[Alibaba Cloud Question Bank 2] Hematemesis sorting out Aliyun Computing ACA Question Bank 2

★101/212. SLB load balancing has the ability to resist DDos attacks
A, correct
B, wrong
Tip:
Answer: A
★102/212. Alibaba Cloud SLB load balancing supports TCP, UDP, HTTP, HTTPS protocols
A, correct
B, incorrect
Tip:
Answer: A
★103/212. Regarding the ECS weight configuration in the backend server pool of SLB, the following statement is correct:
A. ECS with higher weight ratio will be allocated more access requests
B. ECS with higher weight ratio at the end of the month will be allocated to more access requests Many access requests
C. There is no necessary relationship between the weight ratio and the distribution discipline of access requests
D. The weight can be arbitrary and does not affect the ECS access volume
Tip:
Answer: A
★104/212. Alibaba Cloud SLB load balancing products do not support users themselves. Upload certificate file
A, correct
B, wrong
prompt:
answer: B
*105/212. What data cannot be monitored by Alibaba Cloud monitoring
A, ECS instance information
B, RDS database information
C, load balancing data information
D, number of mirrors
Tip:
Answer: D
★106/212, cloud monitoring can count the availability and response time of site services, such as Http, ping, dns, tcp and other services, monitor and alarm
A, correct
B, error
Prompt:
Answer: A
★107/212. Aliyun cloud monitoring can realize the mobile phone SMS alarm mechanism
A, correct
B, wrong
Tip:
Answer: A
★
108 /212. What is the SMS limit
for Alibaba Cloud monitoring
and alarming
?
★109/212. The port range of SLB monitoring is
A, 1-1024
B, 1-65535
C, 1024 65535
D, 1-65536
Prompt:
Answer: B
★110/212. When using Alibaba Cloud SLB load balancing, the backend ECS servers must be connected ()
A, zone
B, reglon
C, dlstrlbute
D, computer room
Tip:
Answer: B
*111/212, the cloud database RDS cannot be accessed from the Internet
A, correct
B, wrong
Tip:
Answer: B
★112/212. RDS Mysq|The size of the read-only instance must be the same as that of the main instance-cause
A, correct
B, and error
Prompt:
Answer: B
*113/212. Which of the following does not belong to virtualization technology
A, KVM
B, virtualhost
C, Vmware
D, Hypervisor
Tips: Elimination method, KVM Vmware must be virtualization technology, Hypervisor is the core technology of virtualization, virtualhost is more It may be a concept or configuration method of virtualization.
Answer: B
★114/212. What method does OSS object storage need to perform read and write operations
A, API
B, mounting
C, snapshot
D, mirroring
Tips:
Answer: A
*115/212. What functions does Alibaba Cloud OSS object storage not include
A, 3 copies
B, HTTP access
C, FTP access
D, API access
Tip:
Answer: C
★116/212. SLB load balancing can set the weight range for the backend ECS server as
A, 1-254
B, 1-100
C, 1-255
D, 100-200
Tip:
Answer: B
*117/212. After the user successfully creates a Bucket, the Bucket name can be modified
A, correct
B, incorrect.
Tip:
Answer: B
★118/212. Aliyun object storage OSS copy will be stored on the same switch and different servers in the same cabinet by default
A, correct
B, error
prompt: OSS automatically stores the user's data copy to different servers in the same region The requirement is that it must be on the same switch and the server on the same cabinet
Answer: B
*119/212. What algorithm does object storage use to dynamically adjust the number of storage servers
A. Consistent Hash algorithm
B, remainder
C, random number
D, sequential read and write
Tips:
Answer: A
*120/212. In the cloud computing environment, users do not need to purchase software and hardware, and can use the services provided by the cloud directly, which greatly saves user
investment costs and service and online time. The user chooses Alibaba Cloud ECS, which belongs to the cloud computing service model?
A. Infrastructure as a service (IaaS)
B. Platform as a service (Paas)
C. Data as a service (Daas)
D. Software as a service (Saas)
Tips: Elastic Compute Service (ECS for short) is an
IaaS (Infrastructure as a Service) level cloud computing service provided by Alibaba Cloud with excellent performance, stability, reliability and elastic expansion.
Answer: A
★121/212. Which of the following statements about the GPU server in Alibaba Cloud ECS is wrong?
A. Suitable for video decoding, deep learning and other scenarios
B. Logic control, serial operation
C. Real-time high-speed parallel computing and floating Point Computing Capability
D. General-purpose GPU Computing Design Using CUDA and OpenCL Programming Model
Tips: The feature and advantage of GPU server lies in its excellent parallel computing capability.
Answer: B
★122/212. Among the following statements about the release of Alibaba Cloud ECS, which one is wrong?
A. Pay-as-you-go instances can be released
B. The instance can be set to automatically release time to let Shichuang automatically release
C. When the instance is released, the data The disk can be reserved.
D. After the instance is released, it can be retrieved through the recycle bin.
Note: After the instance is released, the data cannot be recovered, and cannot be retrieved through the recycle bin.
Answer: D
★123/212. In Alibaba Cloud, which network can be isolated?
A, VPC
B, VPN
C, NAT
D, EIP
Tip: VPC (Virtual Private Cloud) is a user-defined network created based on Alibaba Cloud Private network, Layer 2 logic isolation between different private networks
, users can create and manage cloud product instances in the private network created by themselves, such as ECS, load balancing, RDS, etc.
Answer: A
*124/212. Users can use the Workbench tool to connect to the Linux system cloud server ECS. What is the protocol that needs to be used when using the Workbench tool?
A, SSH
B, HTTP
C, HTTPS
D, ICMP
Note: Workbench uses the SSH protocol to connect to the ECS server of the Linux system.
Answer: A
★125/212. Your company's website is accelerated through CDN, and now you want to delete the CDN. How to ensure that the website
can continue to be accessed?
A. After deleting the CDN, the source site can be directly accessed without any operation.
B. The service provided by the source site can be accessed as long as it is normal
. C. Change the CNAME record in the DNS to The A record of the source site
D, the bandwidth of the source site is guaranteed to be sufficient
. Prompt: For users, the accessed domain name remains unchanged, so it is necessary to change the CNAME domain name resolution record of the CDN to the source site A record, so as not to affect The website is accessible normally.
Answer: C
*126/212. If the user stops a pay-as-you-go cloud server ECS and chooses not to keep the instance after enabling no fee for instance stop in the VPC, which of the following will continue to be charged? A, VCPU B
,
memory
C
, Fixed public IP address
D. System disk
Note: After the ECS instance is released, the unused public IP address will be charged.
Answer: C
★127/212. When a user creates a cloud server ECS instance with a Linux operating system, neither a fixed public network IP nor an elastic public network IP is allocated, so what method can be used to connect to this instance? A,
Workbench
B , VNC
C, Putty
D, MSTSC
prompt: A, C, and D options are all

[Alibaba Cloud Question Bank 2] Hematemesis sorting out Aliyun Computing ACA Question Bank 2

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