Achieving your CCST certification opens doors to entry-level IT roles. The Cisco Certified Support Technician CCST credential proves you have the foundational knowledge required for network support and cybersecurity operations. Practice with the free Cisco Certified Support Technician practice test on PracticeTestGeeks (150+ questions with answer explanations).

CCST Exam at a Glance

Facts verified Oct 18, 2026 against Cisco. Dates that have passed are removed automatically.

Free Cisco Certified Support Technician Study Tools

Interactive Cisco Certified Support Technician resources on PracticeTestGeeks, free to start:

• CCST Level 1 — 11 questions with instant scoring and answer explanations
• Cisco Certified Support Technician flashcards — review key terms and concepts card by card
• Cisco Certified Support Technician study guide — topic-by-topic overview of what the exam covers
• Cisco Certified Support Technician cheat sheet — one-page printable summary for last-minute review

According to Cisco, “The number of questions on each exam varies.”^[1]

Worked examples: how to reason through CCST questions

These are practice questions written for this site, not questions from the real exam. Each explanation shows why the right answer is right and why the others are wrong.

Example 1

Question: Which statement about NTP is true?

1. A stratum 2 NTP server is directly attached to an authoritative time source.
2. NTP authentication is disabled by default.
3. NTP must be configured to synchronize with one of a handful of atomic clocks available on the internet.
4. You must configure two or more NTP sources for times to be accurate

Answer: B. NTP authentication is disabled by default.

Explanation:

The correct answer is that NTP authentication is disabled by default. A device will accept time from any configured server without checking who sent it, so an attacker who can spoof or replace a time source can shift the clock. Logs, certificates and scheduled tasks all depend on accurate time, which makes this a real security concern.

The stratum 2 option is wrong because a stratum 2 server gets its time from a server closer to the source, not directly from the authoritative clock. The atomic clock option is wrong because NTP can sync with any configured, reachable server. The last option is wrong because a single source can work; extra sources add resilience but are not required.

Rule to remember: many network services start out open and trusting, so turning on authentication is a hardening step you do deliberately.

Example 2

Question: What is Power over Ethernet (PoE) and which cable category is recommended?

1. Power over fiber; single-mode recommended
2. Power alongside data over copper Ethernet; Cat 6a recommended for high-power applications
3. Wireless power; no cable needed
4. Power over coaxial; RG-6 recommended

Answer: B. Power alongside data over copper Ethernet; Cat 6a recommended for high-power applications

Explanation:

Power over Ethernet sends DC power and data over the same copper Ethernet cable, which is why the correct choice mentions power alongside data and Cat 6a for high-power use. Better cable handles the heat from sustained power delivery more comfortably, so it is the sensible recommendation when a device draws a lot of power.

Power over fiber is wrong because fiber carries light, not electrical current, and single-mode fiber does not change that. Wireless power with no cable is wrong because PoE is a wired technology. Power over coaxial with RG-6 is wrong because that cable type is used for video and broadband, not for Ethernet power delivery.

Rule to remember: PoE needs copper twisted pair. If a question mentions fiber or coax carrying Ethernet power, the answer is almost certainly a distractor.

Example 3

Question: A support technician is examining IP packet headers and notices a significant difference between IPv4 and IPv6. Which of the following fields is present in an IPv4 header but has been removed from the main IPv6 header to improve efficiency?

1. Version
2. Source Address
3. Header Checksum
4. Hop Limit

Answer: C. Header Checksum

Explanation:

The correct answer is Header Checksum. The IPv6 header was simplified so routers have less to process at each hop. Error detection is left to the link layer and to upper-layer protocols such as TCP and UDP, so a checksum in the network header became redundant.

Version is wrong because IPv6 still carries a version field, set to identify the protocol. Source Address is wrong because every IP packet needs to say where it came from, and IPv6 keeps it, only in a longer form. Hop Limit is wrong because it replaces the IPv4 time-to-live idea and is still present, limiting how far a packet can travel.

Rule to remember: when IPv6 is compared with IPv4, look for what was removed to speed up routing, such as the checksum, rather than the core addressing and loop-prevention fields.

How to use these practice tests

Start with Cisco's official exam material so you know which topics the exam covers, then use these practice sets to find gaps. Do not start with full-length attempts. Pick a set, answer without looking anything up, and read every explanation, including for questions you got right.

Group your study by theme. For networking, work through OSI and TCP/IP models, subnetting and CIDR notation, IPv4 and IPv6 addressing and cables and connectors. For security, use security principles, common network vulnerabilities and incident handling.

Keep a short note of every question you missed, with the rule behind the right answer in your own words. Revisit weak sets after a break rather than straight away, so you test memory and not recognition.

Because the exam is timed at 50 minutes, practise answering at a steady pace in the final stretch, then try the mixed CCST level set as a check. Remember our questions are written by us and are not real exam questions.

The CCST certification cost is significantly lower than advanced certifications, making it a cost-effective way to validate your skills. Many employers may also reimburse the CCST exam cost upon passing.

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Pros and Cons at a Glance

Sample Cisco Certified Support Technician Practice Questions

Try these questions from our free Cisco Certified Support Technician practice tests. The correct answer and an explanation follow each question.

1. What is the primary difference between a vulnerability scan and a penetration test?

   • A. No difference
   • B. Scans identify known weaknesses automatically; pen tests actively exploit vulnerabilities to assess real-world risk
   • C. Pen tests are automated; scans are manual
   • D. Scans are more expensive

   Answer: B. Scans identify known weaknesses automatically; pen tests actively exploit vulnerabilities to assess real-world risk

   Vulnerability scans are automated identification; pen tests are active exploitation by skilled testers.

2. Which command-line tool sends ICMP echo requests to test basic connectivity between two hosts?

   • A. ping
   • B. traceroute
   • C. nslookup
   • D. netstat

   Answer: A. ping

   The ping command sends ICMP echo requests to a destination host to verify basic IP connectivity.

3. A company enforces a policy where employees use standard user accounts for daily tasks. When they need to install new software, they are prompted to enter administrator credentials. This practice is a direct implementation of which security principle?

   • A. Defense in Depth
   • B. Data Encryption
   • C. Security through Obscurity
   • D. Principle of Least Privilege

   Answer: D. Principle of Least Privilege

   The Principle of Least Privilege (PoLP) states that a user or process should only have the minimum level of access (privileges) necessary to perform its required functions. By using a standard account for normal work, the potential damage from a compromised account is significantly limited.

4. Which type of malware encrypts a victim's files and demands payment for the decryption key?

   • A. Trojan horse
   • B. Ransomware
   • C. Adware
   • D. Rootkit

   Answer: B. Ransomware

   Ransomware encrypts files and demands payment, typically cryptocurrency, for the decryption key.

Take the full Cisco Certified Support Technician practice test

Official CCST Resources

• Cisco Learning Network — CCST Certifications: Cisco's official hub for CCST Networking and CCST Cybersecurity exam topics, blueprints, and study materials.
• Cisco: The certifying body that issues the Cisco Certified Support Technician credential and sets its official requirements.
• Cisco Networking Academy: Official free and instructor-led courses that prepare you for the CCST exams.