MCQs

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What does vCPU stand for in cloud computing?
a. Virtual Central Processing Unit
b. Very Computed Processing Unit
c. Visual CPU
d. Virtualized Cloud Processing Unit
Answer: azadara+1
Which layer allocates vCPUs to virtual machines?
a. Hypervisor
b. Operating System
c. BIOS
d. Application Layer
Answer: atechtarget+1
What is a vCPU in a virtual machine?
a. Logical processor assigned to VM
b. Physical CPU core
c. Network interface
d. Storage device
Answer: azadara+1
The number of vCPUs in a VM determines its:
a. Processing capability
b. Storage capacity
c. Network bandwidth
d. Memory limit
Answer: atechtarget+1
In most servers, a single physical CPU core can host how many vCPUs with hyper-threading?
a. 2
b. 4
c. 8
d. 1
Answer: azadara+1
What process allows more vCPUs than physical cores to be assigned?
a. Overcommitment
b. Under-provisioning
c. Deduplication
d. Snapshots
Answer: azadara
In virtualization, vCPUs are distributed among VMs by what mechanism?
a. CPU scheduling
b. Packet switching
c. RAID configuration
d. DNS delegation
Answer: aalibabacloud+1
What is the relationship between pCPU and vCPU?
a. vCPU is a logical abstraction of pCPU
b. vCPU is a type of memory
c. vCPU is a network device
d. vCPU is a physical processor
Answer: aalibabacloud+1
Which of the following best describes how a vCPU operates in a cloud environment?
a. Schedules instructions on physical cores using hypervisor
b. Operates independent of hardware
c. Directly manages storage
d. Is limited to one thread
Answer: aalibabacloud+1
Which is a potential risk of overcommitting vCPUs?
a. Performance contention
b. Increased storage
c. Enhanced memory
d. Reduced network speed
Answer: aalibabacloud+1
In a cloud VM, what does each vCPU represent?
a. Ability to run one processing thread
b. Storage block
c. Network subnet
d. Security group
Answer: atechtarget+1
Which hypervisor feature determines vCPU mapping to hardware?
a. CPU scheduling
b. Virtual disk mapping
c. Logical Volume Management
d. Firewall configuration
Answer: azadara+1
What does CPU scheduling in a hypervisor strive to optimize?
a. Resource utilization and fairness
b. Memory overcommitment
c. Disk redundancy
d. Network failover
Answer: aalibabacloud+1
Which cloud computing benefit is closely associated with vCPUs?
a. Resource abstraction
b. Static assignment
c. Manual provisioning
d. Hardware bypass
Answer: atechtarget+1
Assigning more vCPUs to a VM than available physical cores is known as:
a. Overcommitment
b. Cloning
c. Deduplication
d. Mirroring
Answer: azadara+1
What is the function of the hypervisor in relation to vCPUs?
a. Maps vCPUs to physical CPU resources
b. Manages VM storage
c. Configures network adapters
d. Issues SSL certificates
Answer: aalibabacloud+1
Which statement is true about vCPUs and VM performance?
a. More vCPUs may improve performance, but excessive allocation can hurt efficiency
b. Fewer vCPUs always improve performance
c. vCPU count only affects memory
d. VM performance is unrelated to vCPU count
Answer: azadara+1
For a VM, allocating 4 vCPUs means:
a. The guest OS expects to run 4 threads concurrently
b. The VM has 4 network interfaces
c. The VM has 4 hard drives
d. The VM is limited to 4 GB RAM
Answer: atechtarget+1
Which technology allows each vCPU to execute multiple threads?
a. Hyperthreading
b. VLAN
c. RAID
d. NAT
Answer: atechtarget+1
What is a key advantage of vCPUs?
a. Flexible abstraction of compute resources
b. Fixed hardware usage
c. Dedicated network assignment
d. Static storage allocation
Answer: aalibabacloud+1
Which of the following can affect the ratio of vCPUs to physical CPUs?
a. Hypervisor type and workload
b. Region location
c. Billing cycle
d. Security policies
Answer: ahyve+1
The hypervisor schedules vCPU tasks onto:
a. Physical CPU cores
b. Logical storage
c. Network routers
d. Virtual subnets
Answer: atechtarget+1
When optimizing cloud workloads, what vCPU metric is most relevant?
a. vCPU utilization percentage
b. IP address count
c. Storage latency
d. VLAN ID
Answer: azadara+1
Which action can lead to CPU contention in cloud VMs?
a. Excessive overcommitment of vCPUs
b. Under-provisioning disk
c. Assigning SSIDs
d. Using VLANs
Answer: aalibabacloud+1
What happens if a VM has more assigned vCPUs than physical CPU availability?
a. Potential performance degradation
b. Network balancing
c. Improved security
d. Greater physical memory
Answer: azadara+1
In AWS EC2, what does a vCPU typically map to?
a. A hardware thread or a physical core
b. Elastic Block Store
c. VPC subnet
d. Security Group
Answer: atechtarget+1
Which of the following hypervisors are commonly used for vCPU allocation?
a. VMware ESXi, KVM, Xen
b. WordPress, Drupal
c. MongoDB, MySQL
d. Cisco IOS, Juniper Junos
Answer: azadara
Why is careful management of vCPUs important?
a. To prevent resource contention and latency
b. To automate backups
c. To assign valid SSL certificates
d. To create hybrid clouds
Answer: aalibabacloud+1
What best describes vCPU overcommitment?
a. Allocating more vCPUs than physical cores
b. Assigning static memory
c. Using VLANs
d. Configuring firewalls
Answer: aalibabacloud+1
Which resource in a VM is most directly linked to vCPU count?
a. Processing threads
b. Disk space
c. Public IP addresses
d. Storage buckets
Answer: atechtarget+1
What does vCPU allocation influence in a multi-tenant cloud environment?
a. Fairness and performance for tenants
b. Static routing
c. Encryption algorithm
d. Volume snapshotting
Answer: atechtarget+1
Which is NOT a direct property of vCPUs?
a. Storage capacity
b. Processing threads
c. Thread scheduling
d. Logical cores
Answer: azadara+1
What primary factor limits the number of vCPUs that can be allocated?
a. Physical CPU core count
b. OS version
c. Storage policy
d. Network topology
Answer: aalibabacloud+1
What is vCPU pinning?
a. Binding a vCPU to a specific physical CPU
b. Overprovisioning memory
c. Assigning fixed IPs
d. Partitioning storage
Answer: azadara
In cloud platforms, vCPU pricing is usually based on:
a. Number of vCPUs allocated
b. Volume size
c. Network traffic
d. Number of public IPs
Answer: ahyve+1
What tool does a system admin use to monitor vCPU usage?
a. Hypervisor management console
b. USB monitor
c. WiFi analyzer
d. SSL viewer
Answer: ahyve+1
What is a benefit of vCPU abstraction for cloud tenants?
a. Elastic scaling of processing power
b. Fixed storage blocks
c. Stateless connections
d. Required VLANs
Answer: atechtarget+1
Which performance metric is vital when scaling VMs based on vCPU?
a. CPU utilization
b. Disk IOPS
c. Subnet mask
d. Object size
Answer: aalibabacloud+1
What affects the effective speed of a vCPU?
a. Hypervisor scheduling and workload
b. Static MAC address
c. Local DNS configuration
d. Storage protocol
Answer: azadara+1
What is a “vCPU core”?
a. Logical processing unit within a VM
b. Encryption key
c. Backup repository
d. VLAN switch
Answer: atechtarget+1
What happens if vCPUs are under-allocated in a VM?
a. Application performance may suffer
b. Disk performance is boosted
c. Public IPs increase
d. VLANs are disabled
Answer: atechtarget+1
In public cloud services, what determines the default vCPU allocation?
a. Instance type or VM size
b. Cloud region
c. IPv6 support
d. Firewall rule set
Answer: azadara+1
What does “thread” refer to in context of vCPU?
a. Executable sequence managed by CPU
b. Storage pointer
c. Network cable
d. Hypervisor patch
Answer: atechtarget+1
What is CPU affinity in virtualization?
a. Restricting a VM or vCPU to specific physical CPU cores
b. Assigning storage quotas
c. Limiting network traffic
d. Automating VM snapshots
Answer: ahyve
Which could cause high vCPU wait time in a VM?
a. Host CPU overcommitment
b. More disk
c. Static IPs
d. VLAN tagging
Answer: aalibabacloud+1
What describes a “logical processor” in a VM?
a. vCPU
b. Storage LUN
c. Subnet mask
d. VLAN ID
Answer: azadara+1
Which scenario best fits vCPU bursting?
a. Temporary high usage needs
b. Constant idle load
c. Fixed IP allocation
d. Storage mapping
Answer: atechtarget+1
Why are vCPUs important for cloud cost management?
a. Many providers price instances according to vCPU count
b. They control encryption keys
c. Dictate storage tier
d. Limit number of users per VM
Answer: ahyve+1
Which command-line tool can display vCPU stats in Linux?
a. top or htop
b. ifconfig
c. mkfs
d. yum
Answer: atechtarget
What is a critical aspect when benchmarking VM performance?
a. vCPU configuration
b. Storage size alone
c. Operating system logo
d. Virtual network ID
Answer: aalibabacloud+1

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