chapter 18 Flashcards
what is a WiFi Analyzer?
680
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?
680
wireless survey tool.
what is a Network monitoring?
683
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 _______
684
load testing
connectivity testing
throughput testing
protocol analyzer
Microsoft has a network monitor that can be used to capture network traffic, what is its current version and which windows supports this version?
684
it is version 3.4 and it supported by windows vista, 7/8, server 2003/ 2008/2012
SNMP stand for what?
684
Simple Network Management Protocol
what does SNMP do?
684
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?
685
SNMP version 1 (SNMPv1)
SNMP version 2 (SNMPv2)
SNMP version 3 (SNMPv3)
SNMP version 1 (SNMPv1):
685
supports plain text authentication with community strings and uses only UDP.
SNMP version 2 (SNMPv2):
685
- 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):
685
-supports plain text authentication with MD5 or SHA, and provide encryption.
what is Syslog?
685
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?
685
logging buffer ( on by default )
Console line ( on by default)
Terminal lines
Syslog server
the system message format that the router would send to the Syslog server, can be broken down into 6 part, what are they?
686
- 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 _____
686
the system is unusable.
