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Questions and Answers
What is the main function of a Forwarding Server?
What is the main function of a Forwarding Server?
What does the Organizationally Unique Identifier (OUI) signify in a network interface?
What does the Organizationally Unique Identifier (OUI) signify in a network interface?
What is the primary role of DHCP in a network?
What is the primary role of DHCP in a network?
Which protocol is primarily used for securing command-line remote access?
Which protocol is primarily used for securing command-line remote access?
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What type of protocol is ICMP, and what is its main purpose?
What type of protocol is ICMP, and what is its main purpose?
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Which protocol is commonly used to synchronize the clocks of devices on a network?
Which protocol is commonly used to synchronize the clocks of devices on a network?
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What is a Digital Certificate primarily used for?
What is a Digital Certificate primarily used for?
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What is the key characteristic of UDP as a protocol in the TCP/IP suite?
What is the key characteristic of UDP as a protocol in the TCP/IP suite?
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What is the primary function of the SYN flag in TCP?
What is the primary function of the SYN flag in TCP?
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Which of the following commands is used to display TCP/IP network configurations on Windows?
Which of the following commands is used to display TCP/IP network configurations on Windows?
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What is the role of a router in a network?
What is the role of a router in a network?
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Which port is specifically used for SSH file transfers?
Which port is specifically used for SSH file transfers?
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Which type of IPv6 address is designed to transmit data to multiple nodes simultaneously?
Which type of IPv6 address is designed to transmit data to multiple nodes simultaneously?
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What command can be used to check for duplicate IP addresses in a network?
What command can be used to check for duplicate IP addresses in a network?
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If another device is using the same IP address, what should be checked first?
If another device is using the same IP address, what should be checked first?
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What is the structure of an IPv4 address?
What is the structure of an IPv4 address?
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What is the primary purpose of APIPA in networking?
What is the primary purpose of APIPA in networking?
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Which DNS record type is used to map an IPv6 address to a domain name?
Which DNS record type is used to map an IPv6 address to a domain name?
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How does classless addressing differ from classful addressing?
How does classless addressing differ from classful addressing?
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What is the function of acknowledgment numbers in TCP?
What is the function of acknowledgment numbers in TCP?
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Which remote access protocol is commonly used for Windows desktop access?
Which remote access protocol is commonly used for Windows desktop access?
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What does the TLD in a domain name represent?
What does the TLD in a domain name represent?
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Which utility is used to capture network traffic from the command line?
Which utility is used to capture network traffic from the command line?
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What is the primary function of a site-to-site VPN?
What is the primary function of a site-to-site VPN?
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Study Notes
Networking Terms
- Forwarding Server: Acts as an intermediary that forwards requests to another server.
- Organizationally Unique Identifier (OUI): A 24-bit sequence from IEEE marking the NIC manufacturer in a device's MAC address.
- IP Scanner: Tools that enumerate devices on a network, revealing hostnames, IPs, MACs, and open ports.
- DHCP (Dynamic Host Configuration Protocol): Manages dynamic assignment of IP addresses within a network environment.
- Gateway: Device that connects and manages sessions between different networks.
- ICMP (Internet Control Message Protocol): Part of the TCP/IP suite, used for error reporting in transmission issues.
- NTP (Network Time Protocol): Synchronizes the time across networked devices.
- VDI (Virtual Desktop Infrastructure): Enables remote desktop access through virtual machine instances.
- RDP (Remote Desktop Protocol): Microsoft protocol for remote access and control of computers.
- SSH (Secure Shell): Ensures secure command-line access to remote systems.
- Telnet: Protocol facilitating remote server access, noted for its lack of encryption.
- UDP (User Datagram Protocol): Connectionless protocol, commonly utilized in time-sensitive data transmissions.
- Digital Certificate: A file that authenticates user identity and contains a public key.
- GRE (Generic Routing Encapsulation): Cisco-developed tunneling protocol for encapsulating messages over a tunnel.
- IPsec (Internet Protocol Security): Provides security services like encryption and authentication at layer 3 of TCP/IP.
- NDP (Neighbor Discovery Protocol): Works with ICMPv6 for discovering neighboring IPv6 devices.
- FTPS (FTP Secure): Enhances FTP by integrating SSL/TLS for secure data transfer.
- SYN (Synchronize): TCP flag that initiates the connection process via a three-way handshake.
Networking Commands
- IP Link show, IP address show: Commands that reveal active network interfaces and their IP configurations.
- ipconfig: Windows command for viewing TCP/IP network settings.
- ping vs. ping -a: Utilizes ping for connectivity testing; -a resolves IPs to hostnames.
- arp: Manages the Address Resolution Protocol table.
- netstat: Displays connections, routing tables, and statistics for network interfaces.
Gateway Devices
- Router: Routes traffic between networks and forms broadcast domains.
- Hub: Basic device for sending incoming traffic to all connected devices broadly.
- Switch: Forwards traffic using MAC addresses to create collision domains.
Common Ports
- Port 3389: RDP for secure remote Windows access.
- Port 1433: SQL server access.
- Port 443: Secure web traffic through HTTPS.
- Port 5061: SIP for VoIP communication.
- Port 25: Handles outgoing email (SMTP).
- Port 22: Used for SSH file transfers.
Key Networking Concepts
- IPv4 Address Structure: Comprises four octets and is represented as a 32-bit address, including network and host ID.
- Troubleshooting TCP/IP Errors: Utilize tools like ping and traceroute to identify connectivity problems; monitor for duplicate IPs.
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IPv6 Address Types:
- Unicast: Targets a single node.
- Multicast: Broadcasts to multiple recipients.
- Anycast: Routes to the nearest of multiple interfaces.
- IP Address Conflicts: Check the DHCP server and use commands to release/renew IP addresses.
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Classful vs. Classless Addressing:
- Classful: IPs grouped into classes (A, B, C) based on segments.
- Classless: Utilizes CIDR for flexible subnetting.
- APIPA (Automatic Private IP Addressing): Assigns devices a 169.254.x.x address when no DHCP server is available.
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DNS Structure:
- Namespace: Hierarchical organization of domain names.
- Name Servers: Storage for DNS records.
- TLD: Highest domain hierarchy level (e.g., .com, .org).
- Resolvers: Query DNS records.
DNS Resource Record Types
- A Record: Maps IPv4 addresses to domain names.
- AAAA Record: Connects IPv6 addresses to domain names.
- TXT Record: Holds text, often for domain verification.
- MX Record: Directs to the mail server for email handling.
Additional Networking Concepts
- Acknowledgement Numbers: Confirm packet reception in TCP communication.
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VPN Types:
- Site-to-Site: Links two networks together.
- Client-to-Site: Connects individual users to a network.
- Terminal Emulation Software: Includes tools like Putty (SSH) and HyperTerminal (Telnet).
- Troubleshooting Routers: Use traceroute to find network path issues.
- Remote Access Methods: RDP and SSH are popular for accessing remote systems securely.
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Utilities:
- tcpdump: For capturing and analyzing network traffic.
- netstat: For viewing network states and connections.
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Description
Test your knowledge on essential networking terminology with this quiz. Learn definitions for key concepts like Forwarding Server, Organizationally Unique Identifier, and IP Scanner. Perfect for networking students and professionals looking to refresh their skills.