EBK COMPUTER NETWORKING
7th Edition
ISBN: 8220102955479
Author: Ross
Publisher: PEARSON
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Expert Solution & Answer
Chapter 7, Problem P5P
a.
Explanation of Solution
“No”, 802.11 will not fully break down since the SSID (Service Set Identifier) and MAC (Media Access Control) of every access point is different.
Reason:
- The two access point (AP) will typically have different MAC and SSID addresses. With the help of one SSID, a wireless station received to the café.
- After the arrival, there is a virtual link between the access point (AP) and the new station.
- Suppose the new station associates with first access point, a frames is send to the first access point...
b.
Explanation of Solution
Modification of answer for the given scenario:
- First the given scenario is two ISPs are send their wireless station in the same channel so that time collision will occurs, but here one access point operates on...
Expert Solution & Answer
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Students have asked these similar questions
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?
Use a diagram to illustrate the four-way handshake protocol for channel
reservation in IEEE 802.11 (i.e., WiFi). Please indicate the name of each frame,
and also the idle period before each frame is transmitted. (Tips: the protocol used
is CSMA/CA with RTS/CTS.)
Use a diagram to illustrate the four-way handshake protocol for channel reservation in IEEE 802.11 (i.e., WiFi). Please indicate the name of each frame, and also the idle period before each frame is transmitted. (Tips: the protocol used is CSMA/CA with RTS/CTS.)
Chapter 7 Solutions
EBK COMPUTER NETWORKING
Ch. 7 - Prob. R1RQCh. 7 - Prob. R2RQCh. 7 - Prob. R3RQCh. 7 - Prob. R4RQCh. 7 - Prob. R5RQCh. 7 - Prob. R6RQCh. 7 - Prob. R7RQCh. 7 - Prob. R8RQCh. 7 - Prob. R9RQCh. 7 - Prob. R10RQ
Ch. 7 - Prob. R11RQCh. 7 - Prob. R12RQCh. 7 - Prob. R13RQCh. 7 - Prob. R14RQCh. 7 - Prob. R15RQCh. 7 - Prob. R16RQCh. 7 - Prob. R17RQCh. 7 - Prob. R18RQCh. 7 - Prob. R19RQCh. 7 - Prob. R20RQCh. 7 - Prob. R21RQCh. 7 - Prob. R22RQCh. 7 - Prob. R23RQCh. 7 - Prob. P1PCh. 7 - Prob. P2PCh. 7 - Prob. P3PCh. 7 - Prob. P5PCh. 7 - Prob. P6PCh. 7 - Prob. P7PCh. 7 - Prob. P8PCh. 7 - Prob. P10PCh. 7 - Prob. P11PCh. 7 - Prob. P12PCh. 7 - Prob. P13PCh. 7 - Prob. P14PCh. 7 - Prob. P15PCh. 7 - Prob. P16P
Knowledge Booster
Similar questions
- Given a scenario where there are two ISPs each running its own Access Point, and each using its own block of IP addresses. a) Consider that each Access Point was configured to run over channel 1, by each of the ISPs. Would the 802.11 protocol completely break down in this scenario? Explain using the following: if there are two stations, each associated with a different ISP, describe what happens when they both attempt to transmit at the same time. b) Suppose instead that one Access Point was configured to run over channel 1 and the other over channel 11. How do your answers in part a change using this scenario? Consider now, that the two Access Points are within the same ISP, located in two neighboring buildings. The interconnection device between the two APs is a switch. A user may move from one AP to another when signal strength decreases as the user moves. The switch is supposed to know which AP the user is connected to. Switches are self-learning; however, they were not…arrow_forwardConsider sending real-time data from Host A to Host B over a packet-switched network. Host A takes an 8-bit measurement every millisecond, and Host A collects these into 64-byte packets. There is one link between Hosts A and B; its transmission rate is 5 Mbps, its propagation delay is 2 × 108 meters/sec, and its length is 3 km. As soon as Host A gathers a packet, it sends the packet to Host B. How much time elapses from the time that Host A begins to take the first measurement in a packet until the entire packet reaches Host B?arrow_forwardGiven a scenario where there are two ISPs each running its own Access Point, and each using its own block of IP addresses. Consider that each Access Point was configured to run over channel 1, by each of the ISPs. Would the 802.11 protocol completely break down in this scenario? Explain using the following: if there are two stations, each associated with a different ISP, describe what happens when they both attempt to transmit at the same time. Suppose instead that one Access Point was configured to run over channel 1 and the other over channel 11. How do your answers in part a change using this scenario? Please answer question 1 and 2.arrow_forward
- Suppose there is exactly one network device X between a sending host (host A) and a receiving host (host B), as shown below. The transmission rate (bandwidth) between the host A and the network device X is R bps (bits per second), and the bandwidth between the network device X and the host B is R bps. The network device uses store-and-forward packet switching. When the host A sends a packet of length L bits to the host B, how much is the end-to-end delay? (Ignore queuing delay, propagation delay and processing delay) Select one: a. L/R b. L*R + L*R c. L/R + L/R d. L*Rarrow_forwardb. Suppose that you are hired by a local company to set up a router that both serves as the network's bidirectional firewall and also NATS hosts in the corporate network. The corporate network consists of about 100,000 machines that simultaneously access the Internet using port-based NAT. What problem could arise if the corporate network only has a single public IP address?arrow_forwardSuppose a computer sends a frame to another computer on a bus topology LAN. The physical destination address of the frame is corrupted during the transmission. What happens to the frame? How can the sender be informed about the situation? Suppose a computer sends a packet at the network layer to another computer somewhere in the Internet. The logical destination address of the packet is cor- rupted. What happens to the packet? How can the source computer be informed of the situation?arrow_forward
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