3.1

Question 1

Log levels

Answer 1

Emergency
Alert
Critical
Error
Warning
Notice
Info
Debug

Question 2

Emergency log level

Answer 2

Mean System unusable, needs immediate attention,

Question 3

Alert log level

Answer 3

Means system in process of going down, needs immediate action, ex server hardware failure

Question 4

Critical

Answer 4

Means system could fail soon, needs actual asap, ex: memory leak

Question 5

Error

Answer 5

Something has failed, investigate cause and fix if needed ex: failed logon attempt

Question 6

Warning

Answer 6

Means something could fail soon , needs monitoring to watch status ex: high memory usage

Question 7

Notice

Answer 7

Means changes to systems were made and need to be made, needs approval , ex: service restarts

Question 8

Informational

Answer 8

Normal operational logs no action needed

Question 9

Debug

Answer 9

Logs used for in-depth troubleshooting

Question 10

Traffic logs

Answer 10

Logs create for packets coming into and going out of network device like firewall

Question 11

Network device logs

Answer 11

Logs captured by network devices(firewalls, switches, etc)after an event takes place

Question 12

Audit logs

Answer 12

Logs created by users interacting with the system. Ex : failed logon attempts

Question 13

Syslog

Answer 13

Protocol allowing for standardization of logs so they can be transferred to a central server

Question 14

CRC error

Answer 14

Errors caused by a failed CRC (packet received with wrong checksum) usally caused by. Fault cable or emi

Question 15

Giant

Answer 15

Packets over 1518 bytes, misconceived net device or software bug causes it

Question 16

Runts

Answer 16

Packet under 64bytes usally caused by a Collison

Question 17

Encapsulation errors

Answer 17

Occurs when there is a corruption or mismatch in the encapsulation process, usally caused by hardware issues