Reference no: EM133084244

Networking and Security Problems

Topic Problems

• Describe main differences between a switch and a hub.
• If you change your network infrastructure from hubs to switches, how would the change affect the network traffic that was seen by your PC?
• Describe the difference between circuit and packet switched networks. Which one was more common in 2018?
• There were many people involved in the development of packet switching. One notable person worked for the National Physics Laboratory in the UK. What was his name?
• Describe the events that led to the development of ARPANET.
• How many network cards does a router require? Explain.
• Describe the basic operation of a router.
• Two important models of networking are the OSI model and the Internet model. In what ways do these models help us understanding the networking?
• Session and presentation layers of OSI model do not exist in the Internet model of networking. How does the encryption and login still work in TCP/IP applications?
• Briefly describe the functions of the following layers.
o Application layer
o Data Link layer
o Network layer
o Physical layer
• Describe why switches are often described as layer 2 devices.
• Interactions at data link layer are sometimes referred to as hop-to-hop communication. How are the interactions at network layer described? Explain.

Linux Lite Questions
• What is the name of file manager in Linux Lite?
• What is the version of our Linux Lite virtual Image?
• Where is the default file system location of home directory of user named Tom in Linux Lite?
• Complete the following table by writing the equivalent Linux Lite programs.