Network Defense Module 10.4.2 Network Security Data Quiz Questions Exam Answers
1. What is a feature of the tcpdump tool?
- It records metadata about packet flows.
- It provides real-time reporting and long-term analysis of security events.
- It uses agents to submit host logs to centralized management servers.
- It can display packet captures in real time or write them to a file.
Explanation: The tcpdump command line tool is a packet analyzer that captures detailed packet protocol and content data. It can display packet captures in real time or write them to a file.
2. A NIDS/NIPS has identified a threat. Which type of security data will be generated and sent to a logging device?
- alert
- transaction
- statistical
- session
Explanation: Alert data is generated by IPS or IDS devices in response to traffic that violates a rule or matches the signature of a known security threat.
3. Which statement describes the tcpdump tool?
- It is used to control multiple TCP-based applications.
- It is a command-line packet analyzer.
- It accepts and analyzes data captured by Wireshark.
- It can be used to analyze network log data in order to describe and predict network behavior.
Explanation: The tcpdump command-line tool is a popular packet analyzer. It can display packet captures in real time or write packet captures to a file.
4. What are two of the 5-tuples? (Choose two.)
- protocol
- ACL
- IPS
- IDS
- source port
Explanation: The components of a 5-tuple include a source IP address and port number, destination IP address and port number, and the protocol in use.
5. Which type of security data can be used to describe or predict network behavior?
- statistical
- alert
- transaction
- session
Explanation: Statistical data is created through the analysis of other forms of network data. Conclusions from these analyses can be used to describe or predict network behavior.
6. Which Windows log records events related to login attempts and operations related to file or object access?
- setup logs
- system logs
- application logs
- security logs
Explanation: On a Windows host, security logs record events related to security, such as login attempts and operations related to file or object management and access.
7. Which type of data is used by Cisco Cognitive Intelligence to find malicious activity that has bypassed security controls, or entered through unmonitored channels, and is operating inside an enterprise network?
- session
- statistical
- alert
- transaction
Explanation: Cisco Cognitive Intelligence utilizes statistical data for statistical analysis in order to find malicious activity that has bypassed security controls, or entered through unmonitored channels (including removable media), and is operating inside the network of an organization.
8. Which Windows host log event type describes the successful operation of an application, driver, or service?
- warning
- error
- success audit
- information
Explanation: Various Windows host logs can have different event types. The information event type records an event that describes the successful operation of an application, driver, or service.
9. What are two popular SIEM platforms? (Choose two.)
- NetFlow
- tcpdump
- Splunk
- Security Onion with ELK
- Cisco Umbrella
Explanation: Security Information and Event Management (SIEM) is a technology that provides real-time reporting and long-term analysis of security events. Two SIEM platforms used by organizations are Splunk and Security Onion with ELK.
10. Which Windows tool can be used to review host logs?
- Event Viewer
- Services
- Task Manager
- Device Manager
Explanation: Event Viewer in Windows can be used to review entries in various logs.
11. Which statement describes an operational characteristic of NetFlow?
- NetFlow captures the entire contents of a packet.
- NetFlow flow records can be viewed by the tcpdump tool.
- NetFlow collects basic information about the packet flow, not the flow data itself.
- NetFlow can provide services for user access control.
Explanation: NetFlow does not capture the entire contents of a packet. Instead, NetFlow collects metadata, or data about the flow, not the flow data itself. NetFlow information can be viewed with tools such as nfdump and FlowViewer.
12. In a Cisco AVC system, in which module is NBAR2 deployed?
- Application Recognition
- Metrics Collection
- Control
- Management and Reporting
Explanation: AVC uses Cisco Next Generation Network-Based Application Recognition (NBAR2) to discover and classify the applications in use on the network.