Cisco 100-140 Practice Exam Questions & Answers

6 Free Questions · Last reviewed: October 2, 2026 · Prepared & Reviewed by the ValidExamDumps Editorial Team

Exam Facts

Cisco 100-140 Exam Details

Key details for this exam, checked against the published exam outline

42 Practice Questions (Our Bank)
50 minutes Exam Duration
Variable, approximately 70% Passing Score
USD 125 Official Exam Fee
Exam Code
100-140
Full Name
Cisco Certified Support Technician (CCST) IT Support
Issuing Body
Cisco
Question Format (Our Bank)
Multiple Choice, Hotspot, Drag & Drop
Delivery
Online proctored and at Pearson VUE test centres
Eligibility
No prior certifications required
Practice Questions

Free 100-140 Practice Questions

Each question shows the correct answer and an explanation of why it is right

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ValidExamDumps Editorial Team Every question and its answer is checked by our 100-140 exam preparation team, who also write the explanation shown with each one. How we research and review these pages

An office uses a DHCP server for all computers on the network. A user calls to report problems connecting to the network. You discover that the computer has been configured with a manual IP address.

Which two possible negative effects could this have? (Choose two.)

Note: You will receive partial credit for each correct selection.

Correct Answer: A, C
Explanation

A manually assigned IP can conflict with the DHCP pool, causing another device that the DHCP server assigns the same address to lose connectivity.

If the static IP is outside the correct subnet or doesn't match the network's gateway/DNS settings, the PC may be unable to communicate on the network.

Which document outlines a commitment between an organization and a customer, including details of the service, the standards the provider must adhere to, and compensation for the successful completion of those milestones?

Correct Answer: D
Explanation

A Service Level Agreement (SLA) is the formal document that specifies the services provided, performance standards, and any penalties or compensation related to meeting those service milestones.

What is the primary purpose of implementing a Mobile Device Management (MDM) solution in an enterprise environment?

Correct Answer: A
Explanation

MDM solutions let IT enforce security policies --- such as requiring device encryption, up-to-date OS versions, PIN/passcode rules, and approved apps --- before allowing mobile devices to connect to corporate networks or access company data.

Which action must a service desk technician take to resolve a printer driver failure on a desktop PC?)

Correct Answer: C
Explanation

A printer driver failure indicates the software component that enables the OS to communicate with the printer is missing or corrupt. Updating (or reinstalling) the device driver software restores proper communication and resolves the issue.

You are a help desk technician at Healthy Eats. The company has 1000 employees in multiple locations. An end user calls you via telephone and states the following:

I am Jane Doe with the Accounting Department. I have forgotten my password, and I have a huge deadline approaching. I need you to reset my password as soon as possible so that payroll checks can be issued.

What should you do?

Correct Answer: C
Explanation

Before performing a privileged action like a password reset, you must verify the caller's identity. Calling Jane Doe's manager at a known company number ensures proper authentication.

A user calls help desk to report that they cannot connect to the company's internal WiFi network.

The help desk technician is following the problem-solving process to resolve the user's issue. After defining the problem and gathering detailed information, the technician suspects the most probable cause of the issue is a misconfiguration in the user's network settings.

What should the technician do next?

Correct Answer: D
Explanation

According to the standard troubleshooting process, after you establish a probable cause you must test that theory before implementing any changes. Checking if other users are affected helps confirm whether the issue is isolated to the one user's settings (supporting your misconfiguration theory) or is a broader network problem.

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Study Guide

What the Cisco 100-140 Exam Covers

Exam domains verified against: Official Cisco 100-140 exam guide, last checked October 2026.

Domain 1: IT Support Job Tasks and Responsibilities

Help desk technicians manage ticket queues, create clear documentation of customer interactions, and follow a structured seven-step problem-solving process. Understanding service level agreements, key performance indicators, and effective communication ensures customers receive timely support and have complete records for future reference.

Sample questions from this domain above: Q2Q5Q6

Domain 2: Hardware Issues

Technicians identify and work with desktop and laptop components including processors, RAM, storage drives, and expansion cards. Safety procedures for electrical hazards and ESD protection are essential, along with using diagnostic tools like Device Manager and understanding port types, cable standards, and proper e-waste disposal.

Sample question from this domain above: Q4

Domain 3: Connectivity and Resource Access Issues

Supporting users' network access means understanding directory services like Active Directory, setting up multifactor authentication, mapping shared drives, and verifying permissions. Troubleshooting peripheral connectivity covers printers, headsets, external drives, keyboards, mice, and other devices that depend on proper driver and connection management.

Sample questions from this domain above: Q1Q3

Domain 4: Operating System and Application issues

Technicians assist users across Windows, macOS, iOS, and Android with display settings, software updates, process termination, and cloud backup solutions. Understanding power management, boot sequences, accessibility features, and basic virtualization concepts prepares support staff to help users resolve daily operating system and application problems.

Domain 5: Common Threats and Preventions

Help desk staff recognize phishing, malware, spoofing, and social engineering attacks, often becoming targets themselves. Promoting strong password practices, running malware scans, and protecting confidential and personally identifiable information demonstrates security awareness that prevents breaches and protects the organization.

Domain 6: Job Tools

Remote support tools like Cisco Webex, Remote Desktop, and TeamViewer enable technicians to diagnose and resolve issues without visiting the user's location. Knowledge bases, search engines, technical forums, and AI-powered research tools help troubleshoot novel problems while maintaining accurate internal documentation for team reference.

FAQ

100-140 Exam FAQ

Common questions about the exam itself

Is the Cisco CCST IT Support 100-140 exam entry-level and what background do I need?
The 100-140 is designed for entry-level candidates with no prior certifications required, making it accessible to people starting careers in help desk support, IT end-user support, or computer support roles. You do not need professional IT experience, though basic familiarity with computers is helpful.
How long should I study for the Cisco 100-140 CCST IT Support exam?
Most candidates prepare in 3 to 5 weeks studying about an hour per day. The exam tests practical troubleshooting rather than pure memorization, so hands-on practice with the tools and systems covered in the objectives, plus full mock exams, matters more than duration.
What is the hardest domain on the 100-140 exam and how should I approach it?
The Hardware Issues domain challenges many candidates because it requires understanding component compatibility, port types, safety procedures, and driver management across different systems. Focus on becoming comfortable with Device Manager, identifying components within systems, and practicing safe handling procedures.
How many questions are on the 100-140 CCST IT Support exam and how much time do I have?
The exam contains 40 to 50 questions and you are given 50 minutes to complete them. This means roughly one minute per question on average, so practicing time management and efficiency with the question formats during preparation is important.
What score do I need to pass the Cisco 100-140 CCST IT Support exam?
Cisco does not publish an exact cut score, but consensus across practice platforms and study guides indicates you need approximately 70% or higher to pass. Scoring consistently at 70% on quality practice tests is a reliable indicator that you are ready for the real exam.
How long is the CCST IT Support certification valid once I pass the 100-140 exam?
Cisco does not publicly publish a validity period for the CCST IT Support certification, so you should check directly with Cisco after earning the certification or consult the official certification tracking system for current information.
How does the Cisco CCST IT Support 100-140 compare to CompTIA A+ for entry-level IT support roles?
Both are entry-level certifications for IT support roles. CompTIA A+ is broader, more widely recognized, and demanded by more employers, while CCST IT Support is shorter, cheaper at 125 USD, and proves core support skills faster. Choose CCST if you want a quick credential to launch your career, or A+ if you want wider industry recognition.
What does the exam day process look like for the Cisco CCST IT Support 100-140?
You can sit the exam online proctored or at a Pearson VUE test centre, depending on your preference. Check the Pearson VUE website to find a test centre near you, schedule your appointment, and on exam day you will log in and take a 50-minute proctored exam with 40 to 50 multiple-choice and performance-based questions.
Can I retake the Cisco 100-140 CCST IT Support exam if I fail?
Cisco allows retakes of the 100-140 exam, though specific retake policies such as waiting periods and the number of allowed attempts are best confirmed directly with Cisco or Pearson VUE when you schedule your exam or after you receive your score.
What job roles does the Cisco CCST IT Support 100-140 certification prepare me for?
The certification prepares you for entry-level roles including IT End User Support, Help Desk Support, Desktop Support Specialist, and Computer Support Specialist. It validates foundational skills in hardware troubleshooting, operating system support, connectivity, security awareness, and customer documentation.