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Blackrock

298 Questions31 Aug 2026Online Assessment

On Campus---------------Delhi Technological University (DTU)Manipal UniversityNIT Raipur-----------

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0 / 298solved

Resource Allocation Across Two Storage Rows

CodingSolve

When Observer Cascades Become Unpredictable

MCQPremium

Registry Backed Factory For Strategy Lookup

MCQPremium

Cost Of Factory Method Over Direct Instantiation

MCQPremium

Choosing Payment Objects By User Input

MCQPremium

Replayable Driver Actions With Retry Support

MCQPremium

Swappable Recommendation Algorithms Per Request

MCQPremium

Stackable Toggleable Wrappers Around An API Client

MCQPremium

Conforming Third Party Plugin APIs To One Interface

MCQPremium

Uniform Traversal Across Differently Ordered Task Queues

MCQPremium

Decoupled Fan Out On Device State Change

MCQPremium

Fixed Scraping Pipeline With Site Specific Parsing

MCQPremium

Single Entry Point Over Legacy ERP Reporting

MCQPremium

Uniform Valuation of Positions and Sub-Portfolios

MCQPremium

Dynamic Subscribers for Trade Execution Notifications

MCQPremium

Fixed Import Pipeline With Format-Specific Steps

MCQPremium

Single Shared Log File Handle Across Components

MCQPremium

Primary Intent of the Adapter Pattern

MCQPremium

Cardinality of the Subject-Observer Relationship

MCQPremium

SOLID Principle Of One Reason To Change

MCQPremium

Pattern Behind Wrapping Streams With Buffering

MCQPremium

Single Product Versus Coordinated Product Suite

MCQPremium

What Dependency Inversion Actually Requires

MCQPremium

When Abstract Factory Beats Factory Method

MCQPremium

GoF Foundation Of The Repository Pattern

MCQPremium

SOLID Violation in a Multi-Purpose UserService

MCQPremium

Singleton Global State and Test Isolation

MCQPremium

Spring AOP Proxies and Interface Proxy Limits

MCQPremium

Principal Risk of Template Method Hook Methods

MCQPremium

Sensitive Client Data in Unmanaged AI Tools

MCQPremium

Defining Bias in AI Model Output

MCQPremium

When Human Review Of AI Output Matters

MCQPremium

Defining Prompt Injection In LLM Systems

MCQPremium

Purpose Of Citations In RAG Answers

MCQPremium

Document-Level Permissions In RAG Retrieval

MCQPremium

Identifying A Clear AI Data Leakage Case

MCQPremium

Programmatic Validation Of Structured Model Output

MCQPremium

Why Databases Belong In Private Subnets

MCQPremium

Role Of Security Groups In Traffic Control

MCQPremium

Primary Function Of A Web Application Firewall

MCQPremium

Primary Risk Of A Publicly Readable Storage Bucket

MCQPremium

Purpose Of Periodic Secret And Key Rotation

MCQPremium

Best Reason To Keep Secrets Out Of Logs

MCQPremium

Why Cloud Data Egress Matters In Design

MCQPremium

Core Function Of A Load Balancer

MCQPremium

Logical Versus Physical Database Storage Structures

MCQPremium

Storing Live Driver Locations For Sub-50ms Reads

MCQPremium

Normalization Trade-Off Between Integrity And Retrieval

MCQPremium

Choosing A Partition Key For A User Table

MCQPremium

Updating A Column Through A JDBC ResultSet

MCQPremium

Surviving Bad Rows In A FORALL Insert

MCQPremium

Candidate Key From Five Functional Dependencies

MCQPremium

Anti-Join Check For Orphaned Child Rows

MCQPremium

Testing A Required Column For NULL Values

MCQPremium

Detecting Repeated Primary Key Values

MCQPremium

Finding Repeated Email Addresses With HAVING

MCQPremium

Aggregate Functions That Skip NULL Inputs

MCQPremium

Non-Aggregated Column In A Grouped Select

MCQPremium

Result Of Grouping Salary Average By Department

MCQPremium

Filtering Departments By Employee Count Threshold

MCQPremium

Z-Ordering Caching And AQE On Delta Table

MCQPremium

Highest Normal Form For BC E Dependencies

MCQPremium

Loading Every Two Hundredth Source Record

MCQPremium

Spring Data JPA Update Query Without Modifying

MCQPremium

Where The Surprise Test Elimination Argument Breaks

MCQPremium

Counting Arrangements With Adjacency And Order Limits

MCQPremium

Vacuously True Claim About Engineer Knowledge

MCQPremium

Minimum Races To Rank Top Four Horses

MCQPremium

Fastest Torch Crossing For Four Walkers

MCQPremium

Single Weighing To Find The Heavy Bottle

MCQPremium

Expected Moves For Spider To Opposite Cube Corner

MCQPremium

Assigning Four Snacks From Elimination Clues

MCQPremium

Row Two Placement Count In Twelve Queens

MCQPremium

Drawing Two Defective Chips Without Replacement

MCQPremium

Posterior Probability After A Positive Screening Test

MCQPremium

Safe Lattice Paths Avoiding Two Mined Cells

MCQPremium

Cache Size at Query Times With TTL Expiry

CodingPremium

Multithreaded Unique Word Counter

CodingPremium

City Teams of Three

SQLPremium

Expected Value of a Skewed Venture Payoff

MCQPremium

Inflation and Real Returns: Cumulative Real Gain Over Ten Years

MCQPremium

Data Leakage: When It Occurs

MCQPremium

Feature Engineering: What One-Hot Encoding Is For

MCQPremium

Visible Towers

CodingPremium

Top N Letters and Words

CodingPremium

Selenium Java: Failure Page Source Capture

PromptPremium

Word-Score Flowchart: The Inner Loop Exit Test

MCQPremium

Word-Score Flowchart: Scoring a Consonant

MCQPremium

Word-Score Flowchart: The Outer Loop Counter

MCQPremium

The Word That Is Not an Oracle SET Operator

MCQPremium

What a UNION of EMPLOYEES and JOB_HISTORY Returns

MCQPremium

Root After Deleting and Reinserting 45 in the AVL Tree

MCQPremium

Output of operate on the Array-Encoded Tree

MCQPremium

In-order Traversal of the Twelve-Key BST

MCQPremium

Post-order Traversal of the Twelve-Key BST

MCQPremium

Pre-order Traversal of the Twelve-Key BST

MCQPremium

Change in the Number of Left Children After Mirroring

MCQPremium

Root of the Tree After the Mirror Routine

MCQPremium

Flowchart Word Scorer: What Goes in Cell 4

MCQPremium

100

Depth of the Mirrored Binary Tree

MCQPremium

101

Spotting Wrong Customer IDs Against Contact Numbers

MCQPremium

102

Two-Squares Flowchart: Splitting the Number

MCQPremium

103

Flowchart Word Scorer: What Goes in Cell 3

MCQPremium

104

Confirming Correct Contact Numbers for Five Customers

MCQPremium

105

Two-Squares Flowchart: Marking the First Representation

MCQPremium

106

Spotting Wrong Contact Numbers for Five Customers

MCQPremium

107

Matching Drill and Cutter Part Numbers to Their Names

MCQPremium

108

Prime-Sum Flowchart: Advancing the Candidate

MCQPremium

109

Matching Punch and Reamer Parts to Their Part Numbers

MCQPremium

110

Flowchart Word Scorer: What Goes in Cell 1

MCQPremium

111

Seven in a Row: Which Pair Sits Together

MCQPremium

112

Prime-Sum Flowchart: Advancing the Trial Divisor

MCQPremium

113

Drill and Cutter Codes: Matching Numbers to Names

MCQPremium

114

Maximum Average Annual Growth from 1996 to 2000

MCQPremium

115

Prime-Sum Flowchart: Initialising the Trial Divisor

MCQPremium

116

Highest Five-Year Average Paper Production

MCQPremium

117

Largest Single-Year Growth in Paper Production

MCQPremium

118

Prime-Sum Flowchart: the Loop Termination Test

MCQPremium

119

Phone Numbers and Customer IDs: The Wrong Pairings

MCQPremium

120

Missing Term in the Series 1, 3, 2, 8, 5, __, 26

MCQPremium

121

Which Word Comes Next

MCQPremium

122

Filling the CY Cell of a 3x3 Equal-Sum Grid

MCQPremium

123

Multi-Linked Structure Used for Storing Images

MCQPremium

124

Punches and Reamers: Which Part Numbers Are Right

MCQPremium

125

Coding CRYSTAL When ABSOLUTE Is 1CT4M5V2

MCQPremium

126

Coding PALLAVI in the DEEPALI Language

MCQPremium

127

Contrapositive of John's Work-and-Pay Conditional

MCQPremium

128

Internal Storage Structure of a Relational Database

MCQPremium

129

Value of the Symbolic Expression

MCQPremium

130

Fastest Average Annual Growth Over Five Years

MCQPremium

131

Juice-to-Pulp Ratio After a 300 g Apple Dries to 200 g

MCQPremium

132

Minimum and Maximum Nodes Traversed in a BST Search

MCQPremium

133

When Five Visitors at Intervals 1 to 5 Next Coincide

MCQPremium

134

What G Wanted to Become

MCQPremium

135

Finding X When Ten More Men Save Twenty Days

MCQPremium

136

New Root After Inserting 10 into the BST

MCQPremium

137

Seven in a Row: Who Sits Side by Side

MCQPremium

138

Probability of Rolling a Sum of Nine with Two Dice

MCQPremium

139

Income Tax Increase and Implicit Assumptions

MCQPremium

140

Function That Prints the In-Order Traversal

MCQPremium

141

Probability a Drawn Card Is a Spade or a Queen

MCQPremium

142

Largest Year-on-Year Jump in Paper Output

MCQPremium

143

Litres of 10% Solution Added to Reach 12% Salt

MCQPremium

144

Function That Prints the Post-Order Traversal

MCQPremium

145

Stoppage Minutes per Hour at 64 and 55 kmph

MCQPremium

146

Data Sufficiency: Profit or Loss on Apples

MCQPremium

147

AVL Root After Deleting and Re-inserting 45

MCQPremium

148

Total Principal from Matching Simple and Compound Interest

MCQPremium

149

Function That Prints the Pre-Order Traversal

MCQPremium

150

Sugar Expenditure After a 20% Price Rise and 25% Cut

MCQPremium

151

Mirroring a BST: The Root Afterwards

MCQPremium

152

Completing the preOrder Scanner for the Prefix Form

MCQPremium

153

Ratio Expression from a/b = 2/3 and c/b = 3/2

MCQPremium

154

Syllogism: All Jokers Are Kings, Some Kings Are Red

MCQPremium

155

Mirroring a BST: Change in Left-Child Count

MCQPremium

156

Postfix Form of a Parenthesised Expression

MCQPremium

157

Cost of R Pens and R Markers

MCQPremium

158

Return Value of operate(root, 4) on a Seven-Node Tree

MCQPremium

159

Prefix Form of a Parenthesised Expression

MCQPremium

160

Data Sufficiency: Whose Savings Are the Highest

MCQPremium

161

What the Recursive operate() Function Does

MCQPremium

162

Interleaved Squares Series: 1, 3, 2, 8, 5, ?, 26

MCQPremium

163

BST In-order Traversal of a Twelve-Key Insert

MCQPremium

164

Completing a Nine-Number Equal-Sum Grid

MCQPremium

165

BST Post-order Traversal of a Twelve-Key Insert

MCQPremium

166

What the Three-Table SELECT Represents

MCQPremium

167

Which Symbol-Substituted Inequality Is False

MCQPremium

168

BST Pre-order Traversal of a Twelve-Key Insert

MCQPremium

169

UNION ALL of Two Single-Row Queries

MCQPremium

170

Return Value of CONNECT_BY_ISCYCLE

MCQPremium

171

Two Typists, One Three Times Faster

MCQPremium

172

Data Sufficiency: Counting the Girls in a Class

MCQPremium

173

Which Statement Follows From a Compound Conditional

MCQPremium

174

Unique Combinations of Two Columns

MCQPremium

175

Ram's Maximum Average Weekly Wage

MCQPremium

176

Juice to Pulp in a Dried Apple

MCQPremium

177

Engine Power: Compensating a Bore Increase

MCQPremium

178

Employees with More Than Ten Years of Service

MCQPremium

179

Five Visitors on Different Cycles Meet Again

MCQPremium

180

Four Friends, Ten Hotels, At Least One Shared

MCQPremium

181

Creating a View over Column Aliases

MCQPremium

182

Ten Extra Men Finish Twenty Days Sooner

MCQPremium

183

Guaranteed Divisor of Three Consecutive Even Numbers

MCQPremium

184

Column Count of a Cross Join

MCQPremium

185

Rolling a Total of Nine With Two Dice

MCQPremium

186

Vowels Together in MULTIPLE

MCQPremium

187

Nested ROUND, TRUNC and MOD on 1600

MCQPremium

188

Spade or Queen From a Standard Deck

MCQPremium

189

Men and Boys Painting a Wall

MCQPremium

190

Character Function That Returns a Number

MCQPremium

191

When Two Simple Interests Coincide

MCQPremium

192

Group Function for a Department Sales Total

MCQPremium

193

Diluting a 20% Salt Solution Down to 12%

MCQPremium

194

Eight Friends in a Circle: Which Statement Holds

MCQPremium

195

Minutes a Train Stops per Hour

MCQPremium

196

Rounding a Date to the Nearest Year

MCQPremium

197

Six-Month Sales Graph: Best Average Monthly Growth

MCQPremium

198

Split Savings Across Simple and Compound Bonds

MCQPremium

199

Six-Month Sales Graph: Minimum Total Revenue

MCQPremium

200

Sugar Bill After a Price Rise and a Consumption Cut

MCQPremium

201

How NVL2 Differs from NVL

MCQPremium

202

Six-Month Sales Graph: Highest Average Revenue

MCQPremium

203

CLOB Result Exceeding the Maximum Length

MCQPremium

204

Trains and Platform: Pick the Valid Deduction

MCQPremium

205

Arithmetic Operator for a Product

MCQPremium

206

Grocer's Apple Profit Expression

MCQPremium

207

Part Catalogue: Matching the Mild Steel Washer

MCQPremium

208

Correct Definition of a View

MCQPremium

209

Milkman's Extra Water and Extra Price

MCQPremium

210

Part Catalogue: Spotting the Ball-Bearing Match

MCQPremium

211

Valid Representation of DDL

MCQPremium

212

Ratio Algebra: Squares of a and c Over b

MCQPremium

213

Annual Compensation with a Monthly Bonus

MCQPremium

214

Marble Game Flowchart: The Termination Test

MCQPremium

215

Which Is Not a Valid Character Set

MCQPremium

216

Address Register Lookup: Barbara Richart

MCQPremium

217

Marble Game Flowchart: Keeping the Score Non-Negative

MCQPremium

218

Address Register Lookup: Lucille Gordon

MCQPremium

219

Marble Game Flowchart: Scoring the Blue Pair

MCQPremium

220

Address Register Lookup: Jessica Pope

MCQPremium

221

Default Precision of INTERVAL YEAR TO MONTH

MCQPremium

222

Marble Game Flowchart: The First Decision

MCQPremium

223

Part Catalogue Audit: Feed Arm Lever Cam Roll Code

MCQPremium

224

Median Flowchart: Choosing the Median Formula in Cell 5

MCQPremium

225

Part Catalogue Lookup: Spotter Head Clamp

MCQPremium

226

Median Flowchart: The Pass-End Test in Cell 4

MCQPremium

227

Part Catalogue Audit: Spotter Plungers Code

MCQPremium

228

Median Flowchart: The Comparison in Cell 2

MCQPremium

229

Which SET Operator Does Not Exist

MCQPremium

230

Pole in the River: Deducing Its Length from the Rise

MCQPremium

231

Recovering a View's Defining Query

MCQPremium

232

The Parts of a Python List Comprehension

MCQPremium

233

UNION Across EMPLOYEES and JOB_HISTORY

MCQPremium

234

Customer Directory: The Only Correct Pairing

MCQPremium

235

Sum-of-Two-Squares Flowchart: Cell 5

MCQPremium

236

Customer Directory: Both Pairings Wrong

MCQPremium

237

Sum-of-Two-Squares Flowchart: Cell 4

MCQPremium

238

Customer Directory: Isolating the Wholly Incorrect Pairings

MCQPremium

239

Sum-of-Two-Squares Flowchart: Cell 2

MCQPremium

240

Printing Three Unpacked Values in Python 2

MCQPremium

241

Sum-of-Two-Squares Flowchart: Cell 1

MCQPremium

242

List Comprehension Producing [5, 5, 8] from a Matrix

MCQPremium

243

Implicit Assumptions Behind a Productivity Bonus

MCQPremium

244

Coded Operations: Evaluating F(F(E12 A E16) C F(50 B 5 C 5))

MCQPremium

245

Converting a List of Months to a Set

MCQPremium

246

Seven-Digit Numbers from a Digit Set Containing Zero

MCQPremium

247

Six People on a Line: Who Are Neighbours

MCQPremium

248

Data Sufficiency: The Class Average in Mathematics

MCQPremium

249

Three-Product Sales Chart: The Peak Month

MCQPremium

250

Diamonds, Thieves and Angels: What Kathy Keeps

MCQPremium

251

Average Speed over Two Legs in Ratio 2 : 3

MCQPremium

252

Data Sufficiency: Is x - y Positive

MCQPremium

253

Probability of Centuries in Four Specified Matches

MCQPremium

254

Loss in Value When a Diamond Breaks in Three

MCQPremium

255

Reaping the Field with More Men and Longer Days

MCQPremium

256

Twenty Percent Shorter, But How Much Taller

MCQPremium

257

Part Catalogue: Which Spring Code Matches Its Description

MCQPremium

258

Least Digit Making 451?603 Divisible by 9

MCQPremium

259

Games, Sports and Gambles: Which Conclusion Always Follows

MCQPremium

260

Doubling the Selling Price Quadruples the Profit

MCQPremium

261

Listing Departments Chronologically by Formation Date

MCQPremium

262

Classifying CREATE, SELECT, MERGE, RENAME, DROP and DELETE

MCQPremium

263

Which Employee Name Matches LIKE 'jack%'

MCQPremium

264

Clauses Allowed in the SELECT That Defines a View

MCQPremium

265

Result of ABS(+45) + ABS(-15) From DUAL

MCQPremium

266

Rows Returned by sal > ANY Intersected with sal < ALL

MCQPremium

267

Selecting ROWNUM From DUAL Filtered on ROWNUM

MCQPremium

268

Ensuring salary * Hike_percent Always Displays a Value

MCQPremium

269

Single Row Functions Versus Multiple Row Functions

MCQPremium

270

Which Statement About a Database Table Is True

MCQPremium

271

The Relational Principle Behind SELECT Search Criteria

MCQPremium

272

Which SQL Category the INSERT Statement Belongs To

MCQPremium

273

DECODE Compared Against a NULL Search Value

MCQPremium

274

Which Statement About the Set Operators Is True

MCQPremium

275

Function That Manipulates Character, Number or Date Columns

MCQPremium

276

CASE Expression Substituting 99 for a NULL Commission

MCQPremium

277

Recovering the Base Query of a Forgotten View

MCQPremium

278

Output of Sub.method Chaining Back to Super.method

MCQPremium

279

Valid Data Types for a Dictionary Key in Python

MCQPremium

280

Setting Trace Hooks to Monitor Functions in a Program

MCQPremium

281

Which Empty Class Definitions Run Without Error

MCQPremium

282

Comparing Two Sets After update With Existing Members

MCQPremium

283

Opening a Text File for Reading in Python

MCQPremium

284

Joining a Path List with '/'.join

MCQPremium

285

Calling str.partition With No Argument

MCQPremium

286

Centring a String to Width 24 with Asterisks

MCQPremium

287

Result of s[:1] + s[1:] for Any String

MCQPremium

288

Coding Language: RAINDROP Written as TCKPBPMN

MCQPremium

289

Build the List [3, 2, 1, 0, 1, 4] with append

MCQPremium

290

Median Flowchart: Recording That a Swap Happened

MCQPremium

291

Median Flowchart: Initialisation Before the Sort Loop

MCQPremium

292

Sprinter Speed Ratio Before and After Coaching

MCQPremium

293

Few-Shot Prompting: What Drives the Improvement

MCQPremium

294

Primary Benefit of k-Fold Cross Validation

MCQPremium

295

Embeddings Represent Text As

MCQPremium

296

Effect of Low Sampling Temperature

MCQPremium

297

Minimum Height

CodingPremium

298

Airport Baggage Handling System

CodingPremium