ServiceNow Placement Papers 2026 - Questions and Solutions

Last Updated: March 2026

Company Overview

ServiceNow is a cloud computing platform that provides enterprise digital workflow solutions for IT, employee, and customer workflows. Founded in 2004, ServiceNow has become a leader in IT service management (ITSM) and enterprise workflow automation.

Selection Process

Stage	Description	Duration
Online Assessment	Aptitude, Technical MCQ, Coding	90 minutes
Technical Interview	CS fundamentals, JavaScript	45-60 minutes
HR Interview	Behavioral, Culture fit	30 minutes

Eligibility:

60% in 10th, 12th, Graduation
No active backlogs
CS/IT/MCA preferred

Exam Pattern

Section	Questions	Time	Topics
Aptitude	25	30 min	Quant, Logical, Verbal
Technical MCQ	20	20 min	JavaScript, Web, DBMS
Coding	2	40 min	Algorithms

Aptitude Questions

1. A number divided by 357 leaves remainder 39. What is the remainder when divided by 17?

Solution: Number = 357k + 39 357 = 17 × 21, so 357k is divisible by 17 39 ÷ 17 = 2 remainder 5 Answer: 5

2. Find next: 2, 5, 10, 17, 26, ?

Solution: Pattern: n² + 1 1²+1=2, 2²+1=5, 3²+1=10, 4²+1=17, 5²+1=26 Next = 6²+1 = 37

3. A train 150m long crosses a platform in 18 sec at 60 km/hr. Find platform length.

Solution: Speed = 60 × 5/18 = 50/3 m/s Distance = Speed × Time = 50/3 × 18 = 300m Platform = 300 - 150 = 150 meters

4. CP of 20 articles equals SP of 16 articles. Find gain%.

Solution: 20×CP = 16×SP → SP/CP = 20/16 = 5/4 Gain = 1/4 = 25%

5. Find the unit digit of 7^43.

Solution: Cycle of 7: 7, 9, 3, 1 (repeats every 4) 43 ÷ 4 = 10 remainder 3 3rd in cycle = 3

Technical Questions

1. What is the difference between let and var in JavaScript?

var: Function-scoped, can be redeclared, hoisted
let: Block-scoped, cannot be redeclared, hoisted but not initialized

2. What is event delegation?

3. Explain closures in JavaScript.

function outer() {
    let count = 0;
    return function inner() {
        return ++count;
    };
}

4. What is REST API?

5. What is the difference between SQL and NoSQL?

SQL: Structured, ACID, vertical scaling, predefined schema
NoSQL: Flexible, BASE, horizontal scaling, dynamic schema

6. Explain promises in JavaScript.

const promise = new Promise((resolve, reject) => {
    // async operation
    if (success) resolve(value);
    else reject(error);
});

7. What is dependency injection?

8. What are CSS flexbox and grid?

Flexbox: One-dimensional layout (row or column)
Grid: Two-dimensional layout (rows and columns)

9. Explain prototype chain in JavaScript.

10. What is CORS?

Coding Questions

1. Flatten a nested array.

function flatten(arr) {
    return arr.reduce((acc, val) => 
        Array.isArray(val) ? acc.concat(flatten(val)) : acc.concat(val), 
    []);
}

// Test
console.log(flatten([1, [2, [3, 4], 5]]));  // [1, 2, 3, 4, 5]

2. Implement debounce function.

function debounce(func, wait) {
    let timeout;
    return function(...args) {
        clearTimeout(timeout);
        timeout = setTimeout(() => func.apply(this, args), wait);
    };
}

// Usage
const debouncedSearch = debounce((query) => {
    console.log('Searching for:', query);
}, 300);

3. Deep clone an object.

function deepClone(obj) {
    if (obj === null || typeof obj !== 'object') return obj;
    if (obj instanceof Date) return new Date(obj);
    if (obj instanceof Array) return obj.map(item => deepClone(item));
    if (obj instanceof Object) {
        const cloned = {};
        for (let key in obj) {
            if (obj.hasOwnProperty(key)) {
                cloned[key] = deepClone(obj[key]);
            }
        }
        return cloned;
    }
}

// Or using modern approach
function deepCloneModern(obj) {
    return JSON.parse(JSON.stringify(obj));
}

4. Group array elements by property.

function groupBy(arr, key) {
    return arr.reduce((acc, obj) => {
        const group = obj[key];
        acc[group] = acc[group] || [];
        acc[group].push(obj);
        return acc;
    }, {});
}

// Test
const people = [
    { name: 'Alice', department: 'IT' },
    { name: 'Bob', department: 'HR' },
    { name: 'Charlie', department: 'IT' }
];
console.log(groupBy(people, 'department'));
// { IT: [Alice, Charlie], HR: [Bob] }

5. Find first recurring character.

function firstRecurring(str) {
    const seen = new Set();
    for (let char of str) {
        if (seen.has(char)) return char;
        seen.add(char);
    }
    return null;
}

// Test
console.log(firstRecurring('hello'));  // 'l'
console.log(firstRecurring('abcdef')); // null

Interview Tips

Master JavaScript fundamentals
Understand web technologies (HTML, CSS, HTTP)
Practice algorithm problem solving
Learn basics of ITSM
Research ServiceNow platform
Practice coding in JavaScript
Understand cloud computing basics

Best of luck with your ServiceNow placement!

Servicenow Placement Papers 2026