Suggested Certification for Perl

CIW Perl Specialist, Oracle Perl Programming

Recommended Book 1 for Perl

★★★★☆
Check Amazon for current price
View Deal
On Amazon

Recommended Book 2 for Perl

★★★★☆
Check Amazon for current price
View Deal
On Amazon

Recommended Book 3 for Perl

★★★★☆
Check Amazon for current price
View Deal
On Amazon

Recommended Book 4 for Perl

★★★★☆
Check Amazon for current price
View Deal
On Amazon

Recommended Book 5 for Perl

★★★★☆
Check Amazon for current price
View Deal
On Amazon

Note: *Check out these useful books! As an Amazon Associate I earn from qualifying purchases.

Interview Questions and Answers

You can use cpan or cpanm (CPAN Minus) to install Perl modules.

BEGIN executes code at compile time, while END executes code at script termination.

Perl handles exceptions using eval {} blocks and checking $@ for errors.

use strict enforces variable declaration rules, while use warnings provides helpful runtime warnings.

die terminates the program and prints an error message, whereas warn prints a message but continues execution.

Perl supports OOP with packages, bless(), and modules to create classes and objects.

A module is a reusable package of Perl code stored in a .pm file.

chomp removes the newline character from a string, while chop removes the last character regardless of what it is.

You can use the system() function or backticks (`command`) to execute system commands.

A subroutine is a reusable block of code defined using the sub keyword.

You can read a file using open(), followed by a while loop to read line-by-line.

You use open() with the > mode, followed by print() to write data.

Variables in Perl are declared using $, @, or % depending on their type (scalar, array, or hash).

my declares a variable with lexical scope, our declares a global variable, and local temporarily modifies a global variable within a block.

Scalars store single values, arrays store ordered lists, and hashes store key-value pairs.

Perl has built-in regex support using the m//, s///, and tr/// operators for pattern matching and text substitution.

Perl is a high-level, general-purpose programming language known for text processing and system administration tasks.

Perl supports regular expressions, dynamic typing, automatic memory management, and cross-platform compatibility.

CPAN (Comprehensive Perl Archive Network) is a repository of Perl modules and libraries.

Perl is a family of two high-level, general-purpose, interpreted, dynamic programming languages.

Object-oriented, procedural and functional.

- Easily extendible.

- Text manipulation.

- Unicode support.

- Database integration.

- C/C++ library interface.

- Embeddable.

We can use any new string or string variable with the chomp function in perl.

Yes, such as While loops, for loops etc.

Require- This function then it demands that the script requires the specified version of Perl.

Use - use implicitly calls the import method of the module being loaded at compile time.

Perl Grep- The grep() function in Pe

Explain Goto label, Goto name, and Goto expr

Scalars, arrays of scalars and hashes (also known as associative arrays, dictionaries or maps).

Perl belongs to a class of programs known as interpreters. This means that when your perl script runs, perl itself must read your commands and carry them out. Perl has always had a compiler, source is compiled into an internal form (a parse tree) which is

System Analysis is a method in which facts are gathered and interpreted, problems are defined and a system is decomposed into it's components. Design emphasizes a conceptual solution that fulfills the requirements, rather than it's implementation. Systems

The data structure is a data collection, management and storage system that allows for easy access and alteration. More specifically, the data structure is the set of data values, the relationship between them and the functions or operations that can be a

In a linear data structure, the data elements are organized in a linear order where every element is connected to it's previous and next adjacent elements. For a non-linear data structure, the data elements are hierarchically connected.

NA

The most fundamental types of algorithm are: Recursive Algorithms, Dynamic programming algorithm, Backtracking algorithm, Divide and Conquer Algorithm, Greedy Algorithm, Brute Force Algorithm.

Recursion is a method used to allow a function call it'self. This technique offers a way to break down complicated problems into simple problems that are easier to solve.

NA

NA

NA

NA

Explain specific instances with respect to the job JD.

Model–view–controller(MVC) is a software design pattern used for developing user interfaces that separate the related program logic into three interconnected elements. Each of these components is built to handle specific development aspects of an applicat

Explain specific instances with respect to the job JD.

(1) Choose the Right Technology when picking up a programming language, Database, Communication Channel.

(2) The ability to run multiple servers and databases as a distributed application over multiple time zones.

(3)Database backup, correcti

Object-oriented programming is a programming paradigm based on the concept of \"objects\", which can contain data, in the form of fields, and code, in the form of procedures. A feature of objects is that objects' own procedures can access and often modify

Most modern development processes can be described as agile. Other methodologies include waterfall, prototyping, iterative and incremental development, spiral development, rapid application development, and extreme programming.

Software Development Life Cycle (SDLC) is a process used to design, develop and test high-quality software. Also referred to as the application development life-cycle.

Software testing is called the process or method of identifying errors in an application or system, such that the application works according to the requirement of end-users. It is an examination carried out to provide users the information on the quality

The primary aim of the code review is to ensure that the codebase overall product quality is maintained over time. It helps give a fresh set of eyes to identify bugs and simple coding errors. All of the tools and processes of code review are designed to t

The most common software sizing methodology has been counting the lines of code written in the application source. Another approach is to do Functional Size Measurement, to express the functionality size as a number by performing Function point analysis.

The major parts to project estimation are effort estimation, cost estimation, resource estimate. In estimation, there are many methods used as best practices in project management such as-Analogous estimation, Parametric estimation, Delphi process, 3 Poin

Basecamp, Teamwork Projects, ProofHub, Zoho Projects, Nifty, Trello, JIRA, Asana, Podio, etc.

NA

Functional requirements are the specifications explicitly requested by the end-user as essential facilities the system should provide. Non-functional requirements are the quality constraints that the system must satisfy according to the project contract,

Pseudocode is an informal high-level explanation of the operating principle of a computer program. It uses the structural conventions of a normal programming language but is intended for human reading rather than machine reading.

Validation is the process of checking whether the specification captures the user's needs, while verification is the process of checking that the software meets the specification.

Different Types Of Software Testing - Unit Testing, Integration Testing, System Testing, Sanity Testing, Smoke Testing, Interface Testing, Regression Testing, Beta/Acceptance Testing.

Quality control can be described as part of quality management that is focused on fulfilling quality requirements. While quality assurance relates to how a process is performed or how a product is made.

Single Responsibility Principle (SRP), Open/Closed Principle (OCP), Liskov Substitution Principle (LSP), Interface Segregation Principle (ISP), Dependency Inversion Principle (DIP).