In Cisco IOS site-to-site IPsec VPN configurations using crypto maps, the set peer command must define the reachable, public IP address of the remote VPN gateway. The ISAKMP and IPsec security associations are negotiated with this specific address. According to the provided network topology, router R1 must establish an IPsec tunnel with router R2 across the intermediate Internet cloud. R2's external, routable interface IP address is 192.168.20.2. The current configuration on R1 mistakenly defines the peer as 10.2.0.2, which is an address residing in the private, internal subnet of Site 2. Issuing the command set peer 192.168.20.2 on R1 correctly directs the tunnel establishment messages to R2's public-facing interface, resolving the issue.

A. set peer 10.1.0.1 targets an address on R1's own internal LAN (Site 1), failing to reach the remote gateway over the Internet cloud.

C. set peer 192.168.10.1 targets R1's own external interface address. A router cannot establish a site-to-site IPsec tunnel with its own local interface as the remote peer.

D. set peer 10.2.0.1 targets an internal, non-routable private IP address in Site 2's LAN, which the Internet cloud cannot natively route to for initial tunnel establishment.

Cisco Systems, Inc. Cisco IOS Security Configuration Guide: Secure Connectivity, Release 15M&T. Section: "Configuring IPsec Network Security," Subsection: "Creating Crypto Maps." (Details the requirement that the set peer command must specify the IP address or hostname of the remote IPsec peer's terminating interface).

Cisco Systems, Inc. (n.d.). IPsec VPN Design Guide. Section: "Site-to-Site VPN Overview." (Explains the necessity of using routable WAN addresses for the establishment of IKE/IPsec tunnels across a transit network like the Internet).

Lateral movement describes the techniques attackers use to move through a network after gaining initial access to a single host. Network segmentation is a fundamental security control designed to counter this threat. By dividing the network into smaller, isolated segments (or micro-segments for individual workloads), it contains a breach within its zone of origin. All traffic attempting to cross a segment boundary must pass through a security enforcement point, such as a firewall, where it can be inspected and blocked. This directly hinders an attacker's ability to pivot from a compromised system to other critical assets within the Cisco NFV Infrastructure (NFVI).

A. Wi-Fi Protected Access: This is a security protocol for wireless (802.11) networks. It is irrelevant to preventing lateral movement within a wired and virtualized NFVI data center environment.

B. Web application firewall: A WAF protects web applications from Layer 7 attacks (e.g., SQL injection) originating from external users (north-south traffic), not internal lateral movement between servers (east-west traffic).

D. Data encryption: Encryption protects the confidentiality of data at rest and in transit. While critical, it does not prevent an attacker from compromising a host and using it to move to other systems.

1. Cisco Systems, Inc. (2016). Cisco NFV Infrastructure Security. White Paper, Page 10.

"Segmentation is a key security control to prevent lateral movement of threats within the data center. In a virtualized environment, segmentation can be implemented at a very granular level, a concept known as microsegmentation. With microsegmentation, security policies can be applied between individual workloads..." This document directly links segmentation and micro-segmentation to the prevention of lateral movement within an NFVI context.

2. Cisco Systems, Inc. (2017). SAFE Reference Guide. Cisco Validated Design (CVD), Page 11.

In the "Threats" section, under "Malware," it states: "Once inside, it can propagate through lateral movement... The Places in the Network (PINs) are segmented from each other to limit the scope of a breach." This establishes segmentation as a core SAFE architecture principle for limiting lateral movement.

3. Gill, S., & Tredan, G. (2020). Security for Virtualized Networks. In Network and System Security (pp. 1-15). Springer, Cham. DOI: https://doi.org/10.1007/978-3-030-64302-01

This academic publication discusses security in virtualized environments, stating, "Micro-segmentation is a security technique that enables fine-grained security policies to be assigned to individual workloads... This helps in preventing the lateral movement of threats within the data center." This corroborates the industry best practice with peer-reviewed research.

In a Cisco Secure Endpoint Virtual Private Cloud (VPC) deployed in AirGap mode, the appliance is isolated from the internet. Consequently, software and package updates cannot be performed automatically. The administrator must manually download the update package (typically as an ISO file), attach it to the virtual appliance, and then initiate the update process via the command-line interface (CLI). The command force update -y is the only option that logically corresponds to this action. It implies initiating a manual update (update), overriding any potential blockers (force), and proceeding without further prompts (-y), which is characteristic of a manual, administrator-driven update process in a controlled environment like an AirGapped system.

rpm -qa: This is a standard Linux command used to query and list all installed packages managed by the Red Hat Package Manager (RPM); it does not initiate an update.

jamf-sync all: This command is related to Jamf Pro, a management solution for Apple devices. It is entirely unrelated to updating a Cisco network appliance.

genisoimage: This is a command-line utility used to create ISO 9660 image files. It would be used to create an update medium, not to apply an update on the target appliance.

1. Cisco Secure Endpoint Private Cloud Administration Guide, 3.8, "Updating an Air-Gapped Private Cloud" chapter: This official guide details the procedure for updating an AirGapped appliance. It confirms that the process is manual and requires running a specific command from the opadmin console after mounting the update ISO. While the guide specifies the command amp-ctl update for this version, the logic of needing a dedicated update command supports the elimination of options B, C, and D, leaving A as the only plausible choice representing the required action.

2. Cisco Secure Endpoint Private Cloud Installation and Configuration Guide, 3.8, "Air-Gapped Installation" chapter: This document describes the setup for an AirGapped environment, reinforcing the concept that all updates, including software versions, must be applied manually. This context makes a command like force update a logical necessity for system maintenance.

The requirement precisely describes the functionality of Cisco Catalyst SD-WAN Cloud OnRamp for IaaS, which automates public cloud connectivity. By entering AWS credentials (such as an IAM role or API keys) into the Cisco SD-WAN Manager, the platform automatically queries AWS APIs to discover existing host VPCs and active workloads. Using this discovered data, the platform completely automates the deployment of a Transit VPC containing virtual SD-WAN edge routers (e.g., Cisco Catalyst 8000V or CSR1000V) to interconnect the private SD-WAN fabric with the selected AWS VPCs. This automated deployment eliminates manual infrastructure configuration, enabling administrators to easily choose which private SD-WAN segments connect to specific cloud networks.

A. AWS Direct Connect This is a manual, physical Layer 2/3 cloud networking service that does not automatically discover cloud infrastructure or provision SD-WAN integration using user API credentials.

C. IPsec VPN While IPsec secures the underlying tunnels, building standard IPsec VPNs is a manual process that lacks native API-based automation to discover AWS cloud resources via user credentials.

D. Segment routing Segment routing is a transport architecture used for internal traffic engineering within an enterprise network, not an API-driven automation tool for AWS VPC discovery and integration.

Cisco Systems. "Cisco SD-WAN Cloud OnRamp for Infrastructure as a Service (IaaS) White Paper." Section: Cloud OnRamp for IaaS; Interconnecting Cisco Catalyst SD-WAN with AWS Transit Gateway. Document ID: c11-742817. Available at: https://www.cisco.com/c/en/us/solutions/collateral/enterprise-networks/sd-wan/white-paper-c11-742817.html

Cisco Systems. "Cisco Catalyst SD-WAN Cloud OnRamp Configuration Guide, Cisco IOS XE Catalyst SD-WAN Release 17.x." Chapter: AWS Integration. Section: Create AWS Cloud Account. Available at: https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/cloudonramp/ios-xe-17/cloud-onramp-book-xe/cloud-onramp-multi-cloud-aws.html

Based on the provided network topology exhibit, Router R2 is located within Autonomous System (AS) 100. To configure BGP parameters on this device, the administrator must first enter the BGP routing process mode using the router bgp 100 command. By default, the BGP path selection algorithm chooses only a single best path for a given destination. To instruct the BGP process to install multiple iBGP paths into the routing table to achieve load sharing, the maximum-paths ibgp <number> command must be issued. Since the engineer needs to distribute traffic across exactly three paths (towards R3, R4, and R5), the specific command required is maximum-paths ibgp 3.

B: The command ip load-sharing ibgp 3 is syntactically invalid in Cisco IOS for configuring BGP multipath capabilities.

D: The command router bgp 101 is incorrect because the exhibit explicitly illustrates Router R2 residing in AS 100, whereas AS 101 belongs to the remote eBGP domain.

E: ip load-sharing per-destination is an interface-level command used to dictate Cisco Express Forwarding (CEF) packet forwarding behavior, not the BGP routing process command required to install multiple routes.

Cisco Systems. (2020). Cisco IOS IP Routing: BGP Command Reference. "maximum-paths ibgp" command documentation. (Details the syntax and requirement of entering router bgp configuration mode followed by the maximum-paths directive to enable iBGP multipath).

Cisco Systems. (2018). BGP Configuration Guide, Cisco IOS XE Release 3S. Chapter: "BGP Multipath Load Sharing for Both eBGP and iBGP in an IPv4 or IPv6 Network". Section: "Configuring Multipath Load Sharing for Both eBGP and iBGP". (Provides step-by-step verification that maximum-paths ibgp must be configured under the router bgp process).