23 Questions
What is the main purpose of DNS?
To map domain names to IP addresses
What is the role of the Resolver in DNS?
Mapping names onto IP addresses
How are domains represented in the DNS name space?
In a tree structure
What does cybersquatting refer to?
Selling registered domains at inflated prices
Which part of the DNS name space represents domains with no sub-domains?
Leaf domains
Why is it important for an application program to use DNS for domain name resolution?
To convert human-readable domain names into IP addresses
What is a disadvantage of using HTTP for communication and data transfer?
High power requirement
Why is HTTP considered less secure compared to HTTPS?
It does not use encryption methods like HTTPS
What is a characteristic of HTTP pipe-lining?
Reduces latency by not requiring handshaking for subsequent requests
Why does the client not close the connection until it receives complete data from the server in HTTP?
To ensure data completeness before closing the connection
How does HTTP differ from HTTPS in terms of data security?
HTTP uses encryption like TLS
What is the purpose of a URL in identifying web pages?
To uniquely identify each web page globally
Which part of a URL uniquely indicates the specific web page?
The file name
What does HTTP stand for in the context of web communication?
HyperText Transfer Protocol
Why is a DNS name important in identifying web pages?
To uniquely identify the location of the page on the internet
What role does a protocol play in a URL scheme?
Specifying how data should be transferred between systems
Which part of a URL indicates the scheme for accessing the web page?
The protocol
What is the term used to describe the query method where if a local server cannot satisfy a request, it forwards the query to the next server?
Recursive Query
Which subsystem of e-mail systems allows people to read and send e-mails?
User Agents
What function of e-mail systems involves moving messages from the originator to the recipient?
Transfer
Which function of e-mail systems is related to informing the originator about what happened to the message?
Reporting
In the context of e-mail systems, what does 'Composition' refer to?
Creating messages and answers
What basic function of e-mail systems involves displaying incoming messages for users to read their email?
Displaying
Learn about the basics of DNS (Domain Name System) and how it translates domain names into IP addresses for smooth internet communication. Understand the importance of DNS in making the internet more user-friendly.
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