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.
Answer:
def length( mystring):
count = 0
for i in mystring:
count += 1
return count
def reversed( mystring):
strlist = []
for i in range(length(mystring)):
strlist.append(mystring[(length(mystring) - 1) - i])
txt = "".join(strlist)
return txt
string = 'Yolanda'
print(reversed(string))
Explanation:
The python module defines two functions 'reversed' and 'length'. The length function counts the number of characters in a string variable while the reversed function reverses the string variable value.
All options in the Advanced tab in the Share Workbook dialog box.
- Don’t keep change history
- Show comments made by all users
- Update changes when file is saved
- Track changes for certain amount of days
- Allow changes by more than one user at a time
- Automatically update changes in certain time periods
<u>Explanation:</u>
In shared workbook in advanced tab it has following options. Based on end user selection changes are applied on shares workbook.
1. Either keep the history for certain period or don’t keep the history on shared workbook.
2. On share work Save changes on period schedule (automatically update) or just see other user changes.
3. Before changes are made for share workbook either prompt for save option or last modified saved.
4. Printer review and filter setting for personal view.
C. Send it to the recycle bin and empty the recycle bin
The tab used to instead a Hyperlink into a slide is the Insert tab under the “Links” group.
