Shared Flashcard Set

Details

SNMP
N/A
33
Computer Science
Undergraduate 4
05/07/2012

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Cards

Term
List six network management tasks?
Definition
Failure of an interface card
Host monitoring
Monitoring traffic
Detecting rapid changes in routing tables
Monitoring for SLAs
Intrusion detection
Term
What three issues does SNMP attempt to address?
Definition
What / how to monitor
What info is exchanged
How is the info exchanged
Term
How would an ideal management tool check status?
Definition
Periodically
Term
How would alarms be triggered in ideal management tool ?
Definition
Automatically
Term
What should an ideal management tool perform?
Definition
Hardware failure
Host monitoring
Traffic monitoring
Routing monitoring
SLA monitoring
Intrusion detection
Term
What three issues does RFC 3410 describe relating to SNMP?
Definition
What / how to monitor
What information is exchanged
How information is exchanged
Term
What should SNMP monitor?
Definition
Any device
Term
How should SNMP monitor
Definition
Run a service on the monitored device
Term
When the SNMP service is running on a monitored device, what should it (be able) to do
Definition
Access status and performance of the device
Communicate with another remote entity
Term
What is SNMP NOT
Definition
Intrusive monitoring (no probes sent)
Non-intrusive monitoring (nothing is captured / interpreted)
Term
What is the master agent?
Definition
Something installed on each monitored / managed device which collects info about the device
Term
What is the managing entity?
Definition
Something installed on the monitoring / management device to poll to the master agent and update info on monitored devices
Term
What happens to the data in SNMP?
Definition
Collected and stored on the master agent, organised and collected by the managing entity
Term
What protocol is used for SNMP?
Definition
The SNMP protocol
Term
What does each managed device consist of?
Definition
One or more managed objects
Term
What does each managed object have?
Definition
A management information base (MIB)
Term
How does SNMP organise / exchange information
Definition
in a tree structure
Term
Vendors can add their own branches (objects) to the MIB tree
Definition
That is correct
Term
What structure does MIB have?
Definition
A tree
Term
What three types of SNMP messages are there?
Definition
REad
Write
TRap
Term
What does TRAP message mean / do?
Definition
Allows managed device to issue alarms to management station
Term
What protocol does SNMP run on?
Definition
UDP
Term
Why does SNMP run on UDP/
Definition
Network friend and no overheads
Term
What port does SNMP run on (for read/write and traps)
Definition
161 (read/write)
162 (traps)
Term
What sec is on v1 / v2 of SNMP?
Definition
None
Term
What sec is in v3?
Definition
Encrypted auth

Allowed enabled setPDUFunctionality (whatever that is)
Term
What is OSKAAAAAAAAAAAAAs surname!!!
Definition
WRONG! ITS McVities!
Term
What does SNMP provide?
Definition
Lots of raw data
Values for SNMP variables - traffic, cpu, memory, hdd etc
Term
What does SNMP not provide
Definition
Meaningful / Automatic
Term
as a result of SNmP becoming large over time and making data retrieval inefficient. What solution is there?
Definition
Round robin database
Term
how does round robin database work?
Definition
establish a relevant time period, remove data beyond time period and aggregate older data so it occupies less time
Term
When you're blowing into a bottle top, does the note get higher or lower as the size of the top increases?
Definition
Who the fuck cares
Term
Imagine you are doing education studies. You are asked to monitor a network by your supervisor. What do you do?
Definition
Get someone who did a real degree to do it for you, but take all the credit and relay some bullshit about how stressful teaching is(nt)
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