Schlussprüfung — Fachinformatiker Digitale Vernetzung (English)

• A) Maximizing production through fully automated manufacturing without human intervention
• B) Creating smart factories with flexible, self-organizing production processes
• C) Reducing the number of employees by using robots in all production areas
• D) Increasing energy efficiency by abandoning digital control systems

Correct Answer: B. Industry 4.0 aims for smart factories with flexible, self-organizing processes, not for complete automation or reduction of jobs.

• A) Blockchain and cryptocurrencies
• B) KNX protocols, IoT sensors, and Building Management Systems
• C) Virtual Reality and Augmented Reality

• A) Higher data compression rates
• B) Deterministic, time-exact data transmission
• C) Lower network utilization
• D) Easier implementation of security mechanisms

Correct Answer: B. OPC UA over TSN enables deterministic, time-exact data transmission through the combination of OPC UA with Time-Sensitive Networking, while the other options are not the core advantage of this combination.

• A) Client/Server uses TCP, Pub/Sub uses UDP
• B) Client/Server is bidirectional, Pub/Sub is unidirectional
• C) Client/Server requires a permanent connection, Pub/Sub is stateless
• D) Client/Server supports only one data type, Pub/Sub supports multiple

Correct Answer: C. Client/Server requires a permanent connection with state information, while Pub/Sub is stateless and is particularly suitable for efficient distribution to multiple recipients. The other options are not correct.

• A) The definition of security protocols
• B) The extension of the core standard for industry-specific use cases
• C) The description of physical connection specifications
• D) The definition of data compression algorithms

Correct Answer: B. Companion Specifications extend the core OPC UA standard with industry-specific semantics for particular use cases, while the other options describe different aspects of OPC UA implementation.

• A) Ensure encryption of all messages
• B) Receive messages from publishers and forward them to appropriate subscribers
• C) Perform authentication of all clients in the network
• D) Guarantee data persistence for all messages

Correct Answer: B. The broker acts as an intermediary that forwards messages based on the topics a

• A) Conversion of digital signals into analog signals
• B) Conversion of analog sensor data into digital values
• C) Amplification of weak electrical signals
• D) Filtering of interference signals in communication

Correct Answer: B. An ADC converts analog sensor data into digital values because microprocessors can only process digital data.

• A) Higher security through centralized data management
• B) Reduced latency through local data processing
• C) Lower costs through less hardware usage
• D) Easier implementation without specialized knowledge

Correct Answer: B. Edge Computing reduces latency by processing data directly at the source, rather than having to be sent to remote cloud systems. Option A is incorrect because Edge Computing is decentralized and requires different security considerations. Option C is incorrect because Edge Computing requires additional hardware. Option D is false because Edge Computing requires specific expertise.

• A) It serves exclusively as a pure data relay point
• B) It translates protocols and performs local processing
• C) It completely replaces cloud services
• D) It stores all data permanently locally

Correct Answer: B. An Edge Gateway acts as an intermediary between local devices and cloud services, performs protocol translations, and enables local data processing. Option A is incomplete because Gateways do more than just forward. Option C is incorrect because Gateways complement, not replace, cloud services. Option D is incorrect because Gateways typically only store data temporarily.

• A) EdgeX Foundry is a commercial p

• A) To increase maximum network speed
• B) To limit the spread of attacks between different security zones
• C) To reduce the number of network components needed
• D) To simplify the implementation of cloud services

Correct Answer: B. Network segmentation according to Purdue primarily serves security purposes by limiting attacks to individual zones. The other options address network topics, but not the security aspect of segmentation.

• A) NTP (Network Time Protocol)
• B) PTP (Precision Time Protocol)
• C) SNTP (Simple Network Time Protocol)
• D) GPS Time Protocol

Correct Answer: B. PTP was standardized by IEEE as standard 1588 and offers microsecond accuracy, while NTP is only accurate in the millisecond range and SNTP is a simplified version of NTP.

• A) The maximum allowable delay in a system
• B) The absolute accuracy of a time source
• C) The fluctuation in the delay of packets
• D) The deterministic transmission time in networks

Correct Answer: C. Jitter refers to the fluctuation in the delay of packets, which reduces the predictability of latency and affects the accuracy of time synchronization.

• A) High-precision industrial applications with microsecond accuracy
• B) Local networks with deterministic latency
• C) Large, unpredictable network paths
• D) Systems requiring sub-microsecond accuracy

Correct Answer: C. NTP is better suited for large, unpredictable network paths as it is designed to handle variable network conditions, while PTP requires more predictable network paths to achieve its high accuracy.

• A) Higher bandwidth for time data
• B) Lower cost implementation
• C) Minimized jitter and guaranteed transmission times
• D) Simplified configuration

Correct Answer: C. Deterministic networks minimize jitter and provide guaranteed transmission times, which is essential for high-precision time synchronization in industrial applications.

• A) HTTP
• B) MQTT
• C) FTP
• D) SMTP

Correct Answer: B. MQTT is a lightweight Publish/Subscribe protocol specifically for M2M communication in resource-constrained environments. HTTP is more resource-intensive, FTP is for file transfer, and SMTP is for email sending.

• A) Increased storage capacity
• B) Centralized management of all resources
• C) Reduced latency and bandwidth requirements
• D) Lower hardware costs

Correct Answer: C. Edge Computing reduces latency and bandwidth requirements by processing data near its origin. Centralized management increases latency, and hardware costs are often similar or higher.

• A) Filter MQTT messages
• B) Capture sensor data
• C) Visualize data and create dashboards
• D) Configure edge server

Correct Answer: C. Grafana's main function is to visualize data and create dashboards. While it can connect to data sources that might filter MQTT messages, its primary role is visualization, not data capture or server configuration.