CSE
Quiz0InternetSecurity.pdf

When one computer puts something on the wire other

Info icon This preview shows pages 2–3. Sign up to view the full content.

connected to broadcast media through the Network Interface Card. When one computer puts something on the wire other computer can see that. The computer looks at header of IP packet. Header and IP packet are part of Ethernet frame. NIC looks for the destination address in the header, if address matches it get the data. The address is a hardware address consists of 6 bytes and called MAC. Every NIC has this address burned into it. Example broadcast address is FF:FF:FF:FF:FF:FF. When Iphone/smart phone is close to a wifi Network it tries to connect with the wifii. Wifi ask the phone for the MAC address, the phone exchange MAC address and causes privacy concerns. This issue is solved by providing software generated fake MAC addresses. The real MAC address is given only when user actually connect with the network. 4: (20) what is IP address? what is difference between IP v4 and IP v6? which version we are using in this class? why do we need IP address? how does computer recognize ip address? use an example to describe how IP address work, in a bits wise. How do you know how many hosts can you have? Also how do you know how many net can you have and the reasons? Which part of ip address the router is looking at and why? Ans. IP address is short for of Internet Protocol Address. IP address is numerical label assigned to each device connected to a computer network. IP address provides identity to a networked device. There are IPv4 and IPv6 IP addresses. Ipv4 is 32 bits and Ipv6 is 128 bits. As the professor discussed we will be discussing mostly Ipv4 for the purpose of our class. IP address is very important as it serves two important functions: host or network interface identification and location addressing. In a 32-bits (4 bytes) IP address byte is separated by a dot, or period. A typical IP address look like this: 192.168.10.21
Image of page 2

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 3
This is the end of the preview. Sign up to access the rest of the document.
  • Spring '17
  • Du
  • IP address, Internet Protocol Suite

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern