Practice Free H13-231_V2.0-ENU Exam Online Questions
To improve network I/O performance on a Kunpeng server handling massive concurrent connections, which Linux kernel feature allows the distribution of network interrupt handling across multiple CPU cores?
- A . SELinux
- B . RCU (Read-Copy-Update)
- C . IRQ Affinity (smp_affinity)
- D . Swap space
openGauss utilizes a NUMA-aware thread pool architecture. To prevent thread migration across NUMA nodes, which significantly impacts performance, what configuration parameter in postgresql.conf allows the database engine to automatically bind working threads to specific NUMA nodes?
- A . shared_buffers
- B . numa_distribute_mode
- C . work_mem
- D . max_connections
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 NIC.
- C . To distribute the software interrupt processing of received packets across multiple CPU cores.
- D . To limit the bandwidth of outbound traffic.
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.
Which testing tool is widely considered the industry standard for measuring sustained memory bandwidth (Read, Write, Copy, Triad) in high-performance computing environments on Kunpeng?
- A . Fio
- B . Iperf3
- C . STREAM
- D . Sysbench
Once the ExaGear dynamic binary translation software is installed on an openEuler system, which command drops the user directly into an emulated x86_64 bash shell environment?
- A . chroot /opt/exagear
- B . exagear — /bin/bash
- C . docker run x86_bash
- D . systemctl start exagear
A legacy multimedia application relies heavily on x86 AVX2 (Advanced Vector Extensions) intrinsic functions (e.g., _mm256_add_epi32). To port this to Kunpeng without manually rewriting thousands of lines of mathematical code to ARM NEON intrinsics, which open-source header library strategy is frequently recommended in the Kunpeng ecosystem?
- A . Use ExaGear to translate the source code text.
- B . Include translation headers like sse2neon.h or avx2neon.h which map x86 intrinsics to equivalent ARM NEON/SVE instructions at compile time.
- C . Disable vectorization completely using -fno-tree-vectorize.
- D . Compile the AVX code directly; the BiSheng compiler natively understands Intel intrinsics.
Which mathematical library is provided by the Kunpeng ecosystem to achieve ultimate performance, serving as an optimized alternative to standard BLAS/LAPACK?
- A . OpenBLAS
- B . Intel MKL
- C . KML (Kunpeng Math Library)
- D . GSL (GNU Scientific Library)
In a cloud data center utilizing Kunpeng servers, which feature allows a physical PCIe network interface card (NIC) to present itself as multiple independent virtual NICs, bypassing the hypervisor for near-native network performance in VMs?
- A . VXLAN
- B . OVS (Open vSwitch)
- C . SR-IOV (Single Root I/O Virtualization)
- D . DPDK
To utilize the Kunpeng Accelerator Engine (KAE) for accelerating HTTPS traffic on a web server, which popular open-source cryptographic library is KAE typically integrated with via an engine mechanism?
- A . GnuTLS
- B . OpenSSL
- C . Libgcrypt
- D . BoringSSL