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100-150 exam dumps: 295 free Cisco CCST Networking practice questions

Free 100-150 practice questions for the Cisco Certified Support Technician (CCST) Networking exam, with the correct answer and a full explanation for every option. Read the first 10 below, browse all 295 by number, or take a timed practice exam.

Question bank last updated January 2025

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Free 100-150 practice questions

Questions 1 to 10 of 295

Pick an answer before you open the explanation. Each question also has its own page with a permalink.

100-150 Question 1

Single answer

A company is designing a network for its new office and wants to ensure that devices from multiple vendors can communicate seamlessly. Which protocol or standard should the company prioritize to achieve this goal?

A
Use proprietary protocols designed by a single vendor
B
Implement standards defined by the IEEE
C
Adopt protocols from non-standardized open-source projects
D
Use protocols that rely solely on vendor-specific certifications

Show answer and explanation

Correct answer: B

Explanation

The IEEE develops globally accepted standards such as Ethernet (IEEE 802.3) and Wi-Fi (IEEE 802.11) that ensure interoperability between devices from different manufacturers. Adopting IEEE standards allows the company to avoid vendor lock-in and create a network that supports devices from multiple vendors.

A. Incorrect.
Proprietary protocols are developed by specific vendors and may not be compatible with devices from other vendors, leading to vendor lock-in.
B. Correct.
Standards defined by the IEEE (Institute of Electrical and Electronics Engineers) are widely recognized and ensure interoperability between devices from different vendors.
C. Incorrect.
While open-source projects can be valuable, relying on non-standardized protocols may lead to compatibility issues and lack of widespread support.
D. Incorrect.
Vendor-specific certifications may indicate compatibility within a vendor's ecosystem but do not guarantee seamless communication with devices from other vendors.

100-150 Question 2

Single answer

A company is setting up a new network and plans to ensure compatibility between devices from different vendors. Which standard or concept should the company prioritize to achieve this goal?

A
Proprietary protocols
B
Open standards
C
Dynamic routing protocols
D
Virtual private networks (VPN)

Show answer and explanation

Correct answer: B

Explanation

To ensure compatibility between devices from different vendors, the company should prioritize the use of open standards. These standards are widely accepted and designed to promote interoperability, making them an essential consideration for building networks with multi-vendor environments.

A. Incorrect.
Proprietary protocols are created and controlled by a single vendor, which can lead to compatibility issues with devices from other vendors. This does not align with the company's goal.
B. Correct.
Open standards are publicly available and ensure interoperability between devices from different vendors. This directly addresses the company's requirement for compatibility.
C. Incorrect.
Dynamic routing protocols are used for routing updates and efficient data flow within a network, but they do not directly address the compatibility of devices from different vendors.
D. Incorrect.
Virtual private networks (VPN) are used to create secure connections over public networks, but they are unrelated to the concept of ensuring device compatibility.

100-150 Question 3

Single answer

A network administrator is tasked with ensuring that devices from different vendors can communicate seamlessly within the organization's LAN. Which networking standard or concept should the administrator prioritize to achieve this goal?

A
Utilizing proprietary protocols designed by the vendor
B
Implementing open standards like IEEE 802.3 for Ethernet
C
Relying on vendor-specific hardware for compatibility
D
Restricting the network to devices from a single vendor

Show answer and explanation

Correct answer: B

Explanation

Open standards, such as IEEE 802.3 for Ethernet, are essential in networking to ensure interoperability between devices from multiple vendors. By adopting open standards, organizations can avoid vendor lock-in and enable seamless communication in multi-vendor environments. Proprietary protocols and vendor-specific solutions may limit compatibility and are not suitable for achieving the stated goal.

A. Incorrect.
Proprietary protocols are limited to specific vendors and may not ensure interoperability between devices from different manufacturers.
B. Correct.
Open standards, such as IEEE 802.3 for Ethernet, are designed to enable interoperability between devices from multiple vendors, making them essential for multi-vendor environments.
C. Incorrect.
Vendor-specific hardware can ensure compatibility within the same vendor ecosystem but does not address interoperability with devices from other vendors.
D. Incorrect.
Restricting the network to a single vendor may ensure compatibility, but it leads to vendor lock-in and does not align with the goal of multi-vendor communication.

100-150 Question 4

Single answer

A network engineer is tasked with ensuring that all devices in a new office can communicate over the LAN and adhere to a universal set of communication rules. The engineer decides to implement a standard for Ethernet communication. Which standard should the engineer follow to ensure compatibility across devices?

A
IEEE 802.11
B
IEEE 802.3
C
IEEE 802.15
D
IEEE 802.1X

Show answer and explanation

Correct answer: B

Explanation

The IEEE 802.3 standard defines Ethernet communication, which is the most commonly used standard for wired Local Area Networks (LANs). It ensures compatibility between devices by providing a set of rules for data transmission over wired connections. In this scenario, the network engineer needs to implement IEEE 802.3 to ensure proper communication over the LAN.

A. Incorrect.
IEEE 802.11 is the standard for wireless LAN (Wi-Fi) communication, not Ethernet.
B. Correct.
IEEE 802.3 is the standard for Ethernet communication, defining how devices communicate over wired LANs.
C. Incorrect.
IEEE 802.15 is the standard for Personal Area Networks (PANs), such as Bluetooth, not Ethernet communication.
D. Incorrect.
IEEE 802.1X is a standard for network access control, focusing on authentication mechanisms, not Ethernet communication.

100-150 Question 5

Single answer

A network administrator is setting up a new network and needs to ensure that devices from different manufacturers can communicate seamlessly. Which standard or concept should the administrator prioritize to achieve this goal?

A
Proprietary Protocols
B
Open Standards
C
Network Address Translation (NAT)
D
Quality of Service (QoS)

Show answer and explanation

Correct answer: B

Explanation

Open standards are essential for ensuring that devices from different manufacturers can communicate effectively. They provide a set of agreed-upon rules and protocols that allow diverse hardware and software to work together seamlessly. This is critical in environments where devices from multiple vendors are used.

A. Incorrect.
Proprietary protocols are developed by specific vendors and are not designed for interoperability with devices from other manufacturers. Using proprietary protocols can create compatibility issues.
B. Correct.
Open standards are designed to ensure interoperability between devices, regardless of the manufacturer. Prioritizing open standards is critical for seamless communication in a multi-vendor environment.
C. Incorrect.
Network Address Translation (NAT) is used for modifying IP addresses in a network, but it is unrelated to the concept of interoperability between devices.
D. Incorrect.
Quality of Service (QoS) is a mechanism to prioritize network traffic, but it does not address the need for interoperability between devices from different manufacturers.

100-150 Question 6

Select 3

A company is setting up a new office and needs to establish a functional network for employees to connect to the internet and share resources. As a Cisco Certified Support Technician, you are tasked with identifying the fundamental conceptual building blocks required to design this network. Which of the following components are essential for creating a basic network?

A
Endpoints like computers, laptops, or smartphones
B
Switches to connect devices within the local network
C
Routers to interconnect different networks and provide internet access
D
Fiber optic cables only, as they are mandatory for all connectivity
E
A centralized cloud service for file storage

Show answer and explanation

Correct answers: A, B, C

Explanation

The fundamental building blocks of a network include endpoints (devices that connect to and use the network), switches (to interconnect devices within a local network), and routers (to connect different networks and provide access to external networks like the internet). Fiber optic cables and cloud services, while beneficial, are not mandatory or fundamental components of network design.

A. Correct.
Endpoints are critical as they represent the devices that users interact with to access the network, share resources, and connect to the internet.
B. Correct.
Switches are essential for connecting multiple devices within the same local network and ensuring proper communication between them.
C. Correct.
Routers are necessary to connect the local network to other networks, such as the internet, and to manage traffic between networks.
D. Incorrect.
While fiber optic cables are a high-performance option for connectivity, they are not mandatory. Other media like Ethernet cables or wireless technologies can also be used.
E. Incorrect.
While cloud services are useful, they are not a fundamental building block of a network. Networks can exist without centralized cloud services.

100-150 Question 7

Select 3

A small business is setting up its first network and needs to ensure all devices can communicate with each other. Which fundamental building blocks of a network must be implemented to enable communication between devices?

A
End devices such as computers and printers
B
Intermediary devices like switches and routers
C
Network protocols such as TCP/IP
D
Firewall rules for enhanced security
E
Cloud storage for data backup

Show answer and explanation

Correct answers: A, B, C

Explanation

To establish a functioning network, the essential building blocks include end devices (which generate and receive data), intermediary devices (which forward and manage data flow), and network protocols (which define communication standards). These components ensure that devices can connect and exchange information effectively. Security measures like firewalls and additional features like cloud storage are important but not fundamental for basic network communication.

A. Correct.
End devices, such as computers and printers, are critical components of a network as they send and receive data. Without them, communication cannot occur.
B. Correct.
Intermediary devices, like switches and routers, are required to connect the end devices and manage traffic between them. They are fundamental for enabling communication in a network.
C. Correct.
Network protocols, such as TCP/IP, define the rules and standards for communication between devices. They are essential for ensuring devices understand and process data correctly.
D. Incorrect.
While firewall rules enhance security, they are not a fundamental building block required for basic communication between devices in a network.
E. Incorrect.
Cloud storage is not a fundamental building block of a network. It is an additional feature for data storage and backup, but it does not directly enable device communication.

100-150 Question 8

Select 4

You are troubleshooting a small office network and need to explain the fundamental conceptual building blocks of networks to a colleague. Which of the following are considered essential components of a network?

A
End devices such as computers and printers
B
Switches and routers for data forwarding
C
Applications such as email and web browsers
D
Media such as cables or wireless signals
E
Protocols such as TCP/IP for communication

Show answer and explanation

Correct answers: A, B, D, E

Explanation

The fundamental conceptual building blocks of a network include end devices (to send and receive data), networking devices like switches and routers (to forward and manage traffic), media (to physically or wirelessly connect devices), and protocols (to define communication rules). Applications, while important, are not fundamental parts of the network itself as they operate at higher levels and rely on the underlying network infrastructure.

A. Correct.
End devices like computers, printers, and phones are crucial components of a network because they generate or receive network traffic.
B. Correct.
Switches and routers are essential for forwarding data packets within and between networks, making them critical building blocks.
C. Incorrect.
Applications like email and web browsers are not fundamental building blocks of a network; they operate on top of the network and rely on its infrastructure to function.
D. Correct.
Media, such as Ethernet cables or wireless signals, provide the physical or wireless pathways for data transfer, making them essential network components.
E. Correct.
Protocols like TCP/IP define the rules for communication between devices, ensuring interoperability and data transfer, which makes them a core part of networks.

100-150 Question 9

Select 3

A company is expanding its network to connect multiple branch offices. To ensure smooth communication between devices, they need to identify the fundamental building blocks of their network. Which of the following are considered key conceptual building blocks of a network?

A
Endpoints, such as computers and smartphones
B
Networking devices, such as routers and switches
C
Applications, such as email clients or web browsers
D
Protocols, such as TCP/IP and HTTP
E
Cloud-based services, such as SaaS platforms

Show answer and explanation

Correct answers: A, B, D

Explanation

The fundamental conceptual building blocks of a network include endpoints (the devices that connect to the network), networking devices (such as routers and switches that facilitate data transfer), and protocols (which establish communication rules). Applications and cloud-based services, while important for specific functionalities, operate on top of the network infrastructure and are not core building blocks.

A. Correct.
Endpoints are fundamental building blocks of a network as they are the devices that exchange data across the network.
B. Correct.
Networking devices like routers and switches are essential for enabling communication and organizing network traffic.
C. Incorrect.
While applications are important for end-user functionality, they are not considered fundamental building blocks of a network itself.
D. Correct.
Protocols define the rules and standards for data exchange, making them crucial for communication between devices in a network.
E. Incorrect.
Cloud-based services are useful for hosting and accessing applications, but they are not fundamental building blocks of a network.

100-150 Question 10

Select 3

A small business is setting up a new network and wants to understand the fundamental building blocks required for proper connectivity and communication. Which of the following are essential conceptual components of a network?

A
Devices such as routers, switches, and end devices
B
Protocols like TCP/IP for communication
C
A cloud-based antivirus solution
D
Media such as cables or wireless signals for data transmission
E
Power backup systems for network devices

Show answer and explanation

Correct answers: A, B, D

Explanation

The fundamental building blocks of a network include devices (e.g., routers, switches, and end devices), protocols (e.g., TCP/IP), and media (e.g., cables or wireless signals). These components are vital for enabling connectivity and communication. Other elements, such as security solutions and power backups, enhance the network but are not considered foundational.

A. Correct.
Devices such as routers, switches, and end devices are fundamental to a network because they enable connectivity, data forwarding, and interaction between users and systems.
B. Correct.
Protocols like TCP/IP are essential for defining how data is formatted, addressed, transmitted, and received across the network. Without protocols, communication between devices would not be possible.
C. Incorrect.
A cloud-based antivirus solution is a security feature, not a fundamental building block of a network. It is used to protect data and systems but is not required for basic network functionality.
D. Correct.
Media, such as cables (Ethernet) or wireless signals (Wi-Fi), is necessary for transmitting data between devices. Without a medium, data cannot travel across the network.
E. Incorrect.
Power backup systems are useful for ensuring continuity during outages but are not necessary for the basic functioning of a network. They are a complementary feature rather than a building block.

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100-150 exam dumps FAQ

Are these 100-150 dumps real exam questions?

No. These are original practice questions written to the Cisco Certified Support Technician (CCST) Networking exam objectives, not questions copied from a live exam. Memorising leaked questions violates Cisco's candidate agreement and stops working the moment the question pool rotates. Use this bank to check your understanding of each domain and to find the topics you still need to study.

How many 100-150 practice questions are there?

295 questions, each with the correct answer, an explanation of the answer, and a note on why every other option is wrong. The first 10 are on this page and every question has its own page linked below.

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Yes. Every question, answer and explanation on this page and the linked question pages is free to read without an account. A free HydraNode account adds timed practice exams, scoring and progress tracking across attempts.

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Sign in and start the Cisco Certified Support Technician (CCST) Networking exam on HydraNode. A session gives you 75 questions drawn from this bank in 120 minutes, then a score report with a per-question review.