[2K24] Authentic Facebook Blueprint 100-10 Exam Questions to Pass First Time

Network Fundamentals

• Networks connect devices to share resources and information.
• Key components include: devices (computers, printers), transmission media (cables, wireless), and network protocols.
• Types of networks: LAN (Local Area Network), WAN (Wide Area Network), MAN (Metropolitan Area Network).
• Network topologies include bus, star, ring, mesh, and tree.
• Network layers: physical, data link, network, transport, session, presentation, application (OSI model).

Network Protocols

• Protocols define rules for communication between devices.
• TCP/IP is the most common suite of protocols.
• IP (Internet Protocol): responsible for addressing and routing packets across networks.
• TCP (Transmission Control Protocol): ensures reliable delivery of data.
• UDP (User Datagram Protocol): faster, less reliable data transfer.
• HTTP (Hypertext Transfer Protocol): for web browsing.
• FTP (File Transfer Protocol): for file transfers.
• SMTP (Simple Mail Transfer Protocol): for email.
• DNS (Domain Name System): translates domain names to IP addresses.
• DHCP (Dynamic Host Configuration Protocol): automatically assigns IP addresses.
• ARP (Address Resolution Protocol): maps IP addresses to MAC addresses.

Network Troubleshooting

• Troubleshooting involves identifying and resolving network issues.
• Common troubleshooting steps include verifying connectivity, checking cables, and examining logs.
• Techniques include pinging, tracert/traceroute, and using network monitoring tools.
• Common causes of network problems include faulty hardware, software conflicts, and configuration errors.
• Analyzing network traffic and identifying bottlenecks can pinpoint issues.
• Understanding network architecture and protocols helps in diagnosing problems efficiently.

Security Fundamentals

• Network security protects the network from unauthorized access, use, disclosure, disruption, modification, or destruction.
• Key concepts include: authentication, authorization, confidentiality, integrity, availability (CIA triad).
• Common security threats include malware, hacking, phishing, denial-of-service attacks, and social engineering.
• Firewalls provide a barrier against unauthorized access.
• Intrusion detection systems monitor network activity for suspicious patterns.
• Encryption protects data transmitted over the network.
• Access control mechanisms restrict network access based on user roles and permissions.
• Security best practices include strong passwords, regular updates, and security awareness training.

IP Addressing

• IP addresses uniquely identify devices on a network.
• IP addresses are 32-bit (IPv4) or 128-bit (IPv6) numerical labels.
• IP addresses are hierarchical, organized into networks and sub-networks.
• IP address classes (A, B, C, D, E) are used to define network size.
• Subnetting divides a network into smaller subnets, improving efficiency and security.
• Private IP addresses are used within a local network, while public IP addresses are used for internet access.
• IP address configurations include static and dynamic assignments.
• Understanding subnet masks is crucial for determining the network and host portions of an IP address.
• Default gateways connect one network to another to route traffic outside the local network.