Free Cisco 100-140 Exam Actual Questions & Explanations

Last updated on: Aug 15, 2026
Author: Jackson Young (Cisco Learning Solutions Architect)

The Cisco 100-140 exam validates the skills and knowledge required for IT support professionals pursuing the Cisco Certified Support Technician (CCST) IT Support certification. This exam is designed for candidates who provide frontline technical support, troubleshoot hardware and connectivity issues, and help resolve operating system and application problems. This landing page outlines the exam structure, core topics, and preparation strategies to help you study effectively and build confidence before test day. Whether you are new to IT support or advancing your credentials within the Cisco Certified Support Technicians program, understanding the exam scope and question types is essential for success.

100-140 Exam Syllabus & Core Topics

Use this topic map to guide your study for Cisco 100-140 (Cisco Certified Support Technician (CCST) IT Support) within the Cisco Certified Support Technicians path.

  • IT Support Job Tasks and Responsibilities: Understand the daily workflows, ticketing systems, and communication protocols that support technicians use to manage user requests and document solutions.
  • Hardware Uses: Identify common computer components, peripherals, and network devices; recognize how to diagnose hardware failures and when to escalate or replace equipment.
  • Connectivity and Resource Access Issues: Troubleshoot network connectivity problems, verify IP configuration, test DNS resolution, and restore user access to shared resources and cloud services.
  • Operating System and Application Issues: Resolve common Windows and macOS problems, manage user accounts and permissions, install updates, and support application installation and configuration.
  • Common Threats and Prevention: Recognize phishing, malware, and social engineering tactics; apply security best practices such as password management, multi-factor authentication, and patch management.
  • Job Roles: Differentiate between support tiers, understand escalation paths, and recognize when to involve specialized teams such as network or security administrators.

Question Formats & What They Test

The 100-140 exam uses multiple question types to assess both foundational knowledge and practical decision-making. Questions progress in difficulty and reflect real-world scenarios that support technicians encounter daily.

  • Multiple Choice: Test recall of definitions, feature behavior, and key terminology related to hardware, connectivity, security, and support workflows.
  • Scenario-Based Items: Present realistic support cases where you must analyze symptoms, identify root causes, and select the best troubleshooting or escalation approach.
  • Matching and Ordering: Require you to connect tools to tasks, sequence troubleshooting steps, or map symptoms to solutions.

Questions reward practical reasoning over memorization, and difficulty increases as you demonstrate mastery of foundational concepts.

Preparation Guidance

An effective study plan breaks the exam into manageable weekly topics, combines reading with hands-on practice, and includes timed mock assessments. Allocate more time to areas where you have less real-world experience, and regularly review connections between topics to build a holistic understanding of IT support workflows.

  • Map IT Support Job Tasks and Responsibilities, Hardware Uses, Connectivity and Resource Access Issues, Operating System and Application Issues, Common Threats and Prevention, and Job Roles to weekly study goals; track progress and adjust pacing as needed.
  • Work through practice question sets; review explanations for both correct and incorrect answers to identify knowledge gaps.
  • Link concepts across support scenarios: for example, understand how hardware diagnostics inform escalation decisions and how security policies affect user access troubleshooting.
  • Complete at least one timed mini mock exam under realistic conditions to build pacing confidence and reduce test-day anxiety.
  • In the final week, focus on weak topic areas and review high-level workflows rather than memorizing isolated facts.

Explore other Cisco certifications: view all Cisco exams.

Get the PDF & Practice Test

Strengthen your preparation with up-to-date resources from validexamdumps.com. These materials align to 100-140 and cover practical scenarios with clear explanations.

  • Q&A PDF with explanations: Topic-mapped questions that clarify why correct options are right and others aren't.
  • Practice Test: Realistic items, timed and untimed modes, progress tracking, and detailed review feedback.
  • Focused coverage: Aligned to IT Support Job Tasks and Responsibilities, Hardware Uses, Connectivity and Resource Access Issues, Operating System and Application Issues, Common Threats and Prevention, and Job Roles so you study what matters most.
  • Regular reviews: Content refreshes that reflect syllabus and product changes.

Visit the exam page to download the PDF, Online Practice Test or get Bundle Discount offer for both Formats: Cisco Certified Support Technician (CCST) IT Support.

Frequently Asked Questions

What topics carry the most weight on the 100-140 exam?

Connectivity and Resource Access Issues, Operating System and Application Issues, and Common Threats and Prevention typically represent larger portions of the exam. However, all six domains are important; focus on breadth first, then deepen your knowledge in areas where you lack hands-on experience.

How do IT Support Job Tasks and Connectivity Issues connect in real workflows?

Support technicians use job task frameworks to document and escalate connectivity problems systematically. Understanding ticketing workflows, communication protocols, and escalation paths helps you troubleshoot more efficiently and know when to involve network specialists rather than attempting fixes beyond your scope.

How much hands-on experience do I need before taking the exam?

Six months to one year of entry-level IT support experience is ideal but not mandatory. If you lack hands-on exposure, prioritize labs and simulations for hardware diagnostics, network troubleshooting, and OS configuration. Practice tests with scenario-based questions can also bridge knowledge gaps.

What common mistakes lead to lost points on 100-140?

Candidates often confuse similar troubleshooting steps, overlook security implications in support decisions, or rush through scenario-based items without fully reading the symptoms. Slow down on multi-step questions, re-read the scenario before selecting an answer, and always consider both technical and security aspects of a solution.

How should I structure my final week of preparation?

In your final week, take one full-length timed practice test to assess readiness and identify remaining weak areas. Spend the remaining days reviewing those specific topics, reviewing high-level workflows, and doing a final review of definitions and key concepts. Avoid cramming new material; instead, reinforce what you already know.

Question No. 1

A user needs assistance configuring Microsoft Teams so that it will start automatically.

Which category in Teams should the user select to set the application to auto-start?

Show Answer Hide Answer
Correct Answer: A

The auto-start option for Teams is found under Settings > General, where you can toggle ''Auto-start application'' to have Teams launch when you sign in.


Question No. 2

A user needs to reset their password based on feedback after a security concern.

You want to provide an example of a strong password to the user based on the following company guidelines shown:

Must have 8 to 15 characters

Must contain lowercase letters

Must contain at least 2 numbers

Must begin and end with a letter

Only special characters that can be used dash (-), underscore (_), hashtag (#), and at sign (@)

Which password could you use as an example?

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Correct Answer: D

mkn546#f is 8 characters long (within 8--15), begins with ''m'' and ends with ''f'' (letters), includes only lowercase letters, contains three numbers (5, 4, 6), and uses only the allowed special character ''#.''


Question No. 3

A user who has been on vacation for the past 30 days calls the help desk and reaches you. The user reports the following:

Before I left for vacation, I changed my password and made sure it worked. My password is not due to be reset for another 60 days, but I can't log in to the network.

While the user was gone, the company established a requirement for Multi-Factor Authentication (MFA).

Which two actions could you take to resolve the problem? (Choose two.)

Note: Each correct answer presents a complete solution.

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Correct Answer: A, C

Installing the company's authenticator app enrolls the user in MFA as now required.

Adding a phone number enables SMS-based second-factor validation.


Question No. 4

An employee is having problems reaching URLs on the World Wide Web. You examine the addressing configuration for the employee's PC that is shown as follows:

You have verified that you can open a website on the employee's PC by entering the website's IP address in their browser.

Which IP address should you ping to determine what the problem is?

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Correct Answer: D

Since you can access websites by IP but not by name, the issue lies with name resolution. Pinging the configured DNS server (192.168.1.254) will verify whether the DNS service is reachable and functioning.


Question No. 5

A user reports the following:

I recently got a prompt on my Mac to give an app permissions. I accidentally clicked Deny. Now I can't open the app.

You need to tell the user where to go to grant the necessary permissions to the application.

Which feature should they use?

Show Answer Hide Answer
Correct Answer: D

On macOS, you grant or revoke app permissions in the System Settings under ''Privacy and Security,'' where you can enable access for the denied app.