MCQs

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1. Which of the following is a primary function of a virtual network interface controller (vNIC) in cloud computing?
   a. Facilitates storage allocation
   b. Manages virtual machine memory
   c. Enables network connectivity for VMs
   d. Handles CPU scheduling
   Answer: coracle+2
2. What is typically assigned to each vNIC in a cloud environment?
   a. Public IP only
   b. Private IP address
   c. MAC address
   d. Both b and c
   Answer: dwayground+1
3. In cloud platforms, which resource allows a virtual machine to connect with endpoints inside and outside the virtual cloud network?
   a. Primary CPU
   b. VNIC
   c. Hypervisor
   d. Storage gateway
   Answer: bscribd+1
4. Which statement is most accurate regarding the scalability of vNICs on a virtual machine?
   a. The number of vNICs is unlimited
   b. Each instance supports only one vNIC
   c. The number of vNICs is defined by the instance shape or type
   d. Adding vNICs reduces storage performance
   Answer: coracle
5. What happens when a secondary vNIC is removed from a virtual machine instance?
   a. It remains unattached
   b. It is automatically deleted
   c. It becomes a public IP
   d. The instance is terminated
   Answer: boracle
6. Which address type can be optionally associated with each vNIC in addition to its primary private IP?
   a. Gateway IP
   b. Secondary private IPv4 and IPv6
   c. Hypervisor IP
   d. Resource address
   Answer: boracle
7. Each vNIC should reside in which of the following cloud objects?
   a. Availability Zone
   b. Storage Pool
   c. Subnet
   d. Resource Group
   Answer: coracle
8. Which networking feature do vNICs directly support in cloud environments?
   a. Load balancing
   b. VLAN tagging
   c. Encryption at rest
   d. Direct I/O mapping
   Answer: boracle
9. Which of the following is true about the bandwidth allocation for vNICs attached to a single VM?
   a. Each vNIC has a separate bandwidth pool
   b. Total bandwidth is fixed regardless of the number of vNICs
   c. Bandwidth is doubled with every new vNIC
   d. vNICs slow down VM startup
   Answer: boracle
10. What is the primary difference between a physical NIC and a vNIC in cloud platforms?
    a. vNICs handle only storage traffic
    b. vNICs are software representations attached to VMs, whereas physical NICs are hardware
    c. vNICs cannot connect to the internet
    d. Physical NICs cannot be virtualized
    Answer: bwayground+2
11. What is the role of a MAC address in a vNIC?
    a. Identifies the storage volume
    b. Provides a unique network hardware identity for the vNIC
    c. Encrypts network traffic
    d. Links the vNIC to a CPU core
    Answer: boracle
12. Which address type is necessary for direct internet communication via a vNIC?
    a. Private IP only
    b. Public IP address
    c. Virtual storage address
    d. Gateway ID
    Answer: boracle
13. Which OS tool is commonly used in Linux cloud instances to configure and verify secondary vNICs?
    a. iptables
    b. nmcli
    c. awk
    d. dig
    Answer: boracle
14. Which of the following may occur if several vNICs from the same subnet CIDR block are attached to one instance?
    a. Increased disk write speed
    b. Asymmetric routing
    c. VM memory errors
    d. Hypervisor overload
    Answer: boracle
15. What is the maximum number of secondary private IPv4 addresses that can typically be attached to a single vNIC (in Oracle Cloud)?
    a. 2
    b. 8
    c. 64
    d. 256
    Answer: coracle
16. What happens to all attached vNICs when a cloud instance is terminated?
    a. They persist until manually deleted
    b. They are detached and deleted automatically
    c. They are reassigned to other instances
    d. Nothing changes
    Answer: boracle
17. What component determines the maximum number of vNICs attachable to an instance in a cloud platform?
    a. The instance’s memory size
    b. The number of CPUs assigned
    c. The instance shape or type
    d. The OS kernel version
    Answer: coracle
18. vNICs are most directly managed and configured at which cloud layer?
    a. Storage
    b. Networking
    c. Application
    d. Billing
    Answer: bscribd+1
19. Which is NOT a typical use of vNICs in modern public clouds?
    a. Assigning multiple IP addresses to a VM
    b. Isolating network traffic via NSGs
    c. Managing VM memory allocation
    d. Supporting network routing policies
    Answer: coracle
20. What is the effect of disabling the source/destination check on a vNIC?
    a. Network traffic is blocked
    b. VM can act as a router
    c. Public IP addresses are removed
    d. Bandwidth is doubled
    Answer: boracle
21. In which scenario might you use multiple vNICs on a single cloud VM?
    a. To segregate network traffic for security
    b. To increase disk throughput
    c. To manage CPU affinity
    d. To expand VM memory
    Answer: awebasha+1
22. Which cloud resource, often associated with vNICs, allows for setting inbound and outbound network rules?
    a. Instance metadata
    b. Network Security Group (NSG)
    c. Role-based access control
    d. Logging group
    Answer: boracle
23. Which feature allows assigning unique DNS hostnames to a vNIC’s private IP within the VCN?
    a. DHCP option set
    b. Cloud routing table
    c. DNS private view
    d. Network load balancer
    Answer: coracle
24. Why is associating a vNIC with a custom route table useful?
    a. For dynamic CPU allocation
    b. For fine-grained traffic routing beyond subnet routes
    c. For database scaling
    d. For object storage configuration
    Answer: boracle
25. Which of the following would NOT be affected by deleting a vNIC in the cloud?
    a. The VM’s network interface configuration
    b. The MAC address tied to the vNIC
    c. The physical NIC in the host system
    d. Any network security group rules applied to the vNIC
    Answer: cscribd+1
26. What does the acronym “VNIC” stand for?
    a. Virtual Network Internet Card
    b. Virtual Network Interface Card
    c. Visible Network Integrated Connection
    d. Virtual Node Identifier Circuit
    Answer: bwayground+1
27. What is the primary difference between a primary VNIC and a secondary VNIC?
    a. Primary is created during VM creation; secondary is added later
    b. Primary VNIC has no IP address
    c. Secondary VNIC cannot be attached to any instance
    d. Primary VNIC can be removed anytime
    Answer: aoracle
28. Which utility can be used to display all configured vNICs on a Linux-based cloud instance?
    a. ping
    b. nmcli device show
    c. traceroute
    d. whoami
    Answer: boracle
29. Public cloud platforms allow which operation on a secondary vNIC?
    a. Detachment and deletion
    b. VM backup
    c. CPU pinning
    d. Encryption at rest
    Answer: aoracle
30. To prevent asymmetric routing in Linux-based cloud VMs with multiple vNICs, what approach is recommended?
    a. Assign all IPs to the primary vNIC or use policy-based routing
    b. Increase CPU allocations
    c. Install additional storage
    d. Disable hypervisor networking
    Answer: aoracle
31. What does the “shape” of a cloud instance define?
    a. Network protocol
    b. The maximum vNICs, CPU, and memory resources available
    c. Routing table entries
    d. Storage encryption type
    Answer: boracle
32. Which hypervisor setting permits creation of vNICs for VMs in private networks?
    a. Disk caching policy
    b. Network bridge or virtual switch setup
    c. CPU scheduler type
    d. None of the above
    Answer: bwayground+1
33. If a vNIC has multiple secondary IP addresses, what can each IP have?
    a. Separate MAC address
    b. Unique DNS hostname within VCN
    c. Different OS version
    d. CPU affinity setting
    Answer: boracle
34. VNICs must always be attached to which of the following?
    a. An instance (VM or bare metal)
    b. Object storage
    c. Cloud billing system
    d. Scheduler daemon
    Answer: aoracle
35. Which is true regarding vNIC behavior on instance deletion?
    a. VNIC persists for later use
    b. VNIC is invalidated and deleted
    c. VNIC is converted to a physical NIC
    d. VNIC is attached to another VM by default
    Answer: boracle
36. What should be used to set a bandwidth limit per vNIC in standard cloud VMs?
    a. Instance limit setting
    b. Per-vNIC bandwidth setting not typically available
    c. Application-side control only
    d. Hypervisor-overprovisioning
    Answer: boracle
37. In a cloud, which vNIC-specific setting can allow finer network security posture?
    a. Assign per-vNIC NSG rules
    b. Only use DHCP
    c. Pin vNIC to a storage volume
    d. Enable SSH by default
    Answer: aoracle
38. What is required for attaching a vNIC to multiple subnets?
    a. Not supported; a vNIC must be in one subnet
    b. Attach to multiple public IP pools
    c. Assign multiple DNS entries
    d. Reboot the instance
    Answer: aoracle
39. Which command sequence is suggested in RHEL to enable secondary vNICs in cloud?
    a. yum update only
    b. dnf install NetworkManager-config-server and NetworkManager-cloud-setup
    c. mkdir /vnic/config
    d. disable SELinux
    Answer: boracle
40. Why should iSCSI traffic be routed via the primary vNIC in cloud setups?
    a. Security isolation
    b. Ensures correct boot and volume attachment functionality
    c. Increases VM speed
    d. Saves bandwidth cost
    Answer: boracle
41. Which resource identifier does each vNIC have in Oracle Cloud Infrastructure?
    a. IP pool ID
    b. OCID (Oracle Cloud Identifier)
    c. Storage hash
    d. Subnet UUID
    Answer: boracle
42. What happens when a vNIC’s source/destination check is enabled?
    a. The VM drops all packets
    b. VM can only communicate as the source or destination of network traffic
    c. Routing tables are disabled
    d. Bandwidth increases
    Answer: boracle
43. When a public cloud VM has multiple vNICs and each vNIC is attached to a different subnet, what is a key benefit?
    a. Storage redundancy
    b. Network segmentation for security or multi-tier architectures
    c. Faster CPU provisioning
    d. Simplifies OS installation
    Answer: bwebasha+1
44. Primary VNICs in a cloud VM
    a. Can be removed manually
    b. Are created and attached on VM creation, and cannot be removed during instance lifecycle
    c. Must be recreated on reboot
    d. Are not used in IaaS
    Answer: boracle
45. Virtual NICs (vNICs) logically connect to what in virtualized environments?
    a. Virtual switches or bridges
    b. Hyperconverged storage arrays
    c. Application firewalls only
    d. Direct internet uplinks only
    Answer: ascribd+1
46. In cloud platforms, what is a limitation of adding vNICs from the same subnet to a VM?
    a. Increased CPU usage
    b. Potential routing issues (asymmetric routing)
    c. Inaccessible storage devices
    d. No effect at all
    Answer: boracle
47. Which of the following is a best practice for IP address assignment to vNICs in cloud architectures?
    a. Use static assignment outside of subnet range
    b. Assign IPs from the subnet the vNIC resides in
    c. Randomize from any cloud region
    d. Assign only to secondary vNICs
    Answer: boracle
48. To effectively manage network traffic, vNICs may be incorporated into which of the following?
    a. Security lists or NSGs for policy enforcement
    b. Local VM storage pools
    c. CPU scheduler settings
    d. Cloud billing groupings
    Answer: aoracle
49. Can a vNIC in a cloud instance exist unattached to an instance?
    a. Yes
    b. No
    c. Only in private cloud
    d. Only if encrypted
    Answer: boracle
50. What determines whether a vNIC gets a public IPv4 address?
    a. Subnet policy and user configuration at time of attachment
    b. Host system MAC address pool
    c. Default setting for all vNICs
    d. DNS server in the cloud
    Answer: aoracle

1. https://docs.oracle.com/en-us/iaas/Content/Network/Tasks/managingVNICs.htm
2. https://wayground.com/admin/quiz/5f87f6c8ef85f3001b60fc3a/cloud-architecture
3. https://www.scribd.com/document/860654151/Quiz
4. https://www.webasha.com/blog/top-50-virtualization-interview-questions-and-answers
5. https://www.sanfoundry.com/1000-cloud-computing-questions-answers/
6. https://testbook.com/objective-questions/mcq-on-cloud-technology–5eea6a0d39140f30f369e30f
7. https://www.watelectronics.com/mcq/cloud-computing/
8. https://www.sanfoundry.com/cloud-computing-questions-answers-network-capacity/
9. https://www.scribd.com/document/714050526/Cloud-Computing-Mcqs
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14. https://www.studocu.com/row/document/ibrahim-badamasi-babangida-university/computer-organisation-architecture/cloud-computing-mcq/16276174
15. https://www.interviewbit.com/cloud-computing-interview-questions/
16. https://www.cloudskillsboost.google/course_templates/38/quizzes/368445
17. https://examradar.com/fundamentals-of-cloud-computing-and-cloud-services-mcqs/
18. https://www.geeksforgeeks.org/interview-experiences/cloud-computing-interview-questions/
19. https://itexamanswers.net/it-essentials-8-module-9-quiz-answers-virtualization-and-cloud-computing.html
20. https://www.freshersnow.com/cloud-computing-mcqs-and-answers-with-explanation/