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28 Cards in this Set
- Front
- Back
What are some drawbacks to ICMP piinging as a NM tool?
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Unreliable delivery of packets, need for polling, limited info derived from responses.
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What is MIB?
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A hierarchical, strctured format that defines the NM information available for the network devices.
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What are the 2 parts of the labeled node?
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An object identifier (OID), short text description
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What are the two types of nodes that make up the MIB tree?
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Labeled nodes may have subordinate labeled nodes and/or leaf nodes, leaf nodes will never have subordinate. Labeled-word notation(understand what label is pointed to), Leaf-deciman notation(how the NMS tracks info)
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What are some examples of what a node in SNMP can rep?
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any device (client, user, pc, server, printer) attached to a data network
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Briefly describe the two categories of SNMP
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Manager- A computer used to run one or more NMS applications, Agent-responsible for monitoring, collecting, and reporting mgmt data to the mgmt system.
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What does the GET operation do?
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retrieves the value of one specific instance of management information
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what does the set operation do?
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modifies the value of one or more instances of management information. Can create new instances and delete existing instances of management information
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What is a trap?
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Trap is the 4th operation message. unsolicited message from an agent to the manager, does not have a corresponding request message
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What are community names?
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each snmp community is a group containing one agent and one mgmt system. The logical name assigned to such a group we call the community name
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Describe each of the two types of community names
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Read-community that is read only, Write-community that allows the manager to remotely change configuration information from the mgmt station or server.
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What do the two hierarchies provided by the CIM describe?
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Physical hierarchies describe real world components, logical hierarchies are visible through network protocols
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What are the three methods for creating a representation of a network topology within the domain managers repository?
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Auto-discovery, manual discovery, topology import
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What are the 3 main components of SMARTS?
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Domain manager, broker, clients
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List the 5 different map types that can be accessed through the map console
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physical connectivity, ip network connectivity, ip network membership, vlan connectivity, vlan membership
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What is the primary console in smarts and what does it display?
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Monitoring console, it is used to display the results of the domain manager’s correlation alarms.
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Briefly describe the differences between the two types of polling used by smarts to gather information
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fault and performance data is collected using SNMP while device connectivity is monitored using CMP
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What two factors determine if a SMARTS map is opened with r/w or r/o access?
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only one user can have a specific map opened with r/w access at any one time. You can use file system (FAT or NTFS) to purposely allow specific users to r/w or r/o access to a map by setting permission to the files
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What are the 3 types of notifications used in smarts
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problem, compound event, symptomatic event
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List eight of the objects that can be tracked through the windows perf monitor
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browser, cache, icmp, ip, memory, NIC, paging file, physical disk, processor, tcp, thread, telephony
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What are the primary capabilities provided by a protocol analyzer?
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Digital network diagnostics and developing communications software
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what is the difference between a protocol analyzer nic and other nics?
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one caps all frames, the other caps only broadcasts and frames with its ip addy
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what is the minimum amount of time recommended to capture network info to establish a baseline?
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24 hours
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What function of the protocol analyzer excludes specific types of frames?
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The capture filters option allows you to display and store only the data you are interested in analyzing. You may also use a capture filte to exclude specific types of frames.
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List 4 types of specific occurrences that can be displayed by counters in the protocol analyzer
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packets transmitted, crc errors, under/oversized packets, arp requests, data frame collisions, bit errors
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On the protocol analyzer, what menu is best used to report errors that occur at the physical layer such as bad fcs, short frames, and jabbers?
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MAC node statistics
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On the protocol analyzer, what kind of information does the connection statistics menu provide?
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information concerning the bandwidth utilization and the number of connections that are related to specific nodes
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what are the 3 types of active tests conducted with a prot analyzer?
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ping, traceroute, traffic generator
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