Briefly describe registered ports.
What will be an ideal response?
The port numbers from 1024 to 49151 are called registered ports. Less-common TCP/IP applications can register their ports with the IANA. Unlike well-known ports, anyone can use these port numbers for their servers or for ephemeral numbers on clients. Most operating systems steer away (or are in the process of steering away) from using these port numbers for ephemeral ports, opting instead for the dynamic/private port numbers.
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To experience what new users encounter, ask the instructor who teachers the Introduction to Computers class if you can sit with students during a lab session. It is optimal to watch them while they learn to surf the Web, but watching any laboratory activity is useful for this exercise.
From an unobtrusive distance, watch one of the class members for 20 minutes. Maintain a neutral disposition at all times during your observation. List the top three problems that the user encountered and how they reacted to them.
Which statement best describes what happens to frames when the hub sends them to the NICs on the network?
A. The frames are sent only to the NIC that has the destination MAC address. B. The frames are received by every NIC, but only the NIC with the matching MAC address processes the frame. C. Every NIC processes the frame when it receives it. D. The NIC broadcasts the contents of the frame.
A slicer includes a ________ that indicates the category of the slicer items
A) button header B) filter header C) slicer header D) category header
A network card must be placed in promiscuous mode for the sniffer to collect all data
Indicate whether the statement is true or false.