(Real Exam Questions) Cisco 700-821 - Unlock Your Path to Passing

Networking Concepts

• Networking encompasses interconnected devices and systems sharing resources and data.
• Key elements include: protocols, topologies (e.g., bus, star), and communication methods (e.g., wired, wireless).
• Network architectures (e.g., client-server, peer-to-peer) define how devices interact and share resources.
• Network security is crucial, involving measures to protect data and systems from unauthorized access.

VPN Technology

• VPN (Virtual Private Network) extends a private network across a public network.
• VPNs create a secure, encrypted connection between a user's device and a remote server.
• Key benefits include enhanced security and privacy, enabling secure remote access to resources.
• Common VPN protocols include OpenVPN, IPsec, and SSTP.
• VPN setups can be client-based or server-based, depending on configuration needs.
• VPNs are used for remote access, site-to-site connectivity.

Security Protocols

• Security protocols protect data transmissions and network communications.
• Examples include:
  • SSL/TLS (Secure Sockets Layer/Transport Layer Security): Encrypting data in transit.
  • SSH (Secure Shell): Providing secure remote access.
  • WPA2/WPA3 (Wi-Fi Protected Access): Enhancing Wi-Fi security.
  • Firewalls: Preventing unauthorized network access.
• Protocols often involve encryption algorithms and authentication methods for securing data.
• Different protocols are suitable for various applications and levels of security requirements.

Cloud Services

• Cloud services deliver computing resources and services over the internet.
• Common cloud service models include:
  • Infrastructure as a Service (IaaS): Providing virtualized computing resources.
  • Platform as a Service (PaaS): Offering development platforms and tools.
  • Software as a Service (SaaS): Delivering software applications over the internet.
• Benefits include scalability, cost-effectiveness, and accessibility.
• Cloud providers include AWS, Azure, and Google Cloud.

Troubleshooting Techniques

• Troubleshooting identifies and resolves network or system issues.
• Common approaches include:
  • Identifying the problem: Gathering information about symptoms and affected systems.
  • Isolating the problem: Narrowing down the potential causes.
  • Testing possible solutions: Implementing temporary fixes or workarounds.
  • Implementing permanent solutions: Correcting the underlying problem.
  • Documentation: Recording all steps taken in case of recurring problems.
• Network tools (e.g., ping, traceroute, Wireshark) aid in troubleshooting network problems.
• System logs, error messages, and user reports provide diagnostic information.
• Remote access tools facilitate troubleshooting across multiple systems.

This quiz covers essential networking concepts, including network architectures, topologies, and security measures. It also explores VPN technology, highlighting its secure connection methods and benefits. Test your knowledge of these interconnected systems and their protocols!

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