Compare and contrast Layer 2 addresses with Layer 3 addresses
What will be an ideal response?
Layer 2 addresses are used only for local delivery when transporting a frame across a shared
local medium. When a packet crosses an internetwork, it gets encapsulated in a new data link
layer header with new Layer 2 addresses for each hop it takes. Layer 2 addresses use a flat
addressing scheme and do not indicate on what network a device is located. If a device is moved
to another network, its Layer 2 address does not need to change. Layer 3 addresses, on the other
hand, are carried from source to destination host across an internetwork. Layer 3 addresses use a
hierarchical addressing scheme and indicate a network number and host identifier.
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I want to have a nonmember function to have access to the private members of a class. The class must declare that function a
a. friend b. inline c. static d. None of the above nonmember functions cannot have the access described here.
What is the benefit of using a call by reference when working with vectors or queue objects? In other words, why is it good to pass a reference of a queue or vector to a function instead of using a call by value?
What will be an ideal response?
The accompanying figure shows the ____ method of connecting a printer to a network.
A. one-computer B. direct-to-router C. print-server D. direct-to-printer
An update query is an action query that is used to add, change, or delete one or more tables in a database
Indicate whether the statement is true or false