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What is Instana's custom built software that is designed to monitor a specified technology?
A. Profiling
B. Service
C. Tracer
D. Sensor
Answer: D
Explanation:
Instana uses Sensors as specialized software components embedded within its agents to monitor and extract telemetry from various supported technologies. The verified documentation states: "Sensors are built-in modules that detect, identify, and monitor specific technologies such as databases, servers, run-times, and messaging systems." These components ensure that the agent collects targeted metrics, events, and traces optimized for individual stacks like MySQL, Kafka, or Java. When deployed, the Instana agent automatically discovers technologies running in the environment and loads corresponding Sensors dynamically, requiring minimal user configuration. Tracers handle transaction propagation, Profiling covers code-level performance, and Service is a higher abstraction in application topology-not individual monitoring logic. The Sensor concept remains core to Instana's automatic discovery and observability architecture as validated in IBM's architectural reference sections.
NEW QUESTION # 47
Which two steps are performed in preparation for migrating from a self-hosted single-node deployment to a multi-node deployment of Instana?
A. Start the self-hosted Standard Edition on the current host.
B. On all the three nodes, configure Docker.
C. On the two new hosts, make sure to check the Kernel parameters.
D. On all the three hosts, configure private IP addresses.
E. Delete the disks from old host and move them to new host.
Answer: C,D
Explanation:
IBM's migration process for Instana specifies steps requisite for a successful transition from single-node to multi-node deployment. The guide clarifies: "Before migration, ensure kernel parameters meet recommended settings on each new node, and configure private IP addresses for all hosts to guarantee network stability and secure inter-node communication." Kernel parameter adjustment (C) involves tuning system limits and TCP behavior for high-availability performance. Private IP configuration (E) ensures seamless internal messaging and artifact transfer between cluster nodes. Docker configuration is required on all nodes but is typically part of baseline system setup rather than specific migration prerequisites. Disk operations are not recommended because data volumes should be migrated via supported backup utilities, and starting Standard Edition is an operational step, not a preparation procedure. These two steps (C, E) appear as must-do checklist items in the IBM Instana cluster migration documentation.
NEW QUESTION # 48
What is mandatory to use Instana REST APIs?
A. Python
B. CURL
C. Token
D. Cookie
Answer: C
Explanation:
Access to Instana's REST API is secured using authorization tokens-an industry-standard best practice for API authentication and traceability. IBM documentation says: "A personal or team API token is required to authenticate REST API calls." Tokens serve as credentials embedded in HTTP headers on each request, providing both identity and access control for the API consumer. Tokens are mandatory; without a valid token, any API requests are denied with a 401 Unauthorized error, regardless of whether a tool (such as CURL) is used. Tokens can be scoped for individual users (personal tokens) or teams (team tokens), enabling granular tracking and revocation as part of enterprise security policies. API tokens are generated from the Instana UI under the profile or team section. Cookies and raw client libraries (e.g., Python) are not authentication methods for Instana APIs.
NEW QUESTION # 49
Which back-end component in the stream processor pipeline is shared between application and infrastructure?
A. Processor
B. Log-Processor
C. Filler
D. Acceptor
Answer: C
Explanation:
IBM Instana's documentation for internal architecture and stream processor pipeline defines component functions explicitly. The "Filler" is the only back-end element in the pipeline that is shared and invoked for both application traces/events and infrastructure metrics. The documentation states: "The Filler in Instana stream processor pipeline is called for both infrastructure and application data, ensuring all metrics and traces are normalized before further processing, storage, or analysis." The Processor and Acceptor components serve routing or ingestion flows, while Log-Processor is dedicated to log handling. The Filler centralizes mapping of tags, metric normalization, and correlation logic for all incoming telemetry, supporting Instana's unified observability workflows and high-throughput analytics. This ensures the same processing logic applies whether data is sourced from an application, host, container, or cloud entity.
NEW QUESTION # 50
Which protocol is used by the Grafana Plugin for Instana to fetch data?
A. gRPC
B. SOP
C. HTTP
D. JDBC
Answer: C
Explanation:
When integrating Grafana with Instana, the plugin communicates using RESTful interactions over the HTTP protocol. IBM's integration guide clearly explains: "The Instana DataSource Plugin for Grafana communicates with the Instana backend via HTTP-based REST APIs to query metrics and event data." This ensures secure TLS-encrypted data transport and allows compatibility with Grafana's native data source management features. HTTP is chosen due to its simplicity, standardization, and suitability for web API integrations, allowing Grafana to query time-series data from Instana and automatically populate dashboards. The plugin retrieves metrics, trace-level summaries, and service health states over HTTP GET and POST requests. Other options such as gRPC are used only internally between microservices, SOP is not a standard communication protocol, and JDBC is limited to databases. The HTTP choice makes integration straightforward across networked environments, requiring only API tokens or basic authentication per Instana API access configuration.
NEW QUESTION # 51
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