IEEE802, Computer Engineering


1. (a) Given a baseband bus with station 1 located at 10m, station 2 located at 1000m, and station 3 located at 1010 meters (see diagram above). If the data rate of the bus is 10 Mbps, and the propagation speed of the medium is 200 m/microsecond, how long would it take to send a packet of 100 bits:

(1) between stations 3 and 2?

(2) between stations 3 and 1?

(b) Given a broaband bus with station 1 located at 10m, station 2 located at 1000m, and station 3 located at 1010 meters, and the headend is located at A (see diagram above). If the data rate of the bus is 10 Mbps, and the propagation speed of the medium is 200 m/microsecond, how long would it take to send a packet of 100 bits:

(1) between stations 3 and 2?

(2) between stations 3 and 1?



2. Given a five station token bus LAN with station addresses of 3000, 500, 100, 70, and 50. Stations with addresses of 5000, 4000, 400, 90, and 60 are waiting to enter the ring. Assume a 16 bit address size for the token bus LAN.

(a) Show, in the correct order, each of the MAC control frames that would be sent over the token bus when station 100 attempts to add new station(s) to the ring.

(b) Show, in the correct order, each of the MAC control frames that would be sent over the token bus when station 50 attempts to add new station(s) to the ring.

Use the frame format show below to identify the MAC control frames being sent:



3. Consider a five station token bus network. Calculate the number of frames sent, and the token rotation time (TRTC) for each station, for 5 complete rotations of the token. The priorities of the stations are as follows:

Station Address

Priority

1

6

2

4

3

4

4

4

5

6



Assume the following conditions for the network:

• Time is measured in octet times

• The time to pass the token is 20

• All stations have an unlimited number of frames to send

• The token holding time (THT) for sending priority 6 frames is 400

• The target token rotation time for the priority 4 frames (TRT4) is fixed at a value of 1400

• The frame length is the same fixed value for each station and equal to 100 octets

• The stations are ordered by decreasing station address number
Posted Date: 10/10/2012 11:21:58 PM | Location : United States







Related Discussions:- IEEE802, Assignment Help, Ask Question on IEEE802, Get Answer, Expert's Help, IEEE802 Discussions

Write discussion on IEEE802
Your posts are moderated
Related Questions
What are the Disadvantages of a VPN implementation The greatest disadvantage of a VPN implementation is its non-flexibility to accept unknown locations. VPN works extremely wel

what is dbms goal?

You have been retained to examine how many check-in agents should be used at a check-in counter for a big hotel. During normal business hours, customers arrive at a rate of about 2

Internet:  The Internet, an umbrella term cover countless network and services that comprise a super-network, is a global network of computer networks that was started in the 1

Communication displays give support in determining the frequency of communication, whether congestion in message queues or not, volume and the type of patterns being communicated e

Explain in details the various standard I/O interfaces. The various standard I/O interfaces are:  1. The Peripheral component interconnect(PCI) bus is a standard that suppor

Which of following requires refreshing SRAM., DRAM., ROM. or EPROM. ? Ans. DRAM. requires refreshing.


Interconnection Network (IN):  IN performs data exchange between the PEs, manipulation functions and data routing. This IN is under the control of CU.

Which the digital logic family has the lowest propagation delay time ? Ans. ECL is the digital logic family that has the lowest propagation delay time. In ECL lowest propagati