Netmg Past MCQ

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Author:
kirin
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166822
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Netmg Past MCQ
Updated:
2012-08-21 10:48:15
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netmg past mcq exam
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Network Management Past Year MCQs
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  1. Which will set up central log system error message?
    Syslog server
  2. Which protocol allows access the device over the internet?
    SSH
  3. Which requires SNMP RW access?
    Shutdown serial interface of a router
  4. Meaning of ACL fa0/0 connected to Net A of the router:
    a-l 20 permit 10.32.41.0 0.0.0.255
    a-l 20 deny any
    int fa0/0
     ip access-group 20 in
    all packets from source 10.32.41.100 in Net A will be forwarded.
  5. Meaning: aaa authen login linevty group tacacs+ none
    if server failed, there is no means of access authentication
  6. Which wildcard tests using 16-bit (/16) subnet mask?
    0.0.255.255
  7. R1# clock is synced, stratum 5, ref is 192.168.96.5.
    What is stratum of ref IP?
    4
  8. What is network node role?
    perform traffic classification
  9. Where is DSCP located in a protocol?
    IP Header
  10. Which uses guaranted min BW?
    Class-based weighted fair queueing (CBWFQ)
  11. Which drops packets before buffer is full?
    Active queue (WRED)
  12. ISO's five functional areas of NM
    Security Management

    Performance Management

    Configuration Management

    Accounting Management

    Fault Management
  13. Alarms and Audit trails for access to network
    Part of security management
  14. What defines the general framework of MIB?
    SMI (Structure of Management Information)
  15. A command to enable SNMP for monitor/control.
    snmp-server community secret rw
  16. Vendor-specific object id in SNMP is located in tree
    Private tree structure
  17. Two main softwarre of NMS
    Platform and Applications
  18. Good practice of IP address assignment
    Use static for router, network printer and server. Dynamic for else
  19. Which controls the running configuration of all devices?
    Configuration version control.
  20. What is PQ?
    Packets in higher queue are aleays served first. No chance for lower queue if packets are in high queue waiting.
  21. Scheduling Process?
    Determine the order that packets are forwarded.
  22. What is the method of unconditional drops when the queue is full?
    Tail drop in best effort.
  23. A machine running NTP chooses its time with..
    Low stratum number
  24. Syslog descriptions
    Send event notification messages, for TCP/IP network transmit without receiver side configurations.
  25. Configuration Management (CM) is important because...
    Tracks changes in the network.
  26. RADIUS & TACACS+..
    Radius for combined AA and Tacacs+ for separate AA
  27. Avaliability 99.99% then downtime in hours
    0.876 hrs
  28. RMON1 statistics are based..
    Data Link Layer
  29. In RMON, agents communicate to central station with..
    SNMP
  30. Which delay is the function of distance and media but not of the bandwidth?
    Propagation delay.
  31. Which delay is the time the packet waits in a buffer for its turn to be transmitted?
    Queuing delay
  32. ___ is the time it takes for a device to clock a packet at the given output rate
    Serialization delay
  33. Serialization delay by 1500 bytes in 512 kbps link
    23.4 msec
  34. Packet Jitters
    Variation in packet delay
  35. IP network by default
    Best effort service with tail drop
  36. Which is best for VoIP?
    LLQ
  37. Recommend DSCP value for AF43?
    38
  38. What is Accounting Management (AM)?
    Gathering network utilization data, setting quotas for billing.
  39. What patterns are observed when a problem occurs for network utilization?
    Over & under utilization and sudden change in utilization.
  40. Packet jitter refers to?
    Variation in packet delay
  41. State two objectives of NMP
    Defines common data types and parameters

    Easy retrieval information

    Change capabilities and security features

    Management works done remotely
  42. List steps to choose a NMS in order
    Inventory

    Prioritize

    Functional area setting

    Survey applications

    Choose NMP
  43. Describe two different scenarios where events log
    When system did not receive a response from a device polled.

    System received an asynchronous message from a device.
  44. What are advantages and disadvantages of Centralized Architecture?
    Simple easy setup, single location for all information and network management application.

    Single point of failure, high management traffic in central.
  45. Identify key components of SNMP
    SNMP manager

    SNMP agents with MIB

    SNMP messenger
  46. What is QoS?
    Ability to provide improved service to select a network traffic over various technologies
  47. What is Integrated Services (IS)?
    An application requests for a specific kind of service from the network before it sends the data.
  48. What is Differentialed Services (DS)?
    Enable scalable service discrimination in the Internet without the need for per-flow state and signalling at every hop.
  49. In DS codepoint AF31, what does '3' mean?
    Class selector
  50. What is marking?
    Setting the DS code point in a packet based on defined rules.
  51. What is the goal of SM?
    To control access to network resources according security policy.
  52. State 2 best practices to control and monitor or access to network.
    Restrict access to authorized users.

    Change password on a router.

    Software revision is in compliance with security requirements.

    Review changes of possible impact on the overall security of the network.
  53. Describe Utilization, Accuracy, Avaliability, Response Time.
    Utilization is to measure the use of a particular resource over time.

    Accuracy is the measure of interface traffic that does not result in error and can be expressed in terms of a percentage that compares the success rate to total packet rate over a period of time.

    Availability is the percentage of time for which a network system is available to a user.

    Response time is the total time required for traffic to travel between 2 points.
  54. State limitation of using ICMP to measure Avaliability and Response Time.
    Only measure avaliability of network but NOT the avaliability of the applications running in the network.

    It does NOT accurately reflect the user's perception of response time.
  55. Preferred method of monitoring tavaliability over 24*7 period.
    Use active measurement which involves simulating transaction designated machine at defined interval.
  56. What is capacity planning?
    To determine the likely future network response requirements.
  57. In DS, how a packet marked?
    Use IP precedence or DSCP code in the part of TOS of IP header to mark a IP packet. Total 64 classes total defined.
  58. What is classification?
    Identify packets to be a certain class based on one or more field packets.
  59. Shaping/Policing
    Process of delaying packets within a traffic stream or discarding packets within a traffic stream to cause it to conform to a predefined traffic policy
  60. What is Expedited Forwarding (EF), Assured Forwarding (AF) and Class-Selector (CS)?
    EF provides a low loss, low latency, low jitter, assured bandwidth, end-to-end service.

    AF provides four classes, each with three drop precedence levels.

    CS preserve backward compatibility with any precedence scheme currently in use on the network.
  61. What is banner?
    To warn off unauthorised access.
  62. What is interface descriptor?
    To help admin to tell more info, understand the scope of problems during troubleshooting.
  63. Describe Jitter and packet loss:
    Jitter: delay due to buffering problems

    Packet loss: lost during transmission in a network
  64. What is tail drop?
    Drop packets when the queue is fill
  65. What is active queue?
    Drop packets before the queue is full in advance.

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