Perl Interview Questions and Answers in 2019
Perl (Practical Extraction and Reporting Language) has been evolving as one of the most prevailing scripting languages. If you are one of the aspirants, preparing to have ultimate career opportunity then you are in the right place.
In this blog, I have listed some essential Perl Interview Questions which will assist you to prepare for the interview.
What do you mean by subroutines in Perl?
Subroutines are a block of code which consent an argument, executes the mandatory operations and then further return the value.
What is the role of the “use” function in PERL?
Use function has been implemented to load the module during compilation time.
What is the importance of the “require” function in PERL?
This function has been implemented to load the particular module during execution time.
What do you mean by Perl one-liner?
Perl one-line is a program of one line command which is implemented for performing certain operations. The major benefit of this command is that it is executed instantly.
Which argument holds the significance of debugging in PERL?
“-d” argument holds the significance
Which argument permits switching on taint mode in PERL?
“-T” argument permits switching
Name the extension of the “Goto label” of PERL?
“Goto expr”
Give at least one disadvantage of Perl language?
The execution speed of the PERL language is less because of its interpreted feature. Moreover, this language doesn’t permit complex coding.
Which function can be used to receive epoch time in PERL?
time() function
Can PERL language is compatible with Unicode?
Yes
Name the data types that are associated with the PERL language?
- Scalar data type
- Hashes of scalars
- Arrays of scalar
Also Read: Learn Python Online
Knowing The Fundamentals Of HTML And Its Tags
In this Course, we will go through general HTML concepts and all mandatory topics for the beginner through which they can learn HTML online, run a simple to advanced level programs and become expertise on it.
We will cover step by step topics to guide you entire topics of HTML. Stay tuned with every updated topics.
Lets Start with
HTML Basics
HTML (Hyper Text Markup Language) is not a programming language. It is a standard Markup Language used to create HTML Web Pages. As it comprises of a markup language and a hypertext. The function of a markup language is to define structure whereas a Hyperlink is to define website link. Every HTML pages contains elements which are represented by tags. The HTML document is written in the plain text file or editor which is saved with .htm or .html extension.
The HTML file consists of small markup tags, it starts with a start tag and close with an end tag. The whole content of html file enclosed with the start and end tag. You can see the below example, it is a simple HTML document to print the text in a web page.
If you want to prepare for web designer Interview then you can read more HTML Interview Questions here.
Html also consist of several tags like:-
<abbr> tag
<acronym> tag
<address> tag
<area> tag
Knowing About the Comments in PHP
As we all know that comment is considered as a line that cannot be executed in a program. Rather comments are those which are used for writing the descriptions according to one’s ease. Mainly PHP comments are used to describe any code line to make it understandable to the developer. Not only this but, this can also be used to hide any line of code.
Moreover, if you are a novice, and you are not clear about the basics of PHP language, there are several tutorials available on the internet from where you can Learn PHP Online. These tutorials will help you to understand the coding of this language and you will also get an insight into PHP comments.
Moving further, there are two types of comments
Single line comments in PHP are the type of comments that are responsible for fewer explanations. Single line comments are started with backlash (//) or #.
Multi-line comments in PHP are the type of comments that are responsible for comments in multiple lines. Using this comment in PHP, you can provide comments in a huge manner. In simple words, you can comment huge blocks of code. While commenting with multi-lines, you are supposed to add /* */ after writing the code.
Note: Browsers are not responsible for reading the comments.
Apart from these, the comments in PHP are likewise to the comments of PERL Style, C, and C++.
Besides this, a career in this field is also emerging and if you are looking for PHP Interview Questions, you can get it online. These interview questions will help you to know the answers and make yourself prepared for the frequently asked PHP interview questions by the industries.
HTML and CSS for Developing a Responsive Website
Although WordPress has emerged as the prior solution for modern bloggers to start the first blog without the need for any coding language, some people still prefer static HTML and CSS for designing their blog. The use of static HTML and CSS is recommended when someone wants more dominance over the functioning of the page.
Although WordPress themes are automatically responsive, while going for the static HTML and CSS, you need to keep in mind some points to make it platform responsive. This blog will guide you through the development of a responsive blog using HTML and CSS. If you are searching for something to guide you through your CSS Interview, you can visit CSS Interview Questions for the same.
Let’s Begin:
Responsive Blogs Using HTML and CSS
Step 1: Create your HTML File
The very first step which we will do is to create an HTML document for the blog which will include all the divisions and elements to be included on the blog. It may contain the code for images, videos, divisions, frames, etc.
Step 2: Add your Design with CSS
The next step which we will follow is to design the HTML elements which are included for the blog. It contains the color, animations, and other designs which will signify how the blog will appear to the visitors.
Step 3: Adding the Responsive Code
The final and most important step is to add the code for making the blog responsive. One can use the Bootstrap framework for making the blog responsive. Apart from this, the Viewport Meta tag can also be integrated into the code which demonstrates how the blog will be visible, using the different attributes of different devices.
Conclusion
In a Nutshell, responsive blogs can be effectively developed using HTML and CSS if someone wants to skip WordPress and go for personally maintained blogs. If you want to become a UI developer and have interviews lined up, you can also go through our list of HTML Interview Questions for the preparation.
Source Url: - https://www.linkedin.com/pulse/html-css-developing-responsive-website-coding-tag
Linux Open Source Pros and Cons
With the advancement of time and technology, the Linux operating system has been giving tough competition to the long-established Windows operating system. One of the major factors which make Windows different from Linux is that the codes of windows are confidential while anyone can initiate changes in Linux, making it free and open-source. If you are also preparing for a Linux development career, you can visit Linux Interview Questions.
However, there are various pros as well as cons associated with the Linux operating system being open source which will be evaluated in this article.
Pros
Two of the main advantages of Linux being open source is its usefulness and security. As the Linux operating system is open-source, users get a wide range of options to do the modifications into the code. Moreover, users also get a number of free distributions such as Fedora, Debian, Mint, Ubuntu, etc. for distributing the Linux code.
Another advantage that is associated with the Linux operating system is enhanced security. As the contribution is initiated by several whitehat hackers for the Linux code, the flaws can be easily identified in case of any program or software failure. This also implies that the error in Linux can be quickly caught and resolved as compared to Windows.
For More Read :
https://www.bloglovin.com/@coding/linux-open-source-pros-cons
Getting Started with JavaScript Backend Basics
JavaScript is included in the three major languages (HTML, CSS, and JavaScript) that a coder or programmer must learn. To start with, the browsers possess their own JavaScript Engine and it is responsible to support the JavaScript in order to make JavaScript work properly. Some of the JavaScript Engines that are used by most popular websites are Firefox: Spider Monkey, Safari: JavaScript Core, Chrome: V8, and Microsoft Edge/ Internet Explorer: Chakra.
JavaScript is a programming language that is not only limited to the web pages but it has extended and used by server programmers and desktops.
The backend is divided into three sections that are the application, database, and server. The backend developers are responsible for managing the back end of several applications as per the requirement. Backend developers are not just limited to learning the programming languages but they need to have knowledge about the server architecture.
Currently, website management has emerged as one of the most demanding career opportunities for which JavaScript stands as the major element. For getting employed in this field, you should go to JavaScript Interview Questions where you will get all the questions that are frequently asked in interviews.
Meaning of ECMA Script Standard
The ECMA Script Standard can be termed as a scripting language that is extensively used for trademarks. This scripting language has also been standardized and validated by the European Computer Manufacturers Association (ECMA). The major use of the ECMA script is to set a certain standard for the JavaScript language. This means, all the code written in JavaScript tends to follow the set standard to be supported on varied web browsers.
Definitions Kinds in JavaScript
There are several definitions types available in JavaScript such as
- Dynamic typing – this typing is dependent on several conditions.
- Primitive Data Types- these types don’t have any method attached to them.
Conclusion
To sum it all, JavaScript is an essential programming language along with HTML and CSS. So opting for a career as an HTML developer is an option worth. If you are looking for the easy way to crack the HTML Interview, you can refer to Top 50 HTML Interview Questions to know about the frequently asked questions to a coder.
Source url :- https://medium.com/@codingtag.com/getting-started-with-javascript-backend-basics-38cf3d107cc3
Common Issues Found While Coding With CSS
Cascading Style Sheets are used along with HTML documents to describe how elements have appeared. Entire styling related tasks such as colors, appearance, font’s size, background, alignment, and spacing, etc. CSS permits great presentation of a web project. CSS interview questions act as a prime role in web development recruitments. Beginners can get a great future after referring to insights of CSS. This language contains numerous benefits. Among them, one outstanding feature of CSS is its acceptance to allow uniform modifications across different webpages. In spite of various advantages, CSS contains challenges too. The main objective of this blog is to introduce a few challenges to CSS. This might be beneficial for developing customized websites.
Let’s begin.
- In CSS, There are chances of Cross-Browser challenges because it works differently in every browser. This implies that developers are required to verify compatibility while programming execution.
- The other challenge of CSS is that it does not permit logical operations.
- CSS does not authorize web-page request and also, one cannot able to read her/his files through it
- Through CSS, one can’t able to perform Database interaction.
- CSS is less secure because of its open text-based feature. Hackers or anyone having read/write authorization can easily perform modification in CSS file and disturb the website formatting due to the lack of built-in security parameters.
- The debugging and compilation process is complex in a CSS processor.
Conclusion
CSS is a rapidly growing language to create webpages. We have discussed some of the challenges regarding the same. I hope this blog will cover gaps in CSS. If you are a beginner and don’t have much knowledge about front-end languages, you should definitely refer to the documentation or online courses to learn HTML, CSS concepts and JavaScript to build attractive web templates in minutes.
Source Url- https://www.minds.com/codingtag1/blog/common-issues-found-while-coding-with-css-1013778875286851584
