Suppose there are two ISPs providing WiFi access in a particular café, with each ISP operating its own AP and having its own IP address block. a. Further suppose that by accident, each ISP has configured its AP to operate over channel 11. Will the 802.11 protocol completely break down in this situation? Discuss what happens when two stations, each associated with a different ISP, attempt to transmit at the same time. b. Now suppose that one AP operates over channel 1 and the other over channel 11. How do your answers change?

Question

10-03-2020
Computers and Technology

contestada

Suppose there are two ISPs providing WiFi access in a particular café, with each ISP operating its own AP and having its own IP address block. a. Further suppose that by accident, each ISP has configured its AP to operate over channel 11. Will the 802.11 protocol completely break down in this situation? Discuss what happens when two stations, each associated with a different ISP, attempt to transmit at the same time. b. Now suppose that one AP operates over channel 1 and the other over channel 11. How do your answers change?

Respuesta :

Otras preguntas

Mr. Jackson lengthened the fence along the back of his yard. Before he added 130 feet, the fence was 300 feet long. He divided the fence into 5-foot sections.

Suppose a piece of silver jewelry contains 7.97×1022 atoms of silver ( Ag ). How many dozens of silver atoms are in the piece of jewelry?

A store manager is marking down crystal sculptures from $195 to $125. What percentage is the discount

ms. jaffey had a total of 428.5 ounces of pretzels to put into 5 bowls for a party. she put an equal number of ounces of pretzels into each bowl how many ounces

"By the 1930s, many Europeans were ready to leave behind the liberal, democratic order created after 1918 by Britain, France, and the United States for a more a

Career in Event Planning is more suitable for Intoverts Extroverts

Which of the following forms of housing had existed well before the gilded age in the United States? a. Log cabinsb. Wigwamsc. Longhousesd. Tipis

The inferior border of the teres major is the anatomical border between the axillary and brachial arteries. a. True b. False

What does Nietzsche think about power? A) Power should only be used to benefit others by increasing their power. B) All people desire power over others, wheth

Rashid Zabka leased a 4-door sedan for $199.88 per month for48 months. He paid a deposit of $1,515.00 a title fee of $95.00,and a license fee of $65.00. The lea

monica789412 monica789412 · Answer 1 · 2020-03-17T19:08:17+01:00

The two APs will typically have different SSIDs and MAC addresses. If the two wireless stations transmit the same, there will be a collision, so the rate will be 22Mbps.

Explanation:

A wireless station arriving to the café will associate with one of the SSIDs (that is, one of the APs). After association, there is a virtual link between the new station and the AP. Label the APs AP1 and AP2. Suppose the new station associates with AP1. When the new station sends a frame, it will be addressed to AP1. Although AP2 will also receive the frame, it will not process the frame because the frame is not addressed to it. Thus, the two ISPs can work in parallel over the same channel. However, the two ISPs will be sharing the same wireless bandwidth. If wireless stations in different ISPs transmit at the same time, there will be a collision. For 802.11b, the maximum aggregate transmission rate for the two ISPs is 11 Mbps.
Now if two wireless stations in different ISPs (and hence different channels) transmit at the same time, there will not be a collision. Thus, the maximum aggregate transmission rate for the two ISPs is 22 Mbps for 802.11b.