Network Operations Flashcards
What are log reviews?
Log reviews involve regularly examining log files from network devices to monitor and diagnose network issues, ensuring security and performance.
What are traffic logs?
Traffic logs record data about network traffic, such as source and destination IP addresses, port numbers, and protocols used, to analyze network usage and detect anomalies.
What are audit logs?
Audit logs capture detailed records of system activities and changes, providing a trail for investigating security incidents and ensuring compliance with policies.
What is Syslog?
Syslog is a standard protocol used to send system log or event messages to a centralized server for storage and analysis.
What are logging levels/severity levels?
Logging levels or severity levels categorize the importance of log messages, ranging from debug and informational to warning, error, and critical, to prioritize attention.
What is the link state (up/down) in interface statistics?
Link state indicates whether a network interface is operational (up) or not (down), crucial for diagnosing connectivity issues.
What is speed/duplex in interface statistics?
Speed refers to the data rate of a network interface, while duplex mode indicates whether the connection can send and receive data simultaneously (full-duplex) or not (half-duplex).
What are send/receive traffic statistics?
Send/receive traffic statistics measure the amount of data transmitted and received by a network interface, useful for monitoring bandwidth usage and performance.
What are Cyclic Redundancy Checks (CRCs)?
Cyclic Redundancy Checks (CRCs) are error-detecting codes used to check the integrity of data in network transmissions.
What are protocol packet and byte counts?
Protocol packet and byte counts track the number and size of packets sent and received, providing insight into network traffic patterns.
What are CRC errors?
CRC errors occur when the data integrity check fails, indicating possible issues with the network connection or cable.
What are giants in network interfaces?
Giants are network packets that exceed the maximum allowed size, often caused by misconfiguration or network errors.
What are runts in network interfaces?
Runts are network packets that are smaller than the minimum allowed size, often caused by collisions or network errors.
What are encapsulation errors?
Encapsulation errors occur when there is a problem with the encapsulation process, affecting the proper delivery of network packets.
What environmental factors and sensors should be monitored?
Environmental factors and sensors monitor temperature, humidity, electrical conditions, and flooding to ensure optimal operating conditions for network devices.
