Key Networking Terms Quiz

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Questions and Answers

What is the main function of a Forwarding Server?

To store data files for backup purposes.
To pass on requests or queries to another server. (correct)
To initiate data transmission across networks.
To encrypt sensitive information during transit.

What does the Organizationally Unique Identifier (OUI) signify in a network interface?

The software version of the network interface.
The manufacturer of the network interface card. (correct)
The physical address of a device.
The secure key for device authentication.

What is the primary role of DHCP in a network?

To manage static IP address assignments.
To encrypt data packets during transmission.
To dynamically distribute IP addresses. (correct)
To monitor network traffic and report anomalies.

Which protocol is primarily used for securing command-line remote access?

SSH (D) Signup and view all the answers

What type of protocol is ICMP, and what is its main purpose?

Core protocol that notifies when transmission issues occur. (B) Signup and view all the answers

Which protocol is commonly used to synchronize the clocks of devices on a network?

NTP (B) Signup and view all the answers

What is a Digital Certificate primarily used for?

Authenticating the identity of users online. (A) Signup and view all the answers

What is the key characteristic of UDP as a protocol in the TCP/IP suite?

It is connectionless and ideal for time-sensitive transmissions. (C) Signup and view all the answers

What is the primary function of the SYN flag in TCP?

Initiate a three-way handshake (D) Signup and view all the answers

Which of the following commands is used to display TCP/IP network configurations on Windows?

ipconfig (D) Signup and view all the answers

What is the role of a router in a network?

Direct traffic between different networks (A) Signup and view all the answers

Which port is specifically used for SSH file transfers?

Port 22 (B) Signup and view all the answers

Which type of IPv6 address is designed to transmit data to multiple nodes simultaneously?

Multicast (C) Signup and view all the answers

What command can be used to check for duplicate IP addresses in a network?

ping (C) Signup and view all the answers

If another device is using the same IP address, what should be checked first?

The DHCP server (B) Signup and view all the answers

What is the structure of an IPv4 address?

32-bit address made up of four octets (C) Signup and view all the answers

What is the primary purpose of APIPA in networking?

To allow a device to self-assign an IP address when it cannot connect to a DHCP server (B) Signup and view all the answers

Which DNS record type is used to map an IPv6 address to a domain name?

AAAA Record (C) Signup and view all the answers

How does classless addressing differ from classful addressing?

It uses CIDR to allow for more flexible subnetting. (D) Signup and view all the answers

What is the function of acknowledgment numbers in TCP?

To confirm the successful receipt of packets (B) Signup and view all the answers

Which remote access protocol is commonly used for Windows desktop access?

RDP (C) Signup and view all the answers

What does the TLD in a domain name represent?

The highest level of domain hierarchy (D) Signup and view all the answers

Which utility is used to capture network traffic from the command line?

tcpdump (C) Signup and view all the answers

What is the primary function of a site-to-site VPN?

To link two remote networks together (B) Signup and view all the answers

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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.
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.
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.
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.
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.
Utilities:
- tcpdump: For capturing and analyzing network traffic.
- netstat: For viewing network states and connections.