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About the test:

The Computer Systems Architecture Test evaluates a candidate's understanding of computer system structure, organization, and behavior, including topics such as processor architecture, memory hierarchy, input/output systems, and system performance. It also assesses knowledge of data structures and software engineering principles.

Covered skills:

  • Data Structures
  • Operating System
  • Computer Networks
  • Technical Aptitude
  • System Design
  • System Design

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9 reasons why
9 reasons why

Adaface Computer Systems Architecture Assessment Test is the most accurate way to shortlist Software Engineers



Reason #1

Tests for on-the-job skills

The Computer Systems Architecture 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:

  • Understanding and implementing data structures
  • Applying technical problem-solving skills
  • Knowing the fundamentals of operating systems
  • Designing scalable and efficient systems
  • Understanding computer networks and protocols
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

These are just a small sample from our library of 10,000+ questions. The actual questions on this Computer Systems Architecture Test will be non-googleable.

🧐 Question

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?

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

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

Mac address and IP on router hop
Routers
Switches
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Refer to the following exhibit:
 image
Host A is sending a packet to Host B. 

1. What is the source and destination MAC address at point PA?
2. What is the source and destination IP address at point PB?
// Option A
PA: source MAC - Mac-A
PA: destination MAC - Mac-B
PB: source IP - 192.168.1.1
PB: destination IP - 192.168.3.1

// Option B
PA: source MAC - Mac-A
PA: destination MAC - Mac-RA
PB: source IP - 192.168.3.3
PB: destination IP - 192.168.3.1

// Option C
PA: source MAC - Mac-A
PA: destination MAC - Mac-B
PB: source IP - 192.168.3.3
PB: destination IP - 192.168.3.1

// Option D
PA: source MAC - Mac-A
PA: destination MAC - Mac-RA
PB: source IP - 192.168.1.1
PB: destination IP - 192.168.3.1

Easy

MX Record, DMARC and Email Authentication
DNS
MX Records
DMARC
SPF
DKIM
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You work as a network administrator for a company, "example.com", that recently started experiencing issues with email spoofing. To mitigate the problem, you decide to implement DMARC (Domain-based Message Authentication, Reporting & Conformance) in addition to existing SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) records.

Your current DNS records for example.com include the following:

- MX 10 mail.example.com (IP address 203.0.113.10)
- TXT "v=spf1 ip4:203.0.113.10 -all"
- TXT "v=DKIM1; k=rsa; p=public-key-here"

You add the following DMARC record:

- TXT "_dmarc.example.com" "v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]"

After implementing the DMARC record, an external mail server sends an email to your domain. The email passes the SPF and DKIM checks but fails the DMARC check.

What will likely happen to the email?
A: The email will be accepted and delivered to the recipient's inbox.
B: The email will be rejected and returned to the sender as undeliverable.
C: The email might be delivered to the recipient's spam or junk folder.
D: The email will be accepted, but a report will be sent to the sender.
E: The email will be silently discarded, and the sender will not be notified.

Medium

Remote network resources
Gateway
Routing protocols
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Review the following exhibit:
 image
Angelina noticed that the computers on 192.168.10.0/24 network can ping their default gateway. But they found that these computers cannot connect to any remote network resources. Which of the following is the most likely reason for this?

Medium

SSL Certificate Expiry
SSL/TLS
Network Security
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You are a network administrator for an e-commerce company. The company's online store allows customers to browse products and make purchases securely over the internet. The online store uses SSL/TLS for secure communication. You receive reports that some customers are seeing a security warning in their web browsers when trying to access the online store. Upon investigation, you discover the following information:

- The SSL certificate used by the online store's web server is valid for one year and is due to expire in two days.
- The web server is configured to automatically redirect HTTP traffic to HTTPS.
- The SSL certificate was issued by a trusted certificate authority (CA), and all major web browsers have the CA's root certificate in their trusted certificate stores.
- The SSL certificate includes the correct domain name for the online store.

Given the above information, which of the following steps should be taken to resolve the issue and prevent customers from seeing the security warning?
A: Extend the validity of the current SSL certificate by one year.
B: Obtain a new SSL certificate from the same CA and install it on the web server before the current certificate expires.
C: Remove the automatic redirect from HTTP to HTTPS on the web server.
D: Ask customers to ignore the security warning and proceed to the online store.
E: Replace the SSL certificate with a self-signed certificate.
🧐 Question🔧 Skill

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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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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Medium

Session stickiness with ELB
Cookies

2 mins

System Design
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Medium

Mac address and IP on router hop
Routers
Switches

2 mins

Computer Networks
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Easy

MX Record, DMARC and Email Authentication
DNS
MX Records
DMARC
SPF
DKIM

2 mins

Computer Networks
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Medium

Remote network resources
Gateway
Routing protocols

3 mins

Computer Networks
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Medium

SSL Certificate Expiry
SSL/TLS
Network Security

2 mins

Computer Networks
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🧐 Question🔧 Skill💪 Difficulty⌛ Time
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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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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Session stickiness with ELB
Cookies
System Design
Medium2 mins
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Mac address and IP on router hop
Routers
Switches
Computer Networks
Medium2 mins
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MX Record, DMARC and Email Authentication
DNS
MX Records
DMARC
SPF
DKIM
Computer Networks
Easy2 mins
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Remote network resources
Gateway
Routing protocols
Computer Networks
Medium3 mins
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SSL Certificate Expiry
SSL/TLS
Network Security
Computer Networks
Medium2 mins
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Reason #4

1200+ customers in 75 countries

customers in 75 countries
Brandon

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!


Brandon Lee, Head of People, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Computer Systems Architecture 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 Computer Systems Architecture 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

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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 Computer Systems Architecture Online Test

Why you should use Pre-employment Computer Systems Architecture Test?

The Computer Systems Architecture 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:

  • Demonstrating knowledge and proficiency in various data structures
  • Applying technical aptitude to solve complex problems
  • Understanding the fundamentals of operating systems
  • Designing efficient and scalable system architectures
  • Implementing and maintaining computer networks
  • Applying system design principles and best practices
  • Analyzing and optimizing algorithms and algorithms complexity
  • Understanding different types of data structures and their applications
  • Demonstrating knowledge of common technical aptitude concepts
  • Applying operating system concepts in problem-solving

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 Computer Systems Architecture Test?

  • Data Structures

    Data Structures are a way to organize and store data in a computer. They provide efficient methods for accessing and manipulating data, allowing algorithms to be executed more efficiently. Measuring this skill helps recruiters assess a candidate's ability to design and implement data structures, which is crucial for developing robust and efficient software applications.

  • Technical Aptitude

    Technical Aptitude refers to a candidate's overall understanding and proficiency in technical concepts and problem-solving abilities. It encompasses skills like logical reasoning, numerical analysis, and the ability to interpret and solve technical problems. Assessing this skill helps recruiters gauge a candidate's readiness and potential to handle complex technical challenges.

  • Operating System

    An Operating System is a crucial software that manages computer hardware and software resources, providing a platform for other software to run on. Measuring a candidate's knowledge of Operating Systems helps recruiters evaluate their understanding of fundamental concepts like memory management, process scheduling, and file systems, which is essential for developing robust and efficient software applications.

  • System Design

    System Design involves creating a detailed plan or architecture for implementing a computer system or software application. It includes considering factors like performance, scalability, and security. Assessing a candidate's System Design skills helps recruiters determine their ability to create efficient and reliable software solutions that meet the requirements of complex systems.

  • Computer Networks

    Computer Networks are the backbone of modern communication, enabling devices to connect and share data. Measuring a candidate's knowledge of Computer Networks allows recruiters to assess their understanding of concepts like network protocols, routing, and addressing. This skill is crucial as it helps ensure that candidates can design and administer networks effectively, ensuring reliable and secure communication.

  • 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 Computer Systems Architecture Test to be based on.

    Arrays
    Linked Lists
    Stacks
    Queues
    Trees
    Graphs
    Sorting Algorithms
    Search Algorithms
    Recursion
    Dynamic Programming
    Data Abstraction
    Exception Handling
    Memory Management
    Process Synchronization
    Deadlock Detection
    File Systems
    Virtual Memory
    System Architecture
    Relational Database Design
    Cryptography
    Network Topologies
    TCP/IP Protocol Suite
    Routing Algorithms
    Wireless Networks
    Network Security
    Load Balancing
    Fault Tolerance
    Database Normalization
    Data Modeling
    Object-Oriented Design
    API Design
    Microservices Architecture
    RESTful Services
    Message Queue
    Concurrency Control
    Distributed Systems
    Web Proxies
    Load Testing
    Packet Sniffing
    Firewalls
    DNS Protocol
    HTTP Protocol
    SSL/TLS Protocol
    IPv4 and IPv6
    DHCP Protocol
    Proxy Servers
    Software Development Life Cycle
    Agile Methodology
    Debugging Techniques
    Performance Optimization
    Code Review
    Test-Driven Development
    Continuous Integration
    Version Control
    Cloud Computing
    Big Data
    Artificial Intelligence
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What roles can I use the Computer Systems Architecture Test for?

  • Software Engineer
  • Systems Architect
  • Software Developer
  • Computer Systems Analyst
  • Technical Architect
  • Database Administrator
  • Network Engineer
  • Quality Assurance Engineer
  • IT Project Manager
  • Technical Support Specialist

How is the Computer Systems Architecture 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

  • Designing scalable and fault-tolerant systems
  • Configuring and managing computer network components
  • Analyzing system requirements and designing appropriate solutions
  • Applying data structures in practical scenarios
  • Understanding and applying technical aptitude strategies
  • Troubleshooting and maintaining operating systems
  • Designing distributed systems and microservices architectures
  • Implementing and securing computer networks
  • Demonstrating expertise in object-oriented system design
  • Understanding and applying computer network protocols
Singapore government logo

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.


85%
reduction in screening time

Computer Systems Architecture Hiring Test FAQs

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Non-googleable questions
  • IP proctoring
  • Screen proctoring
  • Web proctoring
  • Webcam proctoring
  • Plagiarism detection
  • Secure browser
  • Copy paste protection

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

What is the cost of using this test?

You can check out our pricing plans.

Can I get a free trial?

Yes, you can sign up for free and preview this test.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

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