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About the test:

Softwaresystemets design online-test bruger scenariebaserede MCQ'er til at evaluere kandidater om deres færdigheder i at designe softwaresystemer, der opfylder funktionelle og ikke-funktionelle krav. Test vurderer kandidaternes evne til at identificere systemkrav, vælge passende arkitekturer og designmønstre og skabe designspecifikationer på højt niveau. Det fokuserer på databasedesign, datamodellering, systemintegration, sikkerhed, præstationsoptimering og kvalitetssikring.

Covered skills:

  • Systemdesign
  • Netværksprotokoller
  • Distribuerede systemer
  • Præstationsoptimering
  • Algoritme og datastrukturer
  • Databasedesign
  • Skyen
  • Microservices Arkitektur

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9 reasons why
9 reasons why

Adaface System Design Test is the most accurate way to shortlist Software ingeniørs



Reason #1

Tests for on-the-job skills

The System Design Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

  • I stand til at designe skalerbare og effektive systemarkitekturer
  • I stand til at analysere og optimere ydeevne i distribuerede systemer
  • Dygtige til at designe og implementere databaseskemaer
  • Dygtige til at forstå og bruge netværksprotokoller
  • Ekspertise inden for cloud computing -teknologier og koncepter
  • Vidende i mikroservices arkitekturprincipper
  • I stand til at anvende algoritmer og datastrukturer for at løse komplekse problemer
  • I stand til at optimere ydelsen i systemdesign
  • Erfaret med at arbejde med store distribuerede systemer
  • Dygtige til at designe fejltolerante og meget tilgængelige systemer
Reason #2

No trick questions

no trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface
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Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

Dette er kun en lille prøve fra vores bibliotek med 10.000+ spørgsmål. De faktiske spørgsmål om dette Softwaresystemdesign online test vil være ikke-gåbart.

🧐 Question

Medium

Optimal Data Replication and Consistency in Distributed Systems
Data Consistency
Load Balancing
Fault Tolerance
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Consider a distributed e-commerce platform designed to handle high traffic volumes and ensure data consistency across its services. The platform uses a distributed database that replicates data across multiple nodes to increase availability and performance. To balance the load, it employs a load balancer that distributes user requests evenly across these nodes. The system is designed to tolerate the failure of up to two nodes without affecting the platform's overall availability.

Given the critical requirement for strong consistency to prevent issues such as overselling of products, the system uses a consensus algorithm for replication. The database is configured with a replication factor of 5, meaning each piece of data is stored on 5 nodes. For read and write operations to be considered successful, they must be acknowledged by a majority of the nodes involved in the operation.

Assuming all nodes have equal hardware resources and network latency between nodes is negligible, which of the following configurations would best meet the platform's requirements for high availability, performance, and strong consistency?
A: Reads require acknowledgment from 2 nodes, and writes require acknowledgment from 4 nodes.
B: Reads and writes both require acknowledgment from 3 nodes.
C: Reads require acknowledgment from 3 nodes, and writes require acknowledgment from 2 nodes.
D: Reads and writes both require acknowledgment from 4 nodes.
E: Reads require acknowledgment from 1 node, and writes require acknowledgment from 5 nodes.
F: Reads and writes both require acknowledgment from 5 nodes.

Easy

Real-time Vehicle Tracking for Logistics Company
Data Storage
Scalability
Real-time Updates
NoSQL
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TransitTrack is a logistics company that needs to store real-time location data (latitude, longitude) of their vehicles as they move across the city. The system should be optimized for fast read and write operations to provide real-time tracking. TransitTrack can tolerate occasional data loss since the vehicle locations are updated frequently. Which of the following data storage solutions should TransitTrack implement for their vehicle tracking system?
A: Utilize a relational database management system (RDBMS) like PostgreSQL with a table indexed on the vehicle_id column for efficient data insertion and retrieval.
B: Implement an in-memory cache like Redis to store the vehicle location data, with the vehicle_id as the key and the latitude-longitude pair as the value.
C: Use a document-oriented database like MongoDB to store the vehicle location data as GeoJSON documents, enabling geospatial querying capabilities.
D: Develop a custom in-memory data structure using a spatial indexing technique like an R-tree to store and query the vehicle location data efficiently.
E: Use a time-series database like InfluxDB to store the vehicle location data along with timestamps, allowing for efficient querying and analysis of historical location data.

Medium

Session stickiness with ELB
Cookies
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Johnny Bravo is setting up a new e-commerce store for men's clothing. He set up session stickiness with ELB. But he does not want ELB to manage the cookie, he wants the application to manage the cookie. When the server instance, which is bound to a cookie, crashes what do you expect will happen?
A: ELB will throw an error due to cookie unavailability
B: The response will have a cookie but stickiness will be deleted
C: The session will be sticky and ELB will route requests to another server as ELB keeps replicating the Cookie
D: The session will not be sticky until a new cookie is inserted

Medium

Updating UI after Encoding
UI Design
Decoupling
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Imagine you’re a developer at Songbird Inc, working on a music editing app for mobile devices. The app allows users to edit audio clips and export them in various audio formats. Once a user finishes editing a clip, they can choose an output format and initiate the encoding process. This encoding process can take a while depending on the chosen format and the length of the clip. Because it’s a mobile app, you want to avoid freezing the UI while encoding is in progress.

What’s the most appropriate approach to notify the user when the encoding is complete and the exported file is ready?
A: Directly modify the UI elements from within the encoding logic. When encoding finishes, the encoding system can directly tell the UI components to update themselves with the new information (e.g., change a button text to “Export Complete”).
B: Separate the UI update logic from the encoding process. The encoding system should trigger a custom event (e.g., “EncodingFinishedEvent”) upon completion. UI components can listen for this event and update themselves accordingly when it’s received.
C:  Have the UI code continuously check on the encoding status with a loop (often referred to as busy waiting or polling). The loop would keep checking a flag or variable set by the encoding system until the encoding is complete. Once complete, the UI can update itself.
D:  Introduce a central message queue or event bus. The encoding system can publish a message to the message queue upon finishing the task. Separate UI update logic would be subscribed to the queue, listening for relevant messages. When it receives the message about encoding completion, it can update the UI.
E: Let the encoding logic return a callback function to the UI layer when it’s initiated. Once encoding is finished, the encoding system calls back this function, allowing the UI to update itself.

Medium

Decryptor
Strings
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What does the following pseudo code print?
 image

Hard

Fibonacci codes
Time Complexity
Pseudo Code
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Here are three pseudocodes for calculating the Nth Fibonacci number. Which of the following statements about these codes are true?
 image
A: Time complexity/efficiency of CODE 1, CODE 2, CODE 3 is the same.
B: CODE 2 is more space-efficient than CODE 3.
C: CODE 3 is more space-efficient than CODE 2.
D: CODE 2 is more time-efficient than CODE 1.
E: CODE 3 is more time-efficient than CODE 1.

Hard

Palindrome Test cases
Strings
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Go through the following faulty palindrome detection pseudocode and test cases. For which of the test cases would the code return true?
 image
Testcases
A: a
B: aba
C: aaa
D: aac

Medium

Rewards Activities Order
Database Connection
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A new popular app tracks the activities performed by its users and grants them rewards based on each individual's total activities performed in a year. This data is maintained in a database table (activitesinfo), with the following columns: userid, totalactivities, reward. This year, due to fundraising activity, the company has decided to further reward its users by enhancing the reward as per the following formula: If reward < = 4000, increase it by 2%, If 4000 < reward <= 8000, increase it by 4%, If reward > 8000, increase it by 6%.
The tech team has written three different scripts to calculate increment for each slab, each script is to run as a separate transaction. Here are the three scripts:
Script 1:
For users with reward <= 4000, set reward = reward * 1.02

Script 2:
For users with reward > 4000 and reward <= 8000, set reward = reward * 1.04

Script 3:
For users with reward > 8000, set reward = reward * 1.06
Each script is to be executed separately. Which of the following options will update the rewards as expected:
A: Execute Script 1 followed by Script 2 followed by Script 3
B: Execute Script 2 followed by Script 3; Script 1 running concurrently throughout
C: Execute Script 3 followed by Script 2; Script 1 running concurrently throughout
D: Execute Script 3 followed by Script 2 followed by Script 1
E: Execute Script 2 followed by Script 3 followed by Script 1

Hard

Graph Traversal and Data Storage
Graph Theory
Algorithm Analysis
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Consider the following pseudo code implementing a specific graph traversal algorithm:
 image
What is the order in which the nodes are processed, and which data structure best represents the graph `G` for efficient traversal?

Medium

Implementing a Browser's Back Button
Stack
Data Handling
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You are tasked with implementing the "Back" button functionality in a web browser. This feature allows users to return to previously visited web pages in the order they were viewed. The browser maintains a history of URLs in a data structure. Considering the nature of web browsing, where users can go back multiple steps and then navigate to a new page (at which point the future history should be cleared), which data structure and algorithm would best implement this functionality?
A: Use a heap, add the current URL when navigating to a new page, and remove the top element when the back button is used.
B: Use a queue, enqueue the current URL when navigating to a new page, and dequeue when the back button is used.
C: Use a single stack, push the current URL when navigating to a new page, and pop when the back button is used.
D: Use an array, add the current URL to the end when navigating to a new page, and remove the last URL when the back button is used.
E: Use a linked list, add the current URL to the head when navigating to a new page, and move backwards when the back button is used.
F: Use two stacks, push the current URL to the first stack when navigating to a new page, and use the second stack to store the pages when the back button is used.

Easy

Linked List Element Removal
Linked Lists
Element Removal
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Consider a singly linked list where each node contains an integer value. Write a function `removeElement` that removes all occurrences of a specific value from the linked list. The function should return the head of the modified linked list.

Pseudo code:
 image
What will be the content of the linked list referred to by `result` after executing the above pseudo code?
🧐 Question🔧 Skill

Medium

Optimal Data Replication and Consistency in Distributed Systems
Data Consistency
Load Balancing
Fault Tolerance

2 mins

System Design
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Easy

Real-time Vehicle Tracking for Logistics Company
Data Storage
Scalability
Real-time Updates
NoSQL

2 mins

System Design
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Medium

Session stickiness with ELB
Cookies

2 mins

System Design
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Medium

Updating UI after Encoding
UI Design
Decoupling

2 mins

System Design
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Medium

Decryptor
Strings

2 mins

Technical Aptitude
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Hard

Fibonacci codes
Time Complexity
Pseudo Code

2 mins

Technical Aptitude
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Hard

Palindrome Test cases
Strings

2 mins

Technical Aptitude
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Medium

Rewards Activities Order
Database Connection

3 mins

Technical Aptitude
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Hard

Graph Traversal and Data Storage
Graph Theory
Algorithm Analysis

3 mins

Data Structures
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Medium

Implementing a Browser's Back Button
Stack
Data Handling

2 mins

Data Structures
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Easy

Linked List Element Removal
Linked Lists
Element Removal

2 mins

Data Structures
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🧐 Question🔧 Skill💪 Difficulty⌛ Time
Optimal Data Replication and Consistency in Distributed Systems
Data Consistency
Load Balancing
Fault Tolerance
System Design
Medium2 mins
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Real-time Vehicle Tracking for Logistics Company
Data Storage
Scalability
Real-time Updates
NoSQL
System Design
Easy2 mins
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Session stickiness with ELB
Cookies
System Design
Medium2 mins
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Updating UI after Encoding
UI Design
Decoupling
System Design
Medium2 mins
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Decryptor
Strings
Technical Aptitude
Medium2 mins
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Fibonacci codes
Time Complexity
Pseudo Code
Technical Aptitude
Hard2 mins
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Palindrome Test cases
Strings
Technical Aptitude
Hard2 mins
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Rewards Activities Order
Database Connection
Technical Aptitude
Medium3 mins
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Graph Traversal and Data Storage
Graph Theory
Algorithm Analysis
Data Structures
Hard3 mins
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Implementing a Browser's Back Button
Stack
Data Handling
Data Structures
Medium2 mins
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Linked List Element Removal
Linked Lists
Element Removal
Data Structures
Easy2 mins
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Reason #4

1200+ customers in 75 countries

customers in 75 countries
Brandon

Med Adaface var vi i stand til at optimere vores indledende screeningsproces med op mod 75 %, hvilket frigjorde kostbar tid for både ansættelsesledere og vores talentanskaffelsesteam!


Brandon Lee, Leder af mennesker, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Softwaresystemdesign online test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests
Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Softwaresystemdesign online test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

invite candidates
Reason #7

Detailed scorecards & benchmarks

Se prøvescorekort
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Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

test completion rate
Reason #9

Advanced Proctoring


Learn more

About the System Design Assessment Test

Why you should use Pre-employment System Design Online Test?

The Softwaresystemdesign online test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

  • Færdighed i systemdesignkoncepter og principper
  • Evne til at designe skalerbare og distribuerede systemer
  • Kendskab til forskellige netværksprotokoller og deres implementering
  • Erfaring med databasedesign og optimeringsteknikker
  • Fortrolighed med cloud computing platforme og tjenester
  • Stærk forståelse af algoritmer og datastrukturer
  • Ekspertise inden for præstationsoptimering og tuning
  • Hands-on erfaring med mikroservices arkitektur
  • Forståelse af distribuerede systemer og deres udfordringer
  • Dybdegående viden om systemsikkerhed og beskyttelse mod trusler

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the System Design Online Test?

  • algoritme og datastrukturer

    algoritme og datastrukturer omhandler design og analyse Effektive algoritmer og organisering af data for optimal opbevaring og hentning. Færdigheder i denne færdighed er afgørende, da det forbedrer problemløsningsevner og hjælpemidler i skrivningskode, der fungerer optimalt med minimale ressourcer.

  • netværksprotokoller

    Netværksprotokoller er et sæt regler, der styrer Kommunikationen mellem enheder i et netværk. Forståelse af netværksprotokoller er vigtige for at designe systemer, der effektivt kan udveksle data, at sikre sikker og pålidelig kommunikation.

  • databasedesign

    Databasedesign er processen med at oprette en struktureret repræsentation af data og definere Forholdet mellem forskellige enheder. Det involverer at skabe effektive skemaer, der understøtter dataintegritet, forespørgsel og indeksering for optimeret opbevaring og hentning.

  • distribuerede systemer

    Distribuerede systemer består af flere sammenkoblede komponenter, der arbejder sammen for at opnå et fælles mål. Måling af færdigheder i denne færdighed er vigtig, da det sikrer forståelse for begreber som konsistens, fejltolerance og belastningsbalancering, som er grundlæggende i opbygning af skalerbare og elastiske anvendelser.

  • cloud computing

    sky Computing involverer levering af on-demand computerressourcer over internettet. Færdigheder i denne færdighed muliggør effektiv udnyttelse af skybaserede tjenester og infrastruktur, hvilket fører til skalerbarhed, omkostningsoptimering og forbedret ydeevne af applikationer.

  • præstationsoptimering

    Performance Optimization fokuserer på at forbedre Systemers hastighed og effektivitet. Færdigheder i denne færdighed hjælper med at identificere og løse flaskehalse, optimere algoritmer og eliminere overflødige operationer, hvilket fører til hurtigere udførelse og reduceret ressourceforbrug.

  • Microservices Architecture

    Microservices Arkitektur er en arkitektonisk tilgang Hvor applikationer er bygget som en samling af små, løst koblede tjenester. Færdigheder i denne færdighed muliggør skalerbarhed, fejltolerance og fleksibilitet i implementering, ændring og skalering af forskellige komponenter uafhængigt.

  • Full list of covered topics

    The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for Softwaresystemdesign online test to be based on.

    Systemdesign
    Belastning afbalancering
    Cache
    Skalerbarhed
    Databaseskærning
    Konsistensmodeller
    Distribuerede filsystemer
    Mapreduce
    CAP -sætning
    Konsensusalgoritmer
    Netværksprotokoller
    TCP/IP
    Http
    Dns
    Websockets
    Databasedesign
    Relationsdatabaser
    NoSQL -databaser
    Indeksering
    Forespørgseloptimering
    Syre -transaktioner
    Distribuerede systemer
    Meddelelseskøer
    Eventuel konsistens
    Replikation
    Fejltolerance
    Distribueret låsning
    Skyen
    Virtualisering
    Containere
    Serverløs computing
    Elasticitet
    Microservices Arkitektur
    Serviceopdagelse
    API Gateway
    Begivenhedsdrevet arkitektur
    Afbrydermønster
    Præstationsoptimering
    Belastningstest
    Profilering
    Cache -strategier
    Distribueret sporing
    Skalerbarhedstest
    Mikroservices orkestrering
    Overvågning og alarmering
    Mikroservices sikkerhed
    Algoritme og datastrukturer
    Sortering af algoritmer
    Søgningsalgoritmer
    Grafalgoritmer
    Trædatastruktur
    Hashing
    Dynamisk programmering
    Netværksstrøm
    Cloud Computing Fundamentals
    Præstationsovervågning
    Sikkerheds bedste praksis
    API -design
    Aftaler på serviceniveau
    Containeriseringsteknologier
    Kontinuerlig integration og levering
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What roles can I use the System Design Online Test for?

  • Software ingeniør
  • Systemarkitekt
  • Teknisk leder
  • Fuld stakudvikler
  • DevOps Engineer
  • Database Administrator
  • Netværksadministrator
  • Skyingeniør
  • Sikkerhedsanalytiker
  • Performance Engineer

How is the System Design Online Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

  • Solid forståelse af softwarearkitekturmønstre
  • Kapacitet til at analysere og optimere applikationsydelsen
  • Erfaring med at arbejde med store databehandlingssystemer
  • Kendskab til cache -mekanismer og strategier
  • Evne til at designe og implementere fejltolerante systemer
  • Færdighed i containerisering og orkestreringsteknologier
  • Ekspertise i design og styring af distribuerede databaser
  • Forståelse af begivenhedsdrevne og asynkrone arkitekturer
  • Evne til fejlfinding og fejlfinding af komplekse systemproblemer
  • Erfaring med at designe meget tilgængelige og skalerbare tjenester
Singapore government logo

Ansættelseslederne mente, at de gennem de tekniske spørgsmål, som de stillede under panelinterviewene, var i stand til at fortælle, hvilke kandidater der havde bedre score, og differentieret med dem, der ikke scorede så godt. De er meget tilfreds med kvaliteten af ​​de kandidater, der er nomineret med Adaface-screeningen.


85%
Reduktion i screeningstid

System Design Hiring Test Ofte stillede spørgsmål

Kan jeg kombinere flere færdigheder i en brugerdefineret vurdering?

Ja absolut. Brugerdefinerede vurderinger er oprettet baseret på din jobbeskrivelse og vil omfatte spørgsmål om alle must-have-færdigheder, du angiver.

Har du nogen anti-cheating eller proctoring-funktioner på plads?

Vi har følgende anti-cheating-funktioner på plads:

  • Ikke-gåbare spørgsmål
  • IP Proctoring
  • Webproctoring
  • Webcam Proctoring
  • Detektion af plagiering
  • Sikker browser

Læs mere om Proctoring Features.

Hvordan fortolker jeg testresultater?

Den primære ting at huske på er, at en vurdering er et elimineringsværktøj, ikke et udvælgelsesværktøj. En færdighedsvurdering er optimeret for at hjælpe dig med at eliminere kandidater, der ikke er teknisk kvalificerede til rollen, den er ikke optimeret til at hjælpe dig med at finde den bedste kandidat til rollen. Så den ideelle måde at bruge en vurdering på er at beslutte en tærskelværdi (typisk 55%, vi hjælper dig med benchmark) og inviterer alle kandidater, der scorer over tærsklen for de næste interviewrunder.

Hvilken oplevelsesniveau kan jeg bruge denne test til?

Hver Adaface -vurdering tilpasses til din jobbeskrivelse/ ideel kandidatperson (vores emneeksperter vælger de rigtige spørgsmål til din vurdering fra vores bibliotek på 10000+ spørgsmål). Denne vurdering kan tilpasses til ethvert erfaringsniveau.

Får hver kandidat de samme spørgsmål?

Ja, det gør det meget lettere for dig at sammenligne kandidater. Valgmuligheder for MCQ -spørgsmål og rækkefølgen af ​​spørgsmål randomiseres. Vi har anti-cheating/proctoring funktioner på plads. I vores virksomhedsplan har vi også muligheden for at oprette flere versioner af den samme vurdering med spørgsmål om lignende vanskelighedsniveauer.

Jeg er kandidat. Kan jeg prøve en øvelsestest?

Nej. Desværre understøtter vi ikke praksisforsøg i øjeblikket. Du kan dog bruge vores eksempler på spørgsmål til praksis.

Hvad er omkostningerne ved at bruge denne test?

Du kan tjekke vores prisplaner.

Kan jeg få en gratis prøve?

Ja, du kan tilmelde dig gratis og forhåndsvise denne test.

Jeg flyttede lige til en betalt plan. Hvordan kan jeg anmode om en brugerdefineret vurdering?

Her er en hurtig guide til hvordan man anmoder om en brugerdefineret vurdering på adaface.

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