# PwC Core CS Questions with Answers

6 previously-asked core cs questions from PwC's hiring process, each with the correct answer and a worked explanation. Written against the company's actual test pattern.

_Source: Astra (https://useastra.in). Updated 2026-09-05._

### 1. What does SQL stand for?

A. Structured Query Language
B. Simple Question Language
C. Sequential Query Logic
D. System Query Language

**Answer:** Structured Query Language

**Explanation:** SQL stands for Structured Query Language, used to manage relational databases.

### 2. Which Excel function adds up a range of numbers?

A. SUM
B. ADD
C. TOTAL
D. PLUS

**Answer:** SUM

**Explanation:** The SUM function totals a range of cells in a spreadsheet.

### 3. Which of the following is a cloud service model?

A. SaaS
B. HTML
C. TCP
D. CPU

**Answer:** SaaS

**Explanation:** SaaS (Software as a Service) is a cloud delivery model; the others are unrelated terms.

### 4. Which SQL clause is used to filter rows based on a condition?

A. WHERE
B. ORDER
C. JOIN
D. INDEX

**Answer:** WHERE

**Explanation:** The WHERE clause restricts which rows a query returns.

### 5. What does a primary key do in a database table?

A. Uniquely identifies each row
B. Sorts the table
C. Encrypts the data
D. Deletes rows

**Answer:** Uniquely identifies each row

**Explanation:** A primary key uniquely identifies every row and cannot be null.

### 6. What is data visualization primarily used for?

A. Presenting data insights graphically
B. Compiling code
C. Encrypting files
D. Configuring networks

**Answer:** Presenting data insights graphically

**Explanation:** Data visualization presents information as charts and graphs to make insights clear.

More PwC preparation, including the full recruitment process: https://useastra.in/campus/pwc