Cisco 300-710 Practice Test - Questions Answers, Page 27

An EtherChannel interface is a logical interface that consists of a bundle of individual Ethernet links that act as a single network link.An EtherChannel interface can increase the bandwidth and reliability of a network connection5.

On a Cisco Firepower 9300 appliance registered with an FMC for high availability, the network administrator must create the EtherChannel interface on the FXOS CLI.The FXOS is the operating system that runs on the Firepower 9300 chassis and provides hardware management functions such as interface configuration, power supply status, fan speed control, and so on6.

To create an EtherChannel interface on the FXOS CLI, the network administrator can follow these steps5:

Connect to the FXOS CLI using SSH or console.

Enter scope eth-uplink command to enter Ethernet uplink mode.

Enter create port-channel command to create an EtherChannel interface.

Enter a port-channel ID (1-48) and a mode (on or active) for the EtherChannel interface.

Enter add interface command to add physical interfaces to the EtherChannel interface.

Enter one or more interface IDs (for example, 1/1) for the physical interfaces.

Enter commit-buffer command to save the changes.

The other options are incorrect because:

The FMC CLI does not provide any commands to create an EtherChannel interface on a Firepower 9300 appliance.The FMC CLI is mainly used for managing FMC settings such as backup, restore, upgrade, troubleshoot, and so on7.

The FTD CLI does not provide any commands to create an EtherChannel interface on a Firepower 9300 appliance.The FTD CLI is mainly used for managing FTD settings such as routing, NAT, VPN, access control, and so on8.

The FMC GUI does not provide any options to create an EtherChannel interface on a Firepower 9300 appliance.The FMC GUI is mainly used for managing FTD policies such as access control, intrusion, file, malware, and so on9.

Transparent mode allows the FTD device to act as a ''bump in the wire'' that does not affect the IP addressing of the network. The end user workstations will not need any changes to their configuration, as they will still receive an IP address from the same DHCP server.However, the FTD device must allow DHCP traffic in the access control policies, otherwise it will block the DHCP requests and replies1

When an FTD device that is managed by FDM is registered to FMC, the existing configuration is automatically converted and imported into FMC. The FMC then pushes the configuration back to the device. This process preserves most of the FDM configuration, except for some features that are not supported by FMC, such as VPN wizards and certificates.

When reconfiguring an existing Cisco FTD from transparent mode to routed mode, an additional action that must be taken to maintain communication between the two network segments is to update the IP addressing so that each segment is a unique IP subnet. This is because in routed mode, the FTD device acts as a router hop in the network and requires each interface to be on a different subnet.In transparent mode, the FTD device acts as a layer 2 firewall and does not require different subnets for each interface1.

The other options are incorrect because:

Configuring a NAT rule so that traffic between the segments is exempt from NAT is not necessary to maintain communication between the two network segments. NAT is used to translate IP addresses between different networks, but it does not affect the routing of packets.Moreover, NAT is optional in routed mode and can be disabled if not needed2.

Deploying inbound ACLs on each interface to allow traffic between the segments is not required to maintain communication between the two network segments. ACLs are used to control access to network resources based on source and destination addresses, protocols, and ports. They do not affect the routing of packets.Furthermore, ACLs are optional in routed mode and can be configured as needed3.

Assigning a unique VLAN ID for the interface in each segment is not relevant to maintain communication between the two network segments. VLANs are used to create logical groups of hosts that share the same broadcast domain, regardless of their physical location or connection. They do not affect the routing of packets.Besides, VLANs are not supported in routed mode and can only be used in transparent mode4.

A low-impact attack indicates that the host is not vulnerable to those attacks.A low-impact attack is an attack that does not exploit any known vulnerability on the target host or does not match any signature or anomaly rule on the FTD device5. A low-impact attack does not mean that the attack is not dangerous to the network or that the host is not within the administrator's environment. It simply means that the attack did not succeed in compromising or affecting the host.

The other options are incorrect because:

All attacks are not listed as low until manually categorized.The FTD device automatically assigns an impact level to each attack based on various factors, such as vulnerability information, threat score, and confidence rating5. The impact level can be high, medium, or low, depending on how likely and how severe the attack is.

The attacks are not necessarily harmless to the network.A low-impact attack may still cause some damage or disruption to the network, such as consuming bandwidth, generating noise, or distracting attention from other attacks6.A low-impact attack may also indicate that the attacker is probing or scanning the network for potential vulnerabilities or weaknesses7.

The host is not necessarily outside the administrator's environment. A low-impact attack can target any host on the network, regardless of its location or ownership. A low-impact attack does not imply that the host is external or irrelevant to the administrator's environment.

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.

Fallthrough to interface PAT is a feature that allows the dynamic NAT configuration to use the interface IP address as a last resort when the NAT pool is exhausted. This way, more users can access the internet without running out of resources.To enable this feature, the engineer must check the Enable PAT Fallback check box on the Advanced tab of the NAT rule editor1

The content keyword is used to specify a string or pattern to search for in the payload or stream of a packet. The string must be enclosed in quotation marks and can use modifiers such as nocase, depth, offset, and so on. The string can also use hexadecimal notation by using a pipe symbol (|) before and after the hexadecimal characters. For example, content:'|45 5* 26 27 4 0A|' will match any payload or stream that contains the hexadecimal bytes 45 526 27 4 0A followed by any number of bytes2

The Analysis > Hosts > Vulnerabilities page in Cisco FMC displays information about the hosts on the network and their associated vulnerabilities. The administrator can filter the hosts by impact level, which indicates how likely an attack is to succeed against a host. An impact level of 2 means that the host was attacked and is potentially vulnerable, but no exploit was confirmed. The administrator can click on a host to view more details, such as its IP address, operating system, applications, protocols, and intrusion events.The administrator can also view the details of each vulnerability, such as its CVE ID, description, severity, and recommended actions3