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Q1.The Engineering Department to twelve persons in a small corporation is on a regular 10 Base-T Ethernet Lan hub with 16 ports. The busy group started complaining because of the slow network performance. The network was operating at 50% utilization, whereas 30% utilization is acceptable. If you are the corporation’s Information Technology Engineer and have to resolve the problem technically,
a)Describe four choices for resolving the problem, maintaining the LAN as an Ethernet LAN.
b)State the advantages and disadvantages of each approach.
a)Create a conceptual matrix table, as shown below, that would be generated by the hub that relates the IP address, MAC address, and port number.
Q3.Design a client/server network with two servers operating at 100Base-T Fast Ethernet speed and the clients operating at regular 10Base-T Ethernet speed using a 10/100 Mbps NIC. The hub is located in a wiring closet, but the servers and clients are not. Assume that a satisfactory performance is achieved at 30% utilization of the LAN.
Q4.Customer network management is used to look at the QoS classes associated with VCIs across an ATM link interface. What three MIB group and objects are used to collect the information? Describe the relationships among them.
Q6.Switched virtual circuit transmission overhead could be high for sending small amounts of information. Calculate the minimum time required to transmit one ATM cell from Miami to San Francisco on a basic SONET network (OC-3) for the following cases. Assume that the distance is 4500 km and that the propagation speed is 300 meters per microsecond.
a. datagram service
b. switched virtual circuit service
c. permanent virtual circuit service
Q8.An IT manager gets complaints from the users that there is excessive delay in response over the Ethernet LAN. The manager suspects the cause of the problem is excessive collisions on the LAN. She gathers statistics on the collisions using the dot3Stats Table and localizes the problem to a single faulty interface card. Explain how she localized the problem. You may use RFC 2358 to answer this exercise.
Q9.You have been assigned the responsibility of adding a new vendor’s components with its own NMS to an existing network managed by a different NMS. Identify the three sets of functions that you need to do to fulfill your task.
Q11.A high school class consists of four boys and four girls. The names of the boys with their heights are Adam (65”), Chang (63”), Eduardo (72”), and Gopal (62”). The names of the girls are Beth (68”), Dipa (59”), Faye (61”), and Keisha (64”). For each of the following cases, write an ASN.1 description for the structure and record values by selecting appropriate data types. Start with data type Student info, listing information on each student.
Q13.Imagine that you are working for a company (maybe you are) that has decided to move from an SNMP-based to a Web-based management system. You are asked to prepare an executive summary on the two approaches, WBEM and JMX, and make a recommendation. Present your report, which is not to exceed two pages (executives don’t have the time or patience to read longer reports).
Dr. Aravind Banakar
9901366442 – 9902787224