What is the purpose of the 'Alt' attribute in an image tag for accessibility? MCQ with Answer and Explanation

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What is the purpose of the 'Alt' attribute in an image tag for accessibility?

A. To define image dimensions

B. To provide a textual description for screen readers

C. To display a tooltip

D. To style the image

Answer: Option B

Solution (By JKSSB Mock Tests)

Alt text is essential for accessibility, providing a description of the image for users who cannot see it.

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Question #1

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What does an 'Asymmetric Encryption' implementation use to secure web communications over HTTPS links?

A. A mathematically linked key pair consisting of a Public Key and a Private Key

B. A localized cookie token combined with basic user credentials

C. A series of mechanical network router configuration keys

D. A single shared secret password key for both operations

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Correct Answer: Option A

Explanation:
Asymmetric cryptography utilizes a public key (available to everyone for data encryption) and a private key (kept secret by the server for data decryption).

This question belongs to: Computer Internet and Web Technologies

Question #2

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Which of the following is an example of a static web page?

A. A page that updates automatically

B. A page that shows user-specific data

C. A page that displays the same content every time

D. A page with a login form

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Correct Answer: Option C

Explanation:
A static web page is delivered exactly as stored and does not change based on user interaction or server-side processing.

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Question #3

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Which specific protocol is built over internet stacks to manage the automated transmission of real-time text alert states inside Internet of Things (IoT) hardware over limited bandwidth links?

A. FTP heavy file transmission channels

B. POP3 email archive protocols

C. Standard HTTP/1.1 large payload rules

D. MQTT (Message Queuing Telemetry Transport)

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Correct Answer: Option D

Explanation:
MQTT is a lightweight publish-subscribe network protocol designed to transmit messages between constrained IoT devices over low-bandwidth or unreliable networks.

This question belongs to: Computer Internet and Web Technologies

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