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When an engineer captures traffic on a Cisco FTD to troubleshoot a connectivity problem, they receive a large amount of output data in the GUI tool. The engineer found that viewing the Captures this way is time-consuming and difficult lo son and filter. Which file type must the engineer export the data in so that it can be reviewed using a tool built for this type of analysis?

A.

NetFlow v9

Answers
A.

NetFlow v9

B.

PCAP

Answers
B.

PCAP

C.

NetFlow v5

Answers
C.

NetFlow v5

D.

IPFIX

Answers
D.

IPFIX

Suggested answer: B

Explanation:

When capturing traffic on a Cisco FTD device to troubleshoot a connectivity problem, a file type that can be exported for reviewing using a tool built for this type of analysis is PCAP.PCAP stands for Packet Capture and it is a file format used to store network packet data captured from a network interface8.PCAP files contain the raw data of network packets, including the headers and payloads of each packet8.

PCAP files are widely used in network analysis and troubleshooting tasks.They enable network administrators, analysts, and researchers to inspect and analyze network traffic for various purposes, such as diagnosing network issues, detecting malicious activity, measuring network performance, and understanding network protocols8.PCAP files can be read by applications that understand that format, such as Wireshark, tcpdump, CA NetMaster, or Microsoft Network Monitor8.

The other options are incorrect because:

NetFlow v9 is not a file type, but a protocol for collecting and exporting information about network flows.A network flow is a sequence of packets that share common attributes such as source and destination IP addresses, ports, and protocols9.NetFlow v9 records contain summary information about network flows, such as start and end times, byte counts, packet counts, and so on9. NetFlow v9 records do not contain the raw data of network packets.

NetFlow v5 is not a file type, but an earlier version of the NetFlow protocol for collecting and exporting information about network flows.NetFlow v5 records contain similar information as NetFlow v9 records, but with fewer fields and less flexibility10. NetFlow v5 records do not contain the raw data of network packets.

IPFIX is not a file type, but a protocol for collecting and exporting information about network flows.IPFIX stands for IP Flow Information Export and it is based on NetFlow v9, but with some extensions and improvements11.IPFIX records contain similar information as NetFlow v9 records, but with more fields and more flexibility11. IPFIX records do not contain the raw data of network packets.

asked 07/10/2024
Kevin Langthorne
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