TCP and UDP Networking Protocols
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Questions and Answers

Which network layer protocol is connectionless and good for video/audio?

  • UDP (correct)
  • ICMP
  • IP
  • IGMP
  • Which routing protocol is suitable for a larger network in terms of cost?

  • BGP
  • OSPF (correct)
  • RJPVZ
  • TCP
  • What does encapsulation involve for each packet?

  • Payload & Trailer
  • Header & Trailer
  • Header & Footer
  • Header & Payload (correct)
  • What is the purpose of using NET to map between public and private IP addresses?

    <p>Address translation</p> Signup and view all the answers

    Which part of an IP address determines its class?

    <p>1st octet</p> Signup and view all the answers

    What does the IP address 192.168.1.10 indicate based on its class?

    <p>Class B address</p> Signup and view all the answers

    What is the purpose of ARP (Address Resolution Protocol)?

    <p>To map between IP and MAC addresses</p> Signup and view all the answers

    What does the Blackhole attack involve?

    <p>Pretending to be the shortest path but dropping received packages</p> Signup and view all the answers

    How is TCP SYN Flood attack carried out?

    <p>Keeping connections half open and flooding the host with re-sent SYN packets</p> Signup and view all the answers

    What is the purpose of Flow Control in networking?

    <p>Measuring network traffic to control congestion</p> Signup and view all the answers

    What is the common security issue associated with FTP, Telnet, and FTP?

    <p>Transmission of passwords in clear text without protection</p> Signup and view all the answers

    What is the TCP Starvation attack?

    <p>Asking the server to send the last packet without closing the connection</p> Signup and view all the answers

    How does the MiM & DoS attack tactic work?

    <p>Quickly exhausting the victim's session limit by closing TCP sessions on the attacker's side</p> Signup and view all the answers

    What are the common vulnerabilities that FTP faces?

    <p>Transmission of passwords in clear text without protection</p> Signup and view all the answers

    What technique is suggested to reduce fake browsers?

    <p>Using SSL for secure communication</p> Signup and view all the answers

    What is the main concern regarding the transmission of passwords in clear text?

    <p>Easy sniffing of passwords and session hijacking by attackers</p> Signup and view all the answers

    Which network layer protocol is connectionless and good for video/audio?

    <p>UDP</p> Signup and view all the answers

    What is the main concern regarding the transmission of passwords in clear text?

    <p>Security vulnerability</p> Signup and view all the answers

    What does encapsulation involve for each packet?

    <p>Header and payload</p> Signup and view all the answers

    How does IP address 192.168.1.10 indicate based on its class?

    <p>Class C</p> Signup and view all the answers

    What technique is suggested to reduce fake browsers?

    <p>Multiplexing</p> Signup and view all the answers

    What is the main purpose of ARP (Address Resolution Protocol)?

    <p>To find the MAC address corresponding to an IP address</p> Signup and view all the answers

    What is the Blackhole attack in networking?

    <p>A router pretending to be the shortest path and dropping or misusing data packets</p> Signup and view all the answers

    What is the purpose of TCP SYN Flood attack?

    <p>To keep connections half open and resend SYN to flood the host</p> Signup and view all the answers

    What is the common vulnerability associated with FTP, Telnet, and FTP?

    <p>Messages can be read and modified during transmission</p> Signup and view all the answers

    What does the TCP Starvation attack involve?

    <p>Asking the server to send the last package without closing the connection</p> Signup and view all the answers

    What does Flow Control in networking aim to achieve?

    <p>Controlling congestion and traffic by measuring network traffic</p> Signup and view all the answers

    What technique is suggested to reduce fake browsers in networking?

    <p>Not opening sources that are not trusted</p> Signup and view all the answers

    What is the common aspect between FTP, Telnet, and FTP in terms of security vulnerability?

    <p>The issue here is transmission of passwords in clear which will enable attackers to easily sniff password &amp; hijack sessions.</p> Signup and view all the answers

    What are common features between FTP, Telnet, and FTP?

    <p>Username + password are sent in clear text without any protection</p> Signup and view all the answers

    Study Notes

    Connectionless Network Layer Protocol

    • User Datagram Protocol (UDP) is connectionless and suitable for video/audio transmission.

    Routing Protocols

    • Open Shortest Path First (OSPF) is cost-effective and suitable for larger networks, optimizing route selection.

    Packet Encapsulation

    • Encapsulation involves wrapping data in packets with headers and trailers, ensuring proper data delivery and routing through the network.

    Purpose of Network Address Translation (NAT)

    • NAT maps private IP addresses to public IP addresses, allowing multiple devices to share a single public IP and enhancing security.

    Determining IP Address Class

    • The first octet of an IP address indicates its class (A, B, C, etc.), with specific ranges assigned to each class.

    Analysis of IP Address 192.168.1.10

    • The address 192.168.1.10 is a Class C address, commonly used for private networks.

    Address Resolution Protocol (ARP)

    • ARP resolves IP addresses to MAC addresses, enabling communication between devices on a local network.

    Blackhole Attack

    • A Blackhole attack involves maliciously discarding network packets, causing loss of data and service disruptions.

    TCP SYN Flood Attack

    • In a TCP SYN Flood attack, an attacker sends numerous SYN requests, overwhelming the target server and exhausting available resources.

    Flow Control in Networking

    • Flow control manages data transmission rates between devices, preventing network congestion and ensuring efficient data flow.

    Common Security Issues with FTP and Telnet

    • FTP and Telnet are vulnerable to interception and unauthorized access, primarily due to lack of encryption.

    TCP Starvation Attack

    • A TCP Starvation attack prevents certain connections from accessing resources by monopolizing bandwidth through excessive SYN packets.

    Man-in-the-Middle (MiM) and Denial of Service (DoS) Attacks

    • MiM attacks intercept communications, while DoS attacks aim to overwhelm and incapacitate network services.

    Vulnerabilities of FTP

    • FTP faces issues such as lack of encryption, exposing sensitive data during transmission and allowing unauthorized access.

    Reducing Fake Browsers

    • Techniques like implementing CAPTCHA, browser fingerprinting, and behavioral analysis help reduce the presence of fake browsers.

    Concerns over Clear Text Password Transmission

    • Transmitting passwords in clear text poses risks of interception, potentially compromising user accounts and sensitive information.

    Common Vulnerabilities Summary

    • FTP, Telnet, and similar protocols lack encryption, making them susceptible to data theft and unauthorized access.

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    Description

    Test your knowledge of TCP and UDP networking protocols, including their reliability, handshaking, and use cases. Also explore the protocols at the network layer.

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