chapter 8

Question 1

NTP?

Answer 1

NTP: network time protocol - used to synchronize time across devices. helpful for log file comparison.

Question 2

OOB?

Answer 2

OOB: out of band- network.

Question 3

SNMP?

Answer 3

SNMP: Simple Network Managment Protocol

Question 4

how does SNMP work?

Answer 4

simple Network Managment Protocol works by the use of a SNMP manager device (application layer) and AGENTS (nodes) “set and get” commands are used to collect or set commands/info. port 162 is used (UDP)

Question 5

MIB?

Answer 5

MIB: managment information base. storage of NTP and SNMP errors/ data within the node/device. local storage.

Question 6

NMS?

Answer 6

NMS: Network Management system: network admins use computers with software that communicated with agents (nodes, network devices) and those agent MIB (managment info base) tables to get information about erors, cpu cycles, etc.

Question 7

NMS? graphs used for?

Answer 7

NMS Network Management systems communicate with agents and gather cpu load, error info ,etc. to then provide graphs/ charts for network admins. helpful for admins to determine needed upgrades or problems.

Question 8

what does netflow do?

Answer 8

is a cisco technology used by network IT to, collect ip data from networks. works better for ip data than SNMP. *targets specific statistical information.

Question 9

ingress?

Answer 9

incoming packets on an interface

Question 10

egress?

Answer 10

outgoing packets on an interface