Electronic commerce questions.

A server computer that is used to convert domain name such as www.suanet.ac.tz to a corresponding IP address is called

1. DHCP Server
2. FTP
3. DNS
4. URL

HTTP is protocol that is found in the following layer of TCP/IP architecture

1. Application layer
2. Host-to-Host Transport Layer
3. Internet Layer
4. Nework Interface Layer

Which of the following graphics formats are suitable for websites

1. PNG
2. JPGE
3. GIF
4. TIFF

The foillowing statement is not true about the types and examples of tags in a web document.

1. Documents tags specify parts of the document such as <title>and <p>
2. Text structure tags determine layout of the text in the body of the web document such as <h1> and <br>
3. Style tags specify how text will be shown by browser such as <center> and <em>
4. Anchor tag to link one web documents such as <a>

The main HTML tag that interact with search engines is called

1. Meta tag
2. XML tag
3. Img tag
4. Search tag

Which of the following is true about IP address

1. It consists of a series of 4 separate numbers delineated by a period where each range from 0 to 256
2. It consists of a series of  4 separate numbers delineated by a period where each range from 0 to 255
3. It consists of a series of 4 separate numbers delineated by a period where each range from 1 to 256
4. It consists of a series of 4 separate  numbers delineated by a period where each range from 1 to 255

What is true about the model of networking in relation to electronic commerce

1. In packet switching network, router is used to determine the best route that a packet can follow
2. In circuit switching network, router is used to determine the best route that a packet can follow
3. In packet switching network, a single path must be established before send a packet
4. In packet switching network, communication works well for sending data across a large network.

Data security in e-commerce systems is critical to ensure that sensitive information of customers such as credit card numbers and money transfer are well protected. Mention the three important security areas of an e-commerce system. In each security area explain one security threat and two security countermeasures.

The internet and e-commerce, and many other technologies help business to increase profits. Inspite of the market fluctuations of internet stocks, it is difficult to ignore the depht and breadth of the impact of e-commerce in daily life of a “new” or “networked” economy. Discuss.

1. With vivid examples, explain the meaning of this assertion, “unlike debit card, cash is a legal tender”
2. Briefly analyse properties of digital cash