"Look at the following code. Which line will cause a compiler error?

A hub transmits all incoming messages to all of its ports except the port where the messages came in. A switch usually sends mes

leonid [27]

Answer:

MAC Addresses (Destination and Source MAC address)

Explanation:

A switch has 3 primary functions:

Forward frames
Learn addresses
Avoid loops

An Ethernet frame has the header, data and trailer and there are two specific fields in the header that helps the switch to know where to send data in future transmissions.

destination MAC address
source MAC address

every Ethernet frame has this and when the frame hits a switch or any device, any device can look at it ( an Ethernet frame ) and know where it is suppose to go and where it came from.

Every switch has a MAC address table where it stores MAC addresses of different computers on the network.

Example:

When a PC1 sends a frame to PC2 through a switch, the switch looks at the header of the Ethernet frame for the source mac address and adds the source MAC address to its MAC address table and also the port that it came through.

simply put:

A switch looks at the source MAC address to see if it knows it already, if it does. Great! no need to add it again to it's address table.

If it doesn't, it adds it's source address and the port that the frame came from.

This basically how the switch populates its MAC address table.

3 0

3 years ago

Read 2 more answers

Live preview is available on a touch screen T/F

TEA [102]

It is false that live preview is available on a touch screen. Life preview refers to cameras mostly, and to the fact that its display screen can be used as a viewfinder. Viewfinder is what you look through when you are using a camera to take a photo, or to focus on something. So, no, touch screen devices do not have this feature available, only the "old-school" cameras do.

3 0

3 years ago

What some one ask me if i am more of hardware or software person, what is that mean?

balu736 [363]

Answer: Any person or people asking about someone being a hardware or software person displays that they are questioning about the computer knowledge of the person and his/her interest.

The interest can be regarding software tools for programming, designing , etc or hardware device like troubleshooting, assembling the computer parts ,etc.

The person persisting good knowledge about software programming language and software is diverted towards software side .The person who likes to deal with hardware parts of the computer system is hardware-oriented person.

7 0

3 years ago

One vital component of your professional behavior with regard to computing systems today is the creation of _________.

zlopas [31]

One vital component of your professional behavior with regard to computing systems today is the creation of strong passwords.
It is very important to have a good password on your computer, especially if you are dealing with sensitive data and information. It would be for the best to create such a password which won't be hacked into easily, in case somebody wants to steal your data.

3 0

3 years ago

Your manager has asked you to write a program that displays the percentage of males and female in your class. The program should

Blababa [14]

Explanation:

The program using python programming language would be:

First, we write the Input prompt.

Input prompt for the user

number_of_males_in_class = int (input ('Enter the number of males: '))

number_of_females_in_class = int(input('Enter the number of females: '))

Next, we write the Process algorithm.

Process algorithm

total_number_of_students_in_class = number_of_females_in_class + number_of_males

_in_class

percentage_of_males_in_class = number_of_males_in_class / total_number_of_students

_in_class

percentage_of_females_in_class = number_of_females / total_number_of_students

Finally, the Output process

Output process

print('Total number of males in class =', format(percentage_of_males_in_class, '.0%'))

print('Total number of females =', format(percentage_of_females_in_class, '.0%'))

7 0

3 years ago