700-841 Cisco IoT Advantage for System Engineers Practice Questions
Prepare for 700-841 with more than an answer.
- Exam fee
- $300 USD
- Level
- Specialist
- Valid for
- 3 years
Domains covered on the exam 8
- Extended Enterprise15%
- Industrial Security15%
- Manufacturing Solutions10%
- Distribution Automation or Secondary Substation Solutions10%
- Roadways/Intersections Solutions10%
- Cisco Ultra-Reliable Wireless Backhaul10%
- IoT Operations Dashboards and Asset Vision15%
- Edge Data - Edge Intelligence and IOx15%
- 1
A utility company is designing a secure architecture for a secondary substation. According to the Purdue model for industrial control systems, in which level would a Cisco CGR 2010 router, responsible for backhauling SCADA data to the control center, typically be placed?
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Correct answer: A
The CGR 2010, acting as the WAN aggregation and security gateway for the substation, fits perfectly into Level 3.5, the IDMZ. Its role is to terminate the WAN connection and provide a secure, controlled boundary between the site operations network (Level 3 and below) and the enterprise or utility-wide network (Level 4/5). It enforces security policies and ensures that only authorized SCADA traffic can traverse between the substation and the central control center.
- 2
A large enterprise is extending its corporate network to several small remote offices using Cisco SD-Access. Each office has only a few users and a handful of IoT devices (e.g., printers, security cameras). The goal is to enforce consistent security policies from the main campus across these remote locations with minimal hardware footprint. Which SD-Access component is best suited for this scenario?
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Correct answer: C
A Policy Extended Node is the ideal solution. It allows a compatible switch (like a Catalyst 9000 series) to connect to an SD-Access fabric edge node over a simple Layer 3 routed link. The remote switch does not participate in the fabric control plane (LISP, VXLAN) itself, but it can enforce group-based policies (SGTs) downloaded from ISE. This extends consistent security policy enforcement to remote sites with a very small hardware and management footprint, perfectly matching the requirements.
- 3
A technician is deploying a Docker container application to a Cisco IOx-enabled device. The application fails to start. After checking the application logs in IOx Local Manager, the technician sees a 'permission denied' error when the application tries to write to a log file inside its container. Which Dockerfile instruction was likely omitted or misconfigured, causing this issue?
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Correct answer: C
The
USERinstruction in a Dockerfile sets the user name (or UID) to run commands. By default, many base images run as the 'root' user. However, some applications are designed to run as a non-root user for security. If the application runs as a specific user, but the directory it's trying to write to is owned by 'root' and lacks the correct permissions, a 'permission denied' error will occur. Ensuring the correctUSERis specified and that file permissions are set correctly (often with aRUN chown ...command) is crucial for resolving this type of issue. - 4
True or False: The Cisco ISA 3000 industrial security appliance can only be managed via a local command-line interface (CLI) due to the security requirements of OT environments.
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Correct answer: B
This statement is false. While the ISA 3000 can be managed via CLI, it is designed for scalable, centralized management. When running the Firepower Threat Defense (FTD) software, it is typically managed by the Firepower Management Center (FMC) or the cloud-based Cisco Defense Orchestrator (CDO). These platforms provide a graphical user interface for configuring security policies, monitoring events, and managing multiple devices from a single point.
- 5
An architect is explaining the data flow within Cisco Edge Intelligence. Data is collected from a source, processed, and then sent to a destination. Which component is responsible for executing the user-defined JavaScript code that transforms, filters, and formats the data before it is sent northbound?
flowchart TD A[Southbound Device] --> B{Southbound Connector}; B --> C[Data Logic Engine]; C --> D{Northbound Destination}; D --> E[Cloud Platform];Show answer details
Correct answer: C
The Data Logic component of Edge Intelligence is where users can apply custom scripts (typically in JavaScript) to manipulate the data collected by the southbound connectors. This is where transformations (e.g., converting Celsius to Fahrenheit), filtering (e.g., only sending data if a value exceeds a threshold), and re-formatting (e.g., creating a specific JSON structure) occur before the data is passed to the northbound destination.
- 6
A manufacturing firm is deploying Cisco Cyber Vision to gain visibility into their OT network, which heavily relies on the PROFINET protocol. They need to capture detailed asset information and communication patterns. Where should the Cyber Vision sensor be placed to achieve the most comprehensive visibility without disrupting real-time operations?
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Correct answer: B
Placing the sensor on a SPAN port of the aggregation switch provides the broadest visibility across multiple cell/area zones. This centralized monitoring point captures inter-zone and zone-to-enterprise traffic without introducing a point of failure in the critical I/O links. While a TAP on a PLC link provides deep visibility for that specific link, it is not scalable for comprehensive network monitoring. A sensor on the enterprise firewall would miss intra-OT communication, and installing it directly on the SCADA server is not a standard deployment method.
- 7
A developer is creating a custom application for a Cisco IR1101 router using IOx. The application needs to process sensor data locally and requires access to the router's GPS module and serial port. Which two components of the IOx application package descriptor file (
package.yaml) are essential for enabling this access? (Select TWO)Show answer details
Correct answer: C, D
The
permissionssection, specifically with theprivelegedflag set to true, is often required to allow the container to interact with low-level hardware devices that have been mapped into it via thedevicessection.The
devicessection is used to explicitly request access to host system hardware like serial ports (/dev/ttyS*) or GPS modules. This is a critical security and resource management feature of IOx. - 8
A utility company is deploying a Field Area Network (FAN) for its distribution automation system. The network uses Cisco CGR 1240 routers in outdoor enclosures. The primary goal is to ensure that SCADA communications using the DNP3 protocol are prioritized and delivered reliably, even during periods of network congestion from secondary applications like video surveillance. Which QoS mechanism is most suitable for this requirement?
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Correct answer: C
Low Latency Queuing (LLQ) is the most appropriate choice. It provides a strict priority queue (PQ) within a Class-Based Weighted Fair Queuing (CBWFQ) structure. This allows critical, delay-sensitive traffic like DNP3 SCADA messages to be dequeued and transmitted ahead of all other traffic, ensuring its timely delivery even under congestion. WFQ and CBWFQ provide fair bandwidth allocation but do not offer the strict priority needed for critical control traffic. WRED is a congestion avoidance mechanism, not a prioritization tool.
- 9
True or False: In a Cisco SD-Access fabric, an Extended Node, such as a Cisco IE 3300, is managed by Cisco DNA Center as a native fabric device and can extend fabric capabilities like policy-based segmentation directly to the connected IoT endpoints.
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Correct answer: A
This statement is true. Extended Nodes are specifically designed to extend the SD-Access fabric into non-carpeted or challenging environments. They are discovered, provisioned, and managed by Cisco DNA Center as part of the fabric, and they enforce group-based policies defined in ISE, allowing for micro-segmentation of IoT devices at the point of connection.
- 10
A logistics company is using Cisco Industrial Asset Vision to monitor the location and condition of high-value assets in a large warehouse. They have deployed LoRaWAN sensors and IXM gateways. The primary business requirement is to ensure asset data is securely transmitted from the gateway to the Cisco IoT Operations Dashboard in the cloud. Which protocol is used for this northbound communication from the gateway?
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Correct answer: A
Cisco IXM gateways used with Industrial Asset Vision establish a secure tunnel using HTTPS (over TLS) to communicate with the Cisco IoT Operations Dashboard. This ensures that all data, including sensor readings and gateway status, is encrypted and securely transmitted over the internet to the cloud platform. While CoAP and MQTT are common IoT protocols, the standard communication for this specific solution is secure HTTPS.
