The correct ANSWER is (c) JavaScript

For explanation I would say: There are some existing techniques for the communication between client and server known as DUPLEX techniques. They are Streaming, HTML5, POSTBACK and AJAX, Long Polling, Polling. For real-time transferring of data, Streaming is the BEST option. Polling performs periodic requests.

Right option is (a) size

The BEST explanation: size attribute DENOTES the width of text input i.e measured by the number of characters INPUTTED. E.g. If we input value 3 then it will create a box of width enough to display three characters. The user can enter more characters if they want. Syntax is

The correct choice is (d) Opera

For explanation I would say: MP3 audio format is SUPPORTED by FIREFOX, Firefox for android as well as for iOs, Internet Explorer, Safari, and Chrome. The MIME TYPE for audio is audio/mpeg, .mp3. USUALLY used with

The correct option is (d) Firefox

To elaborate: mozCurrentSampleOffset ATTRIBUTE is not SUPPORTED by Chrome, Edge, Internet Explorer, Opera or Safari. It is only supported by Firefox. This is an offset which specifies the number of samples from the beginning of audio to the place where audio is CURRENTLY PLAYING.

The correct OPTION is (b) OGG THEORA Vorbis

To elaborate: Ogg format is supported in mobile, desktop, CHROME, safari, opera. WebM is preferable over Ogg Theora Vorbis due to the better ratio of compression and quality and most of the browsers support WebM. Ogg format can be used to support old browsers. The MIME type of Ogg file that has audio is audio/ogg.

The CORRECT answer is (b)

_{The explanation: The element is used to contain characters that should be SUBSCRIPT. It is commonly used with foot notes or chemical formulas. E.g. H20, ^{is use for SUPERSCRIPT,
is for HORIZONTAL BREAK,}}

is for unordered list.

The CORRECT option is (b)

Right option is (b) Java

To ELABORATE: CSSMin is written in Java. It preforms CONVERSION of lowercase, ordering of PROPERTIES, replacement of names with numeric or hex equivalents. E.g. font-weight:BOLD can be written as font-weight: 600, color: black to color: #000.

Correct choice is (d) event.clear

For EXPLANATION I WOULD say: There are many storgeEvent interfaces like event.key, event.newValue, event.url, event.oldValue, event.storageArea. Event.key RETURNS the key if the storage ITEM is changed, event.oldValue and event.newValue returns old VALUE and the new value of the key whose value has been changed. Event.url returns the URL of a document which has been changed.

Correct option is (d) is DELETED after the browser has been closed

To EXPLAIN: sessionStorage object works same as localStorage object EXCEPT the data is stored for one session only. When the USE closes the browser the data is deleted. SYNTAX is

Correct option is (a) multiple

The best I can explain: element is USED for DROP down select box. Size attribute is used for showing more than one option. For a selection of multiple OPTIONS, we use multiple attributes. It is a useful option to select multiple things at a TIME.

 Syntax is

Right OPTION is (a) FILE

Explanation: file input type defines a file-SELECT field, also gives a “Browse” button for file UPLOADS. Syntax is . Checkbox gives the facility to select one or more than one options from the given choices. The button activates JavaScript code. The TEXT defines a single-line text field.

The correct choice is (c) Send

The EXPLANATION: There are four WebSocket API, Close, Message, Error and OPEN. We can implement these events by using functions like ONMESSAGE, onopen, ONERROR, addEventListener and onclose. When there is an end of communication between client and server then onclose method is called.

Correct answer is (C) JavaScript

Easy EXPLANATION: Form validation is checking if the form has been filled CORRECTLY. Traditionally it has been performed by JavaScript but now HTML5 is introducing validation. HENCE browser does all the work of validation. Validation reduces the amount of work for the server.

Correct option is (d) min

The BEST I can explain: password is the attribute that creates a TEXT box which is similar to the single line text input, but the characters are blocked out. They are hidden due to the privacy of the user. The NAME attribute with a password set the name of the password input, size and maxlength attributes define the size and maximum length of the text box which is to be USED for the password.

Right choice is (b) MONTH and year

Best explanation: month and year are defined by month attribute. It does not DEFINE the time zone. The SYNTAX is Anniversary (month and year) ., DATE attribute DEFINES the date, datetime-local defines date and time but no time zone.

Right choice is (d) WIDTH

For explanation I would say:

Correct answer is (a) It INFLUENCES script loading

The EXPLANATION: Async is the new ATTRIBUTE of the

Correct ANSWER is (b) INTERNET Explorer

Easiest explanation: FIREFOX, CHROME and Opera are the very good browser in terms of developer support. They have various built-in TOOLS for the interaction of client-side and resources. It is also very helpful for security purposes.

Right choice is (a) JAVASCRIPT

The explanation: Among the four languages JavaScript, PHP, HTML and CSS, JavaScript has the most potential for MINIFICATION. In JavaScript whitespaces and comments are REMOVED. Windows-style line breaks (CRLF) is converted to UNIX-style breaks (LF). Moreover, VARIABLE names can ALSO be shortened.

The CORRECT CHOICE is (c) The color picker is defined by it

The explanation: color is the attribute of element introduce by HTML5. It DEFINES the color picker i.e we can SELECT a color of our choice from the color picker. SYNTAX is Select the color that you want:

The correct CHOICE is (c) nav

Easy explanation: The nav element REPRESENTS a section of a page that links to other PAGES or to parts WITHIN the page: a section with navigation links.

Correct choice is (b) mark

The explanation is: Highlight element is used to highlight a particular text when used in a document. STRONG element specifies the importance of text. The mark element represents a run of text in one document marked or HIGHLIGHTED for reference purposes, DUE to its relevance in another context. An ENCLOSED text which FLASHES later on is created by blink element.

Right option is (a) YUI

Explanation: YUI compressor gives maximum GZIPPED compression i.e. 21 out of 122. JSMin gives 23 out of 122, Closure(SIMPLE) gives 21 out of 122, Closure(advanced) gives 18 out of 122, PACKER gives 23 out of 122. There is also REDUNDANCY DUE to GZIP compression.

The correct option is (d) SELECTED

For explanation: When we want to pick ONE option from the given many OPTIONS we use radio TYPE. NAME attribute sent the value of the option selected to the server. Value attribute indicates the value that has been sent to the server for the selected option. The checked attribute indicates that which value should be selected on the loading of the page.

Correct OPTION is (b) Set an image as SUBMIT button

To explain: the image input type set an image as submit button. The syntax is this sets the image provided by url as the submit button. Input type image sends the X and Y COORDINATES of click and HENCE the image is activated by CLICKING the submit button.

Correct choice is (b) SVG

Explanation: Scalable Vector Graphics (SVG) is an XML-based vector IMAGE FORMAT for two-dimensional graphics with SUPPORT for INTERACTIVITY and animation. The SVG specification is an open standard developed by the World Wide Web Consortium (W3C) since 1999. SVG images and their behaviors are defined in XML text files.

is USED for main headings,

is used for SUBHEADINGS. There is no other levels other than

,

,

,

,

,

Correct ANSWER is (a) INDETERMINATE

Easy explanation: The indeterminate is ACTUALLY not an attribute, it is the PROPERTY of checkbox which can be change via JAVASCRIPT, e.g. Var checkbox=document.getElementById(“any-checkbox”); Checkbox.indeterminate=true;

The correct option is (b) storage.length

Explanation: storage.length returns number of value PAIRS that are CURRENTLY present in the LIST, storage.key(n) returns name of NTH key from the list, storagesetItem(key,value) sets the value which is identified by key to value, storage.clear() empties the list which is associated with VALUES.

Correct answer is (a) RFC6455

For explanation: Wire protocol is HANDSHAKING and DATA TRANSFERRING between server and client. It is the RFC6455. Chrome for ANDROID and Chrome are compatible with RFC6455. It includes binary messaging also. Firefox version 11 and Internet Explorer 10 is also compatible with this.

Correct choice is (d) looping

To explain I would say: Controls attribute of

Correct answer is (b) False

To explain I would say: SVG STANDS for Scalable VECTOR GRAPHICS.

Correct OPTION is (b) track

To elaborate: The track element ENABLES SUPPLEMENTARY MEDIA TRACKS such as subtitle tracks and caption tracks to be specified for audio and video elements.

Right ANSWER is (B) command

For explanation: The command TAG is NEW in HTML5 and specifies a normal command with an action. Details has END tag.

The correct choice is (b) tel

For explanation: The input element with a type attribute WHOSE VALUE is “tel” REPRESENTS a one-line plain-text edit control for ENTERING a TELEPHONE number.

The correct option is (b) TAG name

The explanation: The ATTRIBUTE name DESCRIBES name of element. The tagName property returns the tag name of the element. In HTML, the returned VALUE of the tagName property is always in UPPERCASE. Name of CLASS is returned by class name.

The correct option is (c) Title

For explanation: Contenteditable, contextmenu, data, draggable, hidden, role, ARIA, spellcheck all are new global attributes INTRODUCED in HTML5. Class, dir, id, lang, STYLE, TABINDEX, title are the attributes of HTML4 and now specified as global in HTML5.

The correct choice is (a)

Easy explanation: <SRC> provides or states location i.e URL of audio file. For INSERTING more than one audio file, USE instead of src attribute between . This can be important because many browser SUPPORT different formats for audio. For example MP3 is supported by Chrome6+, Safari 5+.

The correct choice is (d) that describes paragraphs

Easiest explanation: < Semantic MARKUP> which provides EXTRA information, such as where emphasis is placed in a sentence, that something you have written is a quotation, the MEANING of acronyms etc.

Correct choice is (d) privacy

Easiest explanation: There is only three web storage interface window, storage, and StorageEvent. Window OBJECT provides access to the LOCAL storage objects. Storage retrieves, set and REMOVE DATA from the domain. Storage event is fired when the storage area on a document’s window changes.

Right CHOICE is (B) none

Best explanation: We can’t STORE any character in localStorage in chrome 23.0, for chrome 18.0 it is unlimited i.e. can store any NUMBER of characters, for chrome 19.77 it is 1021 k, for chrome 22.0 it is 2.49 M, for chrome 24.0, 25.0, 27.0 it is 2.49 M, for chrome 28.0, 30.0, 31.0 and 31.1 it is 4.98 M.

The correct answer is (a) .OGV

Easiest explanation: For accessing audios in different browsers we can use various extensions like .aac, .mp1, .mp1, .m4a, .mp2, .mpg, .mp3, .mpeg, .oga, .ogg, .WAV, .webm. For video we have file extensions like .mp4, .ogv, .m4v, .webm. It is noticeable that some extensions are COMMON both in audio and video. So user should pay attention where to PUT these as PER the need.