Thursday, December 12, 2024

Comparison of Virtual Network Simulators for CCST and CCNA Preparation

Comparison of Cert-Ex CCNA NetSim, GNS3, and Packet Tracer, three popular network simulation tools: 

1. Cert-Ex CCNA NetSim

  • Purpose: Focused on CCNA exam preparation with pre-designed labs and exercises.
  • Features:
    • Includes over 100 lab exercises aligned with CCNA objectives.
    • Simulates Cisco routers and switches with a user-friendly interface.
    • Built-in help and lab manuals for guided learning.
    • Suitable for beginners or those looking for structured, exam-oriented training.
  • Strengths:
    • Simplifies learning by focusing on CCNA topics.
    • No requirement for external configurations or real IOS images.
  • Limitations:
    • Less flexible for custom topologies compared to GNS3.
    • Focused on Cisco devices, limiting use beyond CCNA-level knowledge.
  • Target Audience: CCNA aspirants and networking beginners.

2. GNS3 (Graphical Network Simulator 3)

  • Purpose: Advanced network emulation for realistic lab environments.
  • Features:
    • Integrates with real Cisco IOS images for highly accurate simulations.
    • Supports complex, multi-vendor network designs and virtual machine integration.
    • Includes both virtual and physical device connections.
  • Strengths:
    • Highly flexible and customizable for enterprise-grade network scenarios.
    • Open-source and community-supported.
  • Limitations:
    • Requires Cisco IOS images (license needed for legal use).
    • Steeper learning curve for beginners.
    • Demands significant computing resources.
  • Target Audience: Advanced learners, network engineers, and professionals designing real-world networks.

3. Packet Tracer

  • Purpose: Cisco's official simulation tool for learning and certification.
  • Features:
    • Simulates Cisco network devices and configurations.
    • Offers a user-friendly drag-and-drop interface for creating network topologies.
    • Supports IoT and basic Python scripting.
  • Strengths:
    • Lightweight and beginner-friendly.
    • Free for students and Cisco Networking Academy members.
    • Pre-built labs and scenarios tailored for Cisco certifications.
  • Limitations:
    • Limited to Cisco technologies; lacks multi-vendor support.
    • Some advanced features available in real devices may not be supported.
  • Target Audience: Students, entry-level learners, and Cisco certification candidates.

Comparison Table

Feature Cert-Ex CCNA NetSim GNS3 Packet Tracer
Ease of Use Beginner-friendly Advanced (steep learning curve) Beginner-friendly
Flexibility Limited Highly flexible Moderate
Device Support Cisco only (simulated) Multi-vendor (requires IOS images) Cisco only (emulated)
Resources Needed Low High Low
Pre-Built Labs Yes (focused on CCNA) No No
Best For CCNA aspirants Network professionals Students and beginners

Recommendation

  • Cert-Ex CCNA NetSim: For focused CCNA exam preparation.
  • GNS3: For advanced users and real-world enterprise network simulations.
  • Packet Tracer: For beginners learning Cisco technologies or preparing for Cisco certifications.

Cisco Certified Support Technician - Networking Exam Sim

Cert-Ex offers a comprehensive practice test for the Cisco Certified SupportTechnician (CCST) Networking exam. It provides a realistic exam simulation, including various question types like multiple-choice, simulation, and drag-and-drop.

Key Features of Cert-Ex CCST Networking Practice Tests:

  • Realistic Exam Simulation: The practice tests are designed to mimic the actual exam environment, helping you get accustomed to the format and time constraints.

  • Comprehensive Question Bank: The question bank covers a wide range of topics, including networking fundamentals, troubleshooting, security, and more.

  • Detailed Explanations: Each question comes with a detailed explanation, helping you understand the correct answer and the underlying concepts.

  • Performance Tracking: The platform tracks your performance, highlighting areas where you need to focus on improvement.

  • Practice Mode and Exam Mode: You can practice questions in both modes to simulate different exam scenarios.

  • Flexible Learning: Access the practice tests from any device with an internet connection.

By using Cert-Ex practice tests, you can effectively prepare for the CCST Networking exam, identify your strengths and weaknesses, and increase your chances of success.

Remember: While practice tests are a valuable tool, hands-on experience and practical knowledge are equally important. Consider working on real-world network scenarios or using network simulators to reinforce your learning.

CCST Networking Exam Topics

The CCST Networking exam covers a broad range of networking fundamentals, including:

1. Standards and Concepts

  • Basic networking concepts (OSI model, TCP/IP model)

  • Network topologies (bus, star, ring, mesh)

  • Networking devices (switches, routers, hubs, modems)

  • Network protocols (TCP/IP, HTTP, FTP, SMTP, DNS)

  • Network addressing (IP addressing, subnetting, routing protocols)

2. Addressing and Subnet Formats

  • IP addressing (IPv4 and IPv6)

  • Subnetting

  • Classful and classless addressing

  • NAT (Network Address Translation)

  • CIDR (Classless Inter-Domain Routing)

3. Endpoints and Media Types

  • Network cables (CAT5e, CAT6, fiber optic)

  • Network connectors (RJ-45, RJ-11)

  • Wireless technologies (Wi-Fi standards, 802.11x)

  • Network devices (PCs, laptops, servers, printers)

4. Infrastructure

  • Network topologies

  • Network devices (switches, routers, hubs, modems)

  • Network protocols (TCP/IP, HTTP, FTP, SMTP, DNS)

  • Network addressing (IP addressing, subnetting, routing protocols)

  • VLANs (Virtual Local Area Networks)

  • Network security (firewalls, intrusion detection systems, access control lists)

5. Diagnosing Problems

  • Basic troubleshooting techniques (ping, traceroute, telnet, SSH)

  • Common network problems (connectivity issues, performance problems, security breaches)

  • Network monitoring tools (SNMP, RMON)

  • Log analysis

6. Security

  • Network security threats (viruses, worms, phishing, DDoS attacks)

  • Security best practices (strong passwords, encryption, regular security audits)

  • Network security devices (firewalls, intrusion detection systems, intrusion prevention systems)

By understanding these topics, you can effectively prepare for the CCST Networking exam and demonstrate your knowledge of networking fundamentals.

CCST Networking FAQs

Fundamental Concepts

  1. What is the OSI model and its layers? The OSI model is a conceptual framework used to describe the functions of a networking system. It consists of seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.  

  2. What is the difference between a switch and a router? A switch operates at the Data Link layer and forwards frames based on MAC addresses within a network. A router operates at the Network layer and forwards packets based on IP addresses between different networks.  

  3. What is TCP/IP? TCP/IP is a suite of protocols that provides communication between devices on the Internet. It consists of two main layers: the Internet layer (IP) and the Transport layer (TCP and UDP). 

Network Addressing and Subnetting

  1. What is IP addressing? IP addressing is a system used to assign unique addresses to devices on a network. It consists of two main versions: IPv4 and IPv6. 

  2. What is subnetting? Subnetting is the process of dividing a network into smaller subnetworks. It helps to improve network efficiency and security.  

Network Devices and Technologies

  1. What is a VLAN? A VLAN is a logical grouping of devices on a network, allowing them to communicate as if they were on a separate physical network.  

     
  2. What is Wi-Fi? Wi-Fi is a wireless networking technology that allows devices to communicate over short distances using radio waves.  

     
  3. What is a firewall? A firewall is a network security device that monitors incoming and outgoing network traffic and denies or permits passage based on a defined set of security rules.  

Network Troubleshooting

  1. What is the ping command used for? The ping command is used to test network connectivity between two devices by sending and receiving ICMP echo requests and replies.  

  2. What is the traceroute command used for? The traceroute command is used to trace the path that packets take from a source to a destination, identifying intermediate hops. 

By understanding these fundamental concepts, you can effectively prepare for the CCST Networking exam.

MCQs on CCST Networking Topics

Question 1:

Which network topology provides the highest level of redundancy?

  • A. Star topology

  • B. Mesh topology

  • C. Ring topology

  • D. Bus topology

Answer: B. Mesh topology

Explanation: A mesh topology provides redundancy by having multiple connections between devices. This means that if one link fails, there are alternative paths for data to flow, ensuring network reliability.

Question 2:

What is the primary function of a router?

  • A. To amplify network signals

  • B. To connect devices within a local network

  • C. To forward data packets between different networks

  • D. To provide wireless connectivity

Answer: C. To forward data packets between different networks

Explanation: Routers operate at the Network layer of the OSI model and are responsible for routing packets between different networks based on their IP addresses.

Question 3:

Which network protocol is used for transferring files between computers?

  • A. HTTP

  • B. FTP

  • C. SMTP

  • D. DNS

Answer: B. FTP

Explanation: FTP (File Transfer Protocol) is a standard network protocol used to transfer computer files between a client and a server on a computer network.

Checkout other Cisco Tests

Tuesday, November 26, 2024

CCNP Enterprise Exams – ENCOR and ENARSI Exam Cram and Practice Tests

 The CCNP Enterprise Certification by Cisco is a prestigious credential for networking professionals looking to advance their expertise in enterprise networking. To earn this certification, candidates need to pass two exams: the Implementing Cisco Enterprise Network Core Technologies (ENCOR 350-401) and the Implementing Cisco Enterprise Advanced Routing and Services (ENARSI 300-410). Together, these exams validate your ability to plan, deploy, and manage enterprise networks while preparing you for specialized roles in routing, security, or SD-WAN.

This blog delves into these two exams, covering their objectives, content, and preparation strategies to help you on your journey to CCNP Enterprise certification.

CCNP ENCOR (350-401): The Core of Enterprise Networking

The ENCOR 350-401 exam focuses on foundational enterprise networking concepts. Passing this exam is not only a requirement for CCNP Enterprise certification but also serves as the core exam for other Cisco certifications, such as CCIE Enterprise Infrastructure and Wireless.

Key Topics Covered in CCNP ENCOR:

  1. Architecture: Network design principles, SD-WAN, and cloud solutions.
  2. Virtualization: Virtual network functions and virtualization technologies like VRF and VXLAN.
  3. Infrastructure: Layer 2 and Layer 3 switching, wireless networks, and Quality of Service (QoS).
  4. Network Assurance: Tools like DNA Center and Cisco SD-Access for automation and monitoring.
  5. Security: TrustSec, AAA (Authentication, Authorization, and Accounting), and securing network devices.
  6. Automation: Programming concepts, APIs, and Cisco platforms for network automation.

Check out detailed CCNP ENCOR Cram Notes for a focused study guide: ENCOR Cram Notes.

Exam Details:

  • Duration: 120 minutes
  • Question Types: Multiple-choice, drag-and-drop, and simulation-based
  • More information: CCNP ENCOR Exam Overview

CCNP ENARSI (300-410): Master Advanced Routing and Services

Once you pass the ENCOR exam, the next step is to pass the ENARSI 300-410 exam. This exam dives deeper into advanced routing and troubleshooting, equipping candidates with the skills needed for roles focused on network infrastructure and troubleshooting.

Key Topics Covered in CCNP ENARSI:

  1. Layer 3 Routing: Advanced configuration of EIGRP, OSPF, and BGP protocols.
  2. VPN Technologies: DMVPN, MPLS Layer 3 VPNs, and site-to-site VPNs.
  3. Infrastructure Security: Device security, control plane policing, and router hardening.
  4. Infrastructure Services: QoS, Network Address Translation (NAT), and DHCP.
  5. Troubleshooting: Tools and methodologies for identifying and resolving routing and network issues.

Get detailed CCNP ENARSI Cram Notes for focused preparation: ENARSI Cram Notes.

Exam Details:

  • Duration: 90 minutes
  • Question Types: Similar to ENCOR – multiple-choice, simulations, and drag-and-drop questions
  • More information: CCNP ENARSI Exam Overview

Why Earn the CCNP Enterprise Certification?

  1. Professional Growth: This certification is recognized globally and highlights your expertise in enterprise networking.
  2. Career Opportunities: Opens doors to advanced networking roles like Enterprise Network Engineer, Solutions Architect, and Network Consultant.
  3. Foundation for CCIE: The ENCOR exam acts as the qualifying exam for the CCIE Enterprise certification.

How to Prepare for CCNP Enterprise Certification

  1. Start with ENCOR: Begin your journey with the foundational topics covered in the ENCOR exam, as they build the groundwork for advanced topics in ENARSI. Use resources like simulation labs, cram notes, and mock tests to get comfortable with concepts.

  2. Focus on ENARSI: Once you've passed ENCOR, dive into advanced routing concepts with ENARSI. Pay special attention to VPNs, BGP troubleshooting, and MPLS, as these are common in enterprise networks.

  3. Leverage Practice Tools: Platforms like Simulation Exams offer realistic practice tests and simulators that mimic the actual exam environment.

  4. Utilize Study Guides: Cram notes provide concise and targeted material, helping you review and reinforce key concepts.

Summary

The CCNP Enterprise Certification is a career-defining credential for networking professionals. The ENCOR 350-401 exam establishes a strong foundation in enterprise networking, while the ENARSI 300-410 focuses on advanced routing and troubleshooting. With the right preparation tools, such as practice exams, cram notes, and hands-on labs, you can confidently pass these exams and elevate your networking career.

For more information, explore these resources:

 

Saturday, November 16, 2024

Cert-Ex CCNA Practice Tests: Promote Your Network Engineering Skills

Are you aiming to achieve the Cisco Certified Network Associate (CCNA) certification exam?  Cert-Ex CCNA Practice Tests are designed to equip you with the knowledge and skills necessary to excel in your network engineering career.

Why Choose Cert-Ex CCNA Practice Tests?

  • Real-World Scenarios: Our practice tests simulate real-world networking scenarios, allowing you to apply your knowledge in a practical setting.
  • Comprehensive Coverage: We cover a wide range of CCNA exam topics, including routing, switching, IPv4, IPv6, network security, and more.
  • Detailed Explanations: Each question comes with a detailed explanation, helping you understand the underlying concepts and rationale.
  • Performance Tracking: Monitor your progress with detailed performance reports, highlighting your strengths and weaknesses.
  • Flexible Learning: Access our practice tests anytime, anywhere, on any device.

Key Features of Cert-Ex CCNA Practice Tests:

  • Realistic Exam Simulation: Experience the pressure of a real exam with timed tests and a similar interface.
  • Adaptive Question Difficulty: As you progress, the difficulty level of questions adjusts to match your skill level.
  • Performance Analytics: Gain insights into your performance with detailed score reports and performance trends.
  • Expert-Created Content: Our practice tests are developed by industry experts who understand the nuances of the CCNA exam.

How to Prepare Effectively with Cert-Ex CCNA Practice Tests:

  1. Understand the Exam Objectives: Familiarize yourself with the official CCNA exam blueprint to identify key topics.
  2. Study the Core Concepts: Gain a solid understanding of networking fundamentals, including TCP/IP, subnetting, routing protocols, and switching technologies.
  3. Practice Regularly: Dedicate time to practice regularly with Cert-Ex CCNA Practice Tests to reinforce your learning.
  4. Review and Analyze: After each practice test, review the correct answers and explanations to identify areas for improvement.
  5. Seek Clarification: If you encounter any difficulties, don't hesitate to seek clarification from experts or online forums.

Elevate Your Career with CCNA Certification

By successfully passing the CCNA exam, you can open doors to exciting career opportunities in network engineering. With Cert-Ex CCNA Practice Tests, you'll be well-prepared to tackle the challenges of the exam and achieve your certification goals.

Start your journey to CCNA success today!

Keywords: CCNA, Cisco Certified Network Associate, network engineering, practice tests, certification exam, study guide, networking fundamentals, TCP/IP, subnetting, routing protocols, switching technologies, IPv4, IPv6, network security, exam preparation, online learning, career advancement, IT certification, technical skills, professional development, study tips, learning resources, exam tips, practice questions, exam strategies, study plan, certification training, IT training, online courses, exam simulator, test prep, study materials, exam review, certification guide, IT certification exam, networking certification, IT certification training, IT professional, network administrator, network engineer, IT career, technology career, IT job market, IT industry trends, IT skills, IT certification exam tips, IT certification exam preparation, IT certification study guide, IT certification practice tests, IT certification online courses, IT certification training courses, IT certification exam review, IT certification exam simulator

References:

CCNA Exam Notes

CCNA Study Guide

CCNA Questions

 

Monday, May 13, 2024

Unlocking Career Potential: The Significance of CCNA Certification

In today's hyper-connected world, where networks are the backbone of virtually every industry, individuals seeking to carve a successful career path in IT must equip themselves with the right certifications. Among the most coveted certifications in the networking realm is the Cisco Certified Network Associate (CCNA) certification. Let's delve into the significance of CCNA certification and how CCNA practice tests can pave the way to success.

CCNA certification validates an individual's ability to install, configure, operate, and troubleshoot small to medium-sized networks. It serves as a testament to one's proficiency in networking fundamentals, making it a valuable asset for both aspiring and seasoned IT professionals. With CCNA certification, professionals gain the knowledge and skills necessary to excel in roles such as network administrator, network engineer, or systems engineer.

One of the key components of preparing for CCNA certification is rigorous practice. CCNA practice tests play a pivotal role in helping candidates assess their understanding of networking concepts, identify areas of improvement, and build confidence for the actual exam. These practice tests simulate the exam environment, enabling candidates to familiarize themselves with the format and types of questions they may encounter.

By incorporating CCNA practice tests into their study regimen, candidates can refine their problem-solving abilities, enhance their time management skills, and reinforce their grasp of critical networking concepts. Moreover, practice tests provide invaluable feedback, allowing candidates to gauge their readiness for the exam and adjust their study plans accordingly.

In addition to aiding in exam preparation, CCNA certification opens doors to a myriad of career opportunities. Employers across various industries value CCNA-certified professionals for their expertise in designing and managing networks, making them highly sought after in today's job market. Whether you're looking to advance your career or break into the field of networking, CCNA certification can serve as a catalyst for success.

In conclusion, CCNA certification holds immense significance for individuals looking to establish themselves in the field of networking. Through diligent preparation and utilization of CCNA practice tests, aspiring professionals can embark on a journey towards unlocking their full career potential in the dynamic world of IT networking.

Sunday, March 24, 2024

Certification Path to Computer Technician Career

 

The best certifications for a computer technician role depend on what area you want to focus on, but given below are the top 3 that provide a strong foundation:

  1. CompTIA A+ - This is the go-to certification for entry-level IT support technicians. It covers a wide range of fundamentals, making you well-versed in hardware, software, networking, and security.

  2. Network+ - If you're interested in networking, this certification validates your ability to install, configure, troubleshoot, and maintain wired and wireless networks.

  3. Security+ - This certification strengthens your resume for security-focused roles. It covers risk management, incident response, secure network design, and various security threats.

These certifications are vendor-neutral, meaning they apply to a broad range of technologies, making you a more versatile technician.

The above are explained in greater detail in the following sections.

    CompTIA Aplus Certification:

    The CompTIA A+ is the industry standard certification for entry-level IT service support technicians. It validates your competency in installing, maintaining, troubleshooting, and configuring computer hardware and operating systems. The certificate can be achieved by completing A+ Core1 and A+ Core2.

Topics covered: The A+ covers a wide range of IT fundamentals, including:

    1. Hardware - motherboards, processors, memory, storage, and peripherals

    2. Networking - basic networking concepts, network topologies, protocols, and troubleshooting

    3. Operating systems - installation, configuration, and troubleshooting of Windows and other operating systems

    4. Security - security threats, security solutions, and best practices

    5. Soft skills - communication, customer service, and professionalism

Exam preparation resources:

CompTIA offers a variety of resources to help you prepare for the A+ exams, including A+ study guide, A+ practice exams, A+ training courses. You can also avail of the A+ practice exams, Labsims and Aplus exam guides from online third party vendors.

Summary:The CompTIA A+ is a great starting point for anyone interested in a career in IT support. It is a vendor-neutral certification, which means that it is not specific to any one manufacturer's products. This makes it a valuable credential for technicians who want to work on a variety of different computer systems.

Network Plus Certification:

The CompTIA Network+ certification validates your ability to install, configure, troubleshoot, and maintain wired and wireless networks. It is a vendor-neutral certification that covers a variety of networking technologies and protocols.

Topics covered:

The Network+ covers a wide range of networking topics, including:

    1. Networking fundamentals - concepts like network topologies, protocols, and devices

    2. Network implementation - installing and configuring network devices

    3. Network operation - managing and troubleshooting networks

    4. Network security - securing networks from threats

Exam preparation resources: CompTIA offers a variety of resources to help you prepare for the Network+ exams, including Network+ study guides, Network+ practice exams, and Network+ training courses. There are several third party vendors that offer Network+ practice tests and study guides.

Summary:The CompTIA Network+ is a valuable certification for IT professionals who want to work in networking or network support roles. It is a vendor-neutral certification, which means that it is not specific to any one manufacturer's products. This makes it a valuable credential for technicians who want to work on a variety of different networks.

Security Plus Certification:

    The CompTIA Security+ certification validates your ability to assess and secure IT systems. It covers a wide range of security topics, including risk management, incident response, and secure network design.

Topics covered:The Security+ covers a wide range of security topics, including:

    1. Network security - firewalls, intrusion detection systems, and other security controls

    2. Host security - antivirus software, application security, and data encryption

    3. Access control - user accounts, passwords, and other access control mechanisms

    4. Security threats - viruses, malware, phishing attacks, and other security threats

    5. Risk management - identifying, assessing, and mitigating security risks

    6. Exam preparation resources: CompTIA offers a variety of resources to help you prepare for the Security+ exams, including study guides, practice exams and training courses. Third party vendors also provide Security+ exams and other free online Security+ notes.

Summary: The CompTIA Security+ is a valuable certification for IT professionals who want to work in security roles. It is a vendor-neutral certification, which means that it is not specific to any one manufacturer's products. This makes it a valuable credential for technicians who want to work in a variety of different security environments.

Some additional factors to consider when choosing a certification:

  1. Your experience level: If you're new to the field, the A+ is a great starting point.

  2. Your career goals: Consider what kind of IT work you want to do and choose certifications that align with those goals.

  3. Employer requirements: Some employers may require specific certifications for certain positions.

These are just a few of the many computer technician certifications available. The best certification for you will depend on your experience and career goals.


References:

  1. https://www.comptia.org

  2. https://www.certexams.com

  3. https://www.examguides.com

Thursday, February 15, 2024

Navigating Certification Success: The Importance of Practice Tests

Introduction: Achieving success in IT certifications is a significant milestone, showcasing your expertise and dedication to staying abreast of industry standards. One indispensable tool in your certification journey is the practice exam. In this blog post, we'll delve into the importance of certification practice exams, how they can enhance your preparation, and some key tips for making the most of this valuable resource.

The Role of Practice Exams: 

Simulating the Exam Environment: Practice exams replicate the actual testing environment, allowing you to familiarize yourself with the format, time constraints, and question types. This simulation is crucial for reducing anxiety and boosting confidence on exam day.

Identifying Knowledge Gaps: Practice exams help you pinpoint areas where your understanding may be lacking. Analyzing your performance can guide your study focus, ensuring a more targeted and efficient preparation strategy.

Building Exam Stamina: Certification exams can be mentally taxing due to their length and complexity. Regularly taking practice exams helps build the stamina needed to maintain focus and concentration throughout the actual test.

Gauging Progress: Tracking your scores over multiple practice exams provides a tangible measure of your progress. Witnessing improvement over time can be a powerful motivator, boosting your confidence as you approach the certification date.

Tips for Effective Practice Exam Utilization:

Use Official Materials: Whenever possible, rely on practice exams provided by the certification body. These materials align closely with the actual exam content, ensuring a more accurate representation of what to expect.

Diversify Your Sources: Supplement official practice exams with materials from reputable sources. Different perspectives and question styles can enrich your understanding and prepare you for a broader range of scenarios.

Time Management: Practice managing your time effectively during practice exams. Allocate specific amounts of time to each question and practice moving on when faced with challenging items. Time management is a critical skill on exam day.

Review Incorrect Answers: After completing a practice exam, thoroughly review the questions you answered incorrectly. Understand the reasoning behind the correct answers and reinforce your understanding of the related concepts.

Create a Realistic Exam Environment:  Mimic the actual exam conditions as closely as possible. Choose a quiet environment, set a timer, and eliminate distractions. This helps create a focused and realistic testing experience.

Conclusion:

In the pursuit of IT certifications, practice exams emerge as invaluable tools, offering a structured approach to preparation and a glimpse into the challenges ahead. Integrating these exams into your study routine can significantly enhance your chances of success. As you navigate the certification landscape, embrace the power of practice exams as a guiding beacon toward achieving your professional goals.

References: Practicetests.info practice tests website offering a+ exams, ccna exams, ccnp exams, cwna exams, and others from different vendors such as simulationexams, certexams, and measureup.

Tuesday, January 23, 2024

AppStore Practice Exam Engine App for CCNA

 Certexams.com released practice exams engine for CCNA. The engine has in app products for CCNP ENCOR, CCNP ENARSI, CCST, Comptia A+, Network+, Security+, CWNA, and JUNIPER JNCIA certs. You may down load the free app from here:

https://apps.apple.com/us/app/se-integrated-exam-engine/id1490987462?mt=12

The main features include the following:

1. Each practice exam include 200+ highly relevant questions

2. Flash cards for each question.

3. Various question types (MCSA, MCMA, Exhibit, true/false, performance based)

4. Category wise scoring and reporting.

5. Configuration of exam to change the maximum time, score, pass percentage and permitted buttons while taking exam.

6. Review feature after taking simulated exam allows you to understand the incorrect answers and explanation for the question.

We also offer iOS apps for CCNA, CCNP ENCOR, CCNP ENARSI, and others. 

The MAC application for CCNA consists of 400 odd questions with answers and explanation. Each question will carry detailed explanation and references where applicable.

Also checkout Android apps here: https://www.simulationexams.com/android-ios-apps.htm

The practice tests offer most recent updates to the certifications and conforms the latest exam objectives. Relevant questions are given for deep preparation and passing the exam in first attemp.

Good luck!