Huawei H13-231_V2.0-ENU 問題練習

Question No : 1
Which virtualization technology provides the foundation for Huawei Cloud's Elastic Cloud Server (ECS) instances running on Kunpeng infrastructure?

• A.VMware ESXi
• B.Microsoft Hyper-V
• C.KVM (Kernel-based Virtual Machine) adapted for ARM64
• D.Xen

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Question No : 2
When migrating a Spark workload to Kunpeng, which specific open-source component in the Kunpeng Big Data ecosystem is used to accelerate Spark SQL shuffle operations?

• A.OmniOperator / OmniShuffle
• B.HBase
• C.Zookeeper
• D.Kafka

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Question No : 3
RoCEv2 (RDMA over Converged Ethernet v2) is widely used in Kunpeng HPC solutions. At which layer of the OSI model does RoCEv2 route packets across different subnets?

• A.Layer 2 (MAC layer)
• B.Layer 3 (Network layer, utilizing UDP/IP)
• C.Layer 7 (Application layer, utilizing HTTP)
• D.RoCEv2 cannot be routed across subnets.

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Question No : 4
In a Hadoop Big Data cluster running on Kunpeng, a significant amount of CPU time is spent calculating CRC32C checksums for HDFS data. How can this bottleneck be resolved?

• A.Disable all checksums in HDF
• B.Enable KAE (Kunpeng Accelerator Engine) or use KML to offload CRC32C calculations using ARM NEON instructions.
• C.Increase the Java Heap size for the DataNode.
• D.Switch from HDFS to a local ext4 file system.

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Question No : 5
When deploying a Ceph distributed storage cluster on Kunpeng servers, which component's performance benefits most directly from the high core count of the Kunpeng processor due to its multi-threaded architecture?

• A.Ceph Monitor (MON)
• B.Ceph Manager (MGR)
• C.Ceph OSD (Object Storage Daemon)
• D.Ceph MDS (Metadata Server)

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Question No : 6
What is the recommended CPU power governor setting in Linux to achieve the maximum and most stable performance for latency-sensitive applications on Kunpeng?

• A.powersave
• B.ondemand
• C.conservative
• D.performance

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Question No : 7
For an NVMe SSD installed in a Kunpeng server, which I/O scheduler is recommended in the Linux kernel to minimize latency and maximize IOPS?

• A.cfq (Completely Fair Queuing)
• B.none or mq-deadline
• C.bfq (Budget Fair Queuing)
• D.anticipatory

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Question No : 8
In Linux network tuning, what is the primary purpose of enabling RPS (Receive Packet Steering)?

• A.To aggregate multiple physical NICs into a logical bond.
• B.To offload TCP checksum calculation to the hardware NI
• C.To distribute the software interrupt processing of received packets across multiple CPU cores.
• D.To limit the bandwidth of outbound traffic.

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Question No : 9
To ensure a memory-intensive process (e.g., Redis) only allocates memory from its local NUMA node, which command-line utility should be used to launch the process?

• A.numastat
• B.numactl
• C.vmstat
• D.iostat

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Question No : 10
When analyzing the performance of a multi-threaded Java application on a Kunpeng server, you notice severe lock contention.
Which Kunpeng System Profiler feature helps visualize the call stack and identify exactly where threads are waiting?

• A.Network I/O Analysis
• B.Micro-architecture Analysis
• C.Lock and Wait Analysis
• D.Storage I/O Analysis

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Question No : 11
What is the primary function of A-Tune in the openEuler operating system?

• A.An antivirus scanner for kernel modules
• B.A graphical desktop environment
• C.An AI-based, automated OS performance tuning engine
• D.A container orchestration tool similar to Kubernetes

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Question No : 12
In a cloud-native environment, developers need to build container images that can run on both x86 and Kunpeng (ARM64) nodes.
Which Docker CLI plugin facilitates building multi-architecture images?

• A.Docker Compose
• B.Docker Swarm
• C.Docker Buildx
• D.Docker Machine

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Question No : 13
Huawei has developed a customized JDK to optimize Java application performance on Kunpeng processors.
What is the name of this JDK?

• A.OpenJDK
• B.Oracle JDK
• C.BiSheng JDK
• D.Corretto

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Question No : 14
Which GCC compiler flag should be explicitly used when compiling an application to leverage the specific features of the Kunpeng 920 processor (ARMv8.2-A architecture)?

• A.-march=x86-64
• B.-march=armv7-a
• C.-march=armv8.2-a
• D.-mcpu=cortex-a53

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Question No : 15
When porting C/C++ code from x86 to ARM64, developers often encounter unexpected bugs due to the default behavior of the char data type.
What is the default signedness of char on the ARM architecture?

• A.Signed by default
• B.Unsigned by default
• C.Dynamically determined at runtime
• D.ARM does not support the char data type

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