OBJ 3.1 X Flashcards
Bandwidth
Theoretical speed of data going across the network
Latency
o Time that it takes for data to reach its destination across a network
o High latency slows down overall network performance
Jitter
When a time delay in the sending of data packets over a network connection occurs
Traffic logs
Contains information about the traffic flows on the network
Traffic logs allow for investigation of any abnormalities
Audit logs
Contains a sequence of events for a particular activity
Syslog
Contains information about the operating system itself
Link state (up/down)
Communicates whether a given interface has a cable connected to it and a valid protocol to use for communication
Speed/duplex
o Full duplex occurs when devices can both communicate at the same time
o Half duplex occurs when devices can either transmit or receive, but cannot do both at the same time
Cyclic redundancy checks (CRCs)
Number of packets received that failed the cyclic redundancy checksum, or CRC check upon receipt
Giants
▪ Any Ethernet frame that exceeds the 802.3 frame size of 1518 bytes
Runts
An Ethernet frame that is less than 64 bytes in size
Baselines
▪ Set of specifications for an information system, or a configuration item within a system, that has been formally reviewed and agreed on
▪ Changes will be properly tested and approved to be part of the new
baseline
NetFlow data
▪ Defines a particular traffic flow based on the different packets that share the same characteristics
● Protocol interface
● IP version/type
● Source/destination IP
● Source/destination port
● IP service type