The Internet Database Environment Questions and Answers

Answer: B

Correct answer: add functionality to the browser.

A client-side extension - a plug-in, an applet, a script engine - runs in the browser and extends what the browser can do with what it receives. Server-side extensions do the corresponding job at the other end, generating content the browser could not have produced for itself.

Answer: B

Correct answer: False

Distributing requests to one IP address among several servers at the routing level is network or hardware load balancing. DNS balancing works differently: the name server returns a different address for each lookup, so the client is directed to a different server before any connection is made.

Answer: D

Correct answer: It allows for coding of custom tags in an HTML file.

ColdFusion Markup Language embeds its own tags in an HTML file, and the ColdFusion server interprets them and substitutes the result before the page is sent. The files carry the .cfm extension and are executed on the server - which is what makes the other three options wrong.

Answer: A

Correct answer: A scripting language that states the rules for tagging elements.

XML is a scripting or markup language rather than a programming language: it describes structure and has no control flow of its own. Note the distinction from the fourth option - XML states the rules for tagging, and it is the schema or document type definition written in it that creates a particular set of tags.

Answer: A

Correct answer: True

A scanner examining encrypted traffic sees only ciphertext and can detect nothing within it, so the inspection has to happen after decryption - at the endpoint, or at a device that terminates the encryption. Encryption therefore protects the message from interception and hides its contents from the defender at the same time.

Answer: B

Correct answer: False

Java was designed to be simpler than C++, and deliberately omits the features that make C++ hardest to use safely - explicit pointer arithmetic, manual memory management, multiple inheritance of implementation. Both are object-oriented, so the first half of the statement is right and the comparison is the wrong way round.

Answer: A

Correct answer: unauthorized access is restricted.

The wording matters. Access must be restricted, which is achievable; making unauthorised access impossible is not, and claiming it would be a false assurance. Configuration is one layer among several, alongside patching, monitoring and the firewall.

Answer: A

Correct answer: To provide security against unauthorized users

A proxy sits between the internal network and the outside, so every request passes through it and can be examined, filtered or refused. It hides the internal addresses and gives one place at which policy is applied - caching and performance are useful side effects rather than the purpose.

Answer: A

Correct answer: True

Both work the same way: tags of their own are written into an HTML file, the server interprets them and replaces them with the result, and the browser receives ordinary HTML. The languages and file extensions differ - .asp against .cfm - but the mechanism is the same.

Answer: B

Correct answer: False

Plain HTTP sends everything in clear text, so anything between the browser and the server can read or alter it. Security is added by running HTTP over TLS, which is what HTTPS is - a separate arrangement rather than a property of HTTP itself.