Flashcards in chapter 18 Deck (24):
what is a WiFi Analyzer?
WiFi Analyzer is a lightweight application that analyzes the available WiFi networks.it help find the channels in use, the amount of clients and bandwidth used, that means It helps you to evaluate the signal interference of existing networks and find out the less crowded channel.
to do a wireless survey of the floor or building where you want to install your network, what do you need to use for that?
wireless survey tool.
what is a Network monitoring?
Network monitoring is the use of a system that constantly monitors a computer network for slow or failing components and that notifies the network administrator,
some of the network monitoring tools are software additions that run on server OS, and other are a stand alone hardware devices.
network monitoring is also known as _______
Microsoft has a network monitor that can be used to capture network traffic, what is its current version and which windows supports this version?
it is version 3.4 and it supported by windows vista, 7/8, server 2003/ 2008/2012
SNMP stand for what?
Simple Network Management Protocol
what does SNMP do?
SNMP is an Application layer protocol that provides a message format for agents on a variety of devices to communicate with network management stations NMSs.
SNMP is available in three versions, what are they?
SNMP version 1 (SNMPv1)
SNMP version 2 (SNMPv2)
SNMP version 3 (SNMPv3)
SNMP version 1 (SNMPv1):
supports plain text authentication with community strings and uses only UDP.
SNMP version 2 (SNMPv2):
-supports plain text authentication with MD5 or SHA with no encryption.
-it is not more secure then Version 1
-uses UDP and TCP.
SNMP version 3 (SNMPv3):
-supports plain text authentication with MD5 or SHA, and provide encryption.
what is Syslog?
Syslog is a way for network devices to send event messages to a logging server – usually known as a Syslog server.
syslog allows as to display , sort and search messages.
what are the 4 popular ways to gather messages from Cisco devices using syslog?
logging buffer ( on by default )
Console line ( on by default)
the system message format that the router would send to the Syslog server, can be broken down into 6 part, what are they?
-seq no: it is not there by default.
-timestamp: time and date of the message or event.
-facility: The facility to which the message refers.
-Severity: a single digit code from 0 to 7 that indicates the severity of the message.
-MNEMONIC: text that describes the message.
-description:text contains detailed information of the event.
severity 0 is an emergency, that mean _____
the system is unusable.
severity 1 is Alert, that mean _____
immediate action is needed.
severity 2 is critical, that mean _____
severity 3 is Error, that mean _____
severity 4 is warning, that mean _____
severity 5 is notification, that mean _____
Normal but significant condition.
severity 6 is information, that mean _____
normal information message.
severity 7 is debugging, that mean _____
if we configured severity 0, the only message that is going to display is emergency level. T/F