4_3_4 Section 4 – Operations and Incident Response - 4.3 – Investigations- Log Files
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Questions and Answers

What is the primary function of a Security Information and Event Manager (SIEM)?

  • To configure Syslog options on devices
  • To generate log entries on Linux devices
  • To consolidate logs from different devices (correct)
  • To process log information from a single device

    • What is the purpose of a facility code in a Syslog log entry?

  • To identify the program that created the log entry (correct)
  • To specify the severity level of the log entry
  • To determine the log entry's destination
  • To specify the type of device that generated the log entry

    • Which of the following is NOT a popular syslog daemon for Linux devices?

  • rsyslog
  • NXLog
  • syslog-ng
  • syslog (correct)

    • What is the benefit of using a SIEM to consolidate log files from different devices?

    <p>To make it easier to search and analyze log data</p> Signup and view all the answers

    What is the purpose of a severity level in a Syslog log entry?

    <p>To indicate the level of importance of the log entry</p> Signup and view all the answers

    What is the primary benefit of using Syslog to transfer log files?

    <p>To allow for centralized log collection and consolidation</p> Signup and view all the answers

    What is the primary purpose of the journalctl utility in Linux?

    <p>To query the system journal for log information</p> Signup and view all the answers

    What type of logs are specific to the operating system itself?

    <p>System logs</p> Signup and view all the answers

    What is the primary reason for monitoring bandwidth usage?

    <p>To qualify available bandwidth for applications</p> Signup and view all the answers

    What protocol is used for bandwidth monitoring?

    <p>All of the above</p> Signup and view all the answers

    What type of information is contained in the headers of an email message?

    <p>All of the above</p> Signup and view all the answers

    What is the purpose of metadata in files?

    <p>To describe other types of data</p> Signup and view all the answers

    What type of information can be stored in the metadata of a picture taken on a mobile device?

    <p>All of the above</p> Signup and view all the answers

    What type of information is transferred in the metadata of a web browser connection?

    <p>All of the above</p> Signup and view all the answers

    What type of information can be found in the metadata of a Microsoft Office document?

    <p>All of the above</p> Signup and view all the answers

    What format are Linux system logs stored in?

    <p>Binary format</p> Signup and view all the answers

    What can you see in the details of an email message?

    <p>The return path and other validation details</p> Signup and view all the answers

    What is the primary function of NetFlow?

    <p>To gather network statistics from switches and routers</p> Signup and view all the answers

    What is the architecture of NetFlow?

    <p>Probe and collector are separated</p> Signup and view all the answers

    What is the primary purpose of protocol analyzers?

    <p>To troubleshoot complex application problems</p> Signup and view all the answers

    What is IPFIX?

    <p>A newer version of NetFlow</p> Signup and view all the answers

    Why is sFlow used?

    <p>To reduce the resources required for network traffic analysis</p> Signup and view all the answers

    What type of networks can protocol analyzers be used on?

    <p>Both wireless and wired networks, as well as wide area networks</p> Signup and view all the answers

    What can you infer from sFlow devices?

    <p>Relatively accurate statistics from sampled traffic</p> Signup and view all the answers

    What feature of protocol analyzers allows users to view specific information?

    <p>Packet filtering</p> Signup and view all the answers

    What is the purpose of a protocol analyzer?

    <p>To get detailed information of network traffic</p> Signup and view all the answers

    What information is provided by the protocol decodes on a protocol analyzer?

    <p>A plain English breakdown of network traffic</p> Signup and view all the answers

    What is shown in the NetFlow collector front end?

    <p>Top 10 conversations and top 10 endpoints by bandwidth</p> Signup and view all the answers

    What information can be seen in the packet by packet breakdown of a protocol analyzer?

    <p>Delta times, source IP addresses, source port numbers, and other information</p> Signup and view all the answers

    What is the advantage of IPFIX over NetFlow?

    <p>It provides more flexibility in data collection</p> Signup and view all the answers

    What is the benefit of using a protocol analyzer to troubleshoot network issues?

    <p>It provides a detailed breakdown of network traffic, making it easier to identify issues</p> Signup and view all the answers

    Why is NetFlow a well-established standard?

    <p>It is compatible with devices from many manufacturers</p> Signup and view all the answers

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