Switched virtual circuit transmission overhead could be high for sending small amounts of information.

1

• Network Management

2

• Network Management
•  
• 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 corporations
  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.

3

• Q2.Two virtual LANs, 145.50.50.1 belonging to NM
  lab, and 145.50.60.1 belonging to Networking lab,
  each have three workstations. The former has
  workstations 145.50.50.11-13, and the latter
  145.50.60.21.-23. They are connected to a
  switched hub on ports 2 through 7. the NICs
  (network interface cards) associated with ports
  are made by Cabletron and their MAC addresses
  start with the vendors global prefix 00-00-1D
  (hexadecimal notation) and end with
  11,12,13,21,22, and 23 (same as the fourth
  decimal position of IP addresses).
• 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.

4

• b)The workstation 23 is moved from networking lab
  to NM lab. The appropriate parameter changes in
  the hub and the workstation.
• 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.

5

• Q5.A new LEC is added to an ATM LAN containing
  other LECs, LES, LECS, a BUS, and a ATM switch.
  Starting from the initial conditions, six steps
  (or phases) are required to make the new LEC part
  of the ELAN network (1) LEC connection, (2)
  configurations, (3) join, (4) initial
  registration, (5) BUS connection, and (6)
  operation. Describe these steps.
•  
• 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

6

• Q7.A network manager discovers that a network
  component is performing poorly and issues on
  order to the technician to replace it. Which MIB
  group contains this information for the
  technician to find out the physical location of
  the component?
•  
• 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 vendors 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.

7

• Q10.In a ballroom dance class, the instructor
  asks the guests to form couples made up of a male
  and a female order (order does not matter) for a
  dance. Write an ASN.1 module for dance Group with
  data type Dance Group that is composed of data
  type couple couple is constructed using male and
  female.
•  
• 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.
•  
•  

8

• Q12.You are asked to do a study of the use
  pattern of 24,000 workstations in an academic
  institution. Make the following assumptions. You
  ping each station periodically. The message size
  in both directions is 128 bytes long. The NMS
  that you using to do the study is on a 10-Mbps
  LAN, which functions at 30 percent efficiency.
  What would be the frequency of your ping if you
  were not to exceed 5 percent overhead?
• 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 dont have the
  time or patience to read longer reports).

9

• Global Study Solutions
• Dr. Aravind Banakar
• aravind.banakar_at_gmail.com
• www.mbacasestudyanswers.com
• 9901366442 9902787224