:</td> <td width="340" height="20" align="left"> <select size="1" name="D1"> <option selected > Select</option> <option > Honda </option> <option > Suzuki </option> <option > Santro </option> <option > Corolla </option> </select></td> </tr></Body></Html>

Q5. In the code given below, what does it mean by document and write?

<HTML> <HEAD> <TITLE>example-writing on the page</TITLE>