Cisco CCST 100-150 Networking Certification Exam
Cisco Certified Support Technician Networking 100-150
The Cisco CCST 100-150 Networking certification validates entry-level knowledge of how networks operate and how to support them. The exam covers standards and concepts, addressing and subnet formats, endpoints and media types, infrastructure, diagnosing problems, and security. Candidates demonstrate knowledge of the OSI and TCP/IP models, common protocols, IPv4 and IPv6 addressing, cabling and wireless technologies, basic routing and switching, help desk troubleshooting, basic Cisco show commands, and home router wireless security. The exam consists of 50 questions over 50 minutes, with an 80% passing score.
Certification Overview
- Exam name: CCST 100-150 Networking
- Vendor: Cisco
- Exam code: 100-150
- Duration: 50 minutes
- Total questions: 50
- Passing score: 80%
Who Should Take This Exam?
IT support technician, Help desk technician, Network support technician, Junior network administrator, Field service technician, NOC technician, Desktop support specialist, Technical support engineer
Prerequisites
No formal prerequisites; basic computer literacy and introductory hands-on familiarity with Ethernet/Wi‑Fi networks, IP addressing, and common troubleshooting workflows are recommended.
Topics Covered
- Topics to be announced
Question Types
- Multiple Choice (Single Answer)
- Multiple Choice (Multiple Answers)
- Drag and Drop
- Scenario-Based
CCST 100-150 Networking Practice Questions
Our question bank contains 750+ practice questions for this certification. Sample questions from each exam chapter. Expand a question to see the answer choices. With a subscription, you get unlimited practice exams with randomized questions from our full question bank.
Standards and Concepts
Which layer of the OSI model is responsible for logical addressing and routing between different networks?
- Data Link layer
- Network layer
- Transport layer
- Session layer
In the TCP/IP model, which layer combines the functions of the OSI Physical and Data Link layers?
- Internet layer
- Transport layer
- Network Access (Link) layer
- Application layer
What is the protocol data unit (PDU) that the Data Link layer encapsulates data into?
- Segment
- Packet
- Frame
- Bit
Addressing and Subnet Formats
Which IPv4 address range is reserved for private use and not routable on the public internet?
- 192.168.0.0/16
- 8.8.8.0/24
- 203.0.113.0/24
- 1.1.1.0/24
What is the primary purpose of Network Address Translation (NAT)?
- To translate private IP addresses to a public IP address for internet access
- To encrypt traffic between hosts
- To assign MAC addresses to devices
- To resolve domain names to IP addresses
How many bits make up an IPv4 address?
- 16
- 32
- 64
- 128
Endpoints and Media Types
Which connector type is most commonly used to terminate twisted-pair copper Ethernet cables?
- RJ-11
- RJ-45
- BNC
- SC
Which connector type is typically used to terminate a traditional telephone line?
- RJ-45
- RJ-11
- LC
- F-type
Which cable type transmits data using pulses of light rather than electrical signals?
- Coaxial cable
- Twisted-pair copper cable
- Fiber optic cable
- Category 5e cable
Infrastructure
On a Cisco switch, what does a solid green link light on a port typically indicate?
- A valid, active link is established on that port
- The port is administratively disabled
- The port has a duplex mismatch
- The port has no cable connected
Which cable type is typically used to connect a laptop directly to a router or switch's console port for initial configuration?
- Console cable (rollover/USB console cable)
- Straight-through patch cable only
- Coaxial cable
- Fiber patch cable
Which port on a Cisco device is specifically used for out-of-band initial device configuration and management?
- Console port
- USB storage port
- Uplink Ethernet port
- SFP port
Diagnosing Problems
What is the primary purpose of maintaining accurate and complete documentation during network troubleshooting?
- To provide a record of the issue, actions taken, and resolution for future reference
- To automatically fix network issues
- To replace the need for any diagnostic tools
- To assign new IP addresses to devices
What file extension is commonly used to save a packet capture from Wireshark?
- .pcap
- .docx
- .json
- .log only
What is the primary purpose of using a packet analyzer such as Wireshark?
- To capture and inspect network traffic in detail
- To assign IP addresses to hosts
- To physically test cable continuity
- To configure VLANs on a switch
Security
What is the primary function of a firewall on a network?
- To filter traffic by permitting or denying access based on defined rules
- To assign IP addresses to hosts
- To resolve domain names to IP addresses
- To physically connect two switches
Which three properties together make up the CIA triad in foundational security concepts?
- Confidentiality, Integrity, and Availability
- Connectivity, Identity, and Authentication
- Capacity, Integrity, and Access
- Confidentiality, Installation, and Auditing
What does MFA (Multifactor Authentication) require a user to provide, beyond just a password?
- At least one additional independent verification factor, such as a code from a phone app
- A second password identical to the first
- Nothing additional; MFA is the same as a single password
- Only a username with no password
Frequently Asked Questions
How many questions are on the exam?
The CCST 100-150 Networking exam contains 50 questions.
What is the passing score?
You need 80% to pass.
How long is the exam?
You have 50 minutes to complete the exam.
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