#1 a) a) What is the difference between the IEEE 802.11 standard and the IEEE 80
ID: 3538255 • Letter: #
Question
#1
a) a) What is the difference between the IEEE 802.11 standard and the IEEE 802.16 WiMAX standard?
b) When we make a wireless connection from our desktop at home, do we use fixed or mobile WiMAX?
#2
What is the relationship between a base station and a mobile switching center?
#3
What are the functions of a mobile switching center?
#4
What is the difference between a hard handoff and a soft handoff?
#5
How is a repeater different from an amplifier?
#6
What do we mean when we say that a switch can filter traffic? Why is filtering important?
#7
How is a hub related to a repeater?
#8
Which one has more overhead, a switch or a router? Explain your answer
#9
A switch uses a filtering table; a router uses a routing table. Can you explain the difference?
Explanation / Answer
1)a)
b) fixed Wimax
2) based station forward the call to mobile switching center to send the call to reciever end .
3)
The mobile switching center (MSC) is the primary service delivery node for GSM/CDMA, responsible for routing voice calls and SMS as well as other services (such as conference calls, FAX and circuit switched data).
The MSC sets up and releases the end-to-end connection, handles mobility and hand-over requirements during the call and takes care of charging and real time pre-paid account monitoring.
4)Doesn't matter which service you are talking about as it applies to the registering of phones. The basics of it is when you do a hard handoff it can be rough on the network because the subscriber is just pushed on that tower. In a soft handoff, the cell is allowed to cycle, find that better tower and then be pulled into the tower.
A cell phone being turned on is basically a hard handoff, as it really just appears on the network. While the soft handoff would be when you are driving down the road and two towers are communicating that your phone coverage is going to pass from one of them to the next.
5)A repeater will re-generate the signal, and an amplifier will not. Any noise on the line will be amplified with the orginial signal. A repeater eliminates the noise
7)A hub is a repeater, also known as a multi-port repeater. It does amplify the signal. It also amplifies anything it sees on the line, including noise
8) router , since it use the algoritm to route the the data while swith forwared aal the data packets..
9)A switch can filter, flood or forward based on its MAC address forwarding table. The switch will note any MAC address that is the source address on a frame and the port that the frame was received. Then it will forward or filter depending upon the forwarding table. If a MAC address is found on more than one port (because of loops in the network) then the frame is forwarded on both ports. If a frame is received on a port and the destination MAC address is only found on that port then the frame is filtered and discarded. If the destination MAC address is not found in the forwarding table, then the bridge will flood the frame out all ports except the receiving port.
A router will build a routing table based on the routing protocol that is being used in the router. The routing protocol (RIP, RIPv2, AS-AS, OSPF etc) will have a method of identifying the best route to send the IP packet to the destination. When an IP frame is received then it will be routed on the best route to the destinatio
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