MCQs

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1. What is a Virtual Network Interface Card (vNIC)?
   a. A hardware device that connects a PC to a network
   b. A software-based emulation of a network interface card
   c. A physical cable used in networking
   d. A wireless access point
   Answer: b. A software-based emulation of a network interface cardalibabacloud
2. vNICs are typically used in which computing environments?
   a. Standalone desktop PCs
   b. Virtualized and cloud environments
   c. Analog networks
   d. Circuit-switched networks
   Answer: b. Virtualized and cloud environmentsalibabacloud
3. What layer of the OSI model do vNICs operate at?
   a. Application layer
   b. Transport layer
   c. Data link layer
   d. Network layer
   Answer: c. Data link layeralibabacloud
4. What is a key advantage of using vNICs in a virtualized environment?
   a. Reduced hardware costs
   b. Slower network speeds
   c. Increased complexity
   d. Less scalability
   Answer: a. Reduced hardware costsalibabacloud
5. Upon creation, a vNIC must be associated with what?
   a. A storage pool
   b. A network bridge or virtual switch
   c. A graphics card
   d. A serial port
   Answer: b. A network bridge or virtual switchnetiq
6. How many primary private IP addresses does a VNIC typically have in Oracle Cloud?
   a. Zero
   b. One
   c. Unlimited
   d. Four
   Answer: b. Oneoracle
7. Which address uniquely identifies a vNIC on a network?
   a. IP address
   b. DNS name
   c. MAC address
   d. Host name
   Answer: c. MAC addressoracle
8. vNICs can belong to which type of security structure?
   a. Network Security Groups (NSGs)
   b. Graphics Groups
   c. Storage Groups
   d. Security Domains
   Answer: a. Network Security Groups (NSGs)oracle
9. What setting determines if a vNIC checks the source or destination of traffic?
   a. Firewall flag
   b. Source/destination check flag
   c. Routing flag
   d. NAT flag
   Answer: b. Source/destination check flagoracle
10. What can be uniquely assigned to each vNIC for identification?
    a. Hostname
    b. VLAN tag
    c. OCID (Oracle Cloud Identifier)
    d. All of the above
    Answer: d. All of the aboveoracle
11. The primary vNIC in an instance is
    a. Removable
    b. Automatically created during instance setup
    c. Optional
    d. Hardware-dependent
    Answer: b. Automatically created during instance setuporacle
12. vNICs can be attached to which type of network device for connectivity?
    a. Network switch
    b. Virtual network bridge
    c. Storage array
    d. Wireless access point
    Answer: b. Virtual network bridgenetiq
13. What is necessary for a VM to communicate over a network using a vNIC?
    a. Manual MAC address entry
    b. Assignment to a vBridge
    c. Physical network port
    d. Direct hardware connection
    Answer: b. Assignment to a vBridgenetiq
14. vNIC objects discovered on a VM are typically
    a. Named based on creation order
    b. Always named “vNIC”
    c. Assigned by user input only
    d. Unnamed
    Answer: a. Named based on creation ordernetiq
15. Each vNIC on a VM can connect to
    a. Only one network at a time
    b. Multiple networks depending on design
    c. No networks
    d. Storage traffic only
    Answer: b. Multiple networks depending on designnetiq
16. Which statement about secondary vNICs is true?
    a. They are fixed and permanent
    b. Can be detached or deleted from an instance
    c. Should not be used in cloud setups
    d. Are hardware-based
    Answer: b. Can be detached or deleted from an instanceoracle
17. What is the maximum number of optional secondary private IPv4 addresses on a vNIC in Oracle Cloud?
    a. 2
    b. 8
    c. 64
    d. 128
    Answer: c. 64oracle
18. Which address type is supported for vNICs in all commercial and government regions?
    a. IPv4 only
    b. IPv6 only
    c. Both IPv4 and IPv6
    d. DNS only
    Answer: c. Both IPv4 and IPv6oracle
19. What protocol do vNICs typically use for Layer 2 communication?
    a. HTTP
    b. TCP/IP
    c. Ethernet
    d. SMTP
    Answer: c. Ethernetalibabacloud
20. Why might a vNIC be assigned a VLAN tag by Oracle?
    a. For bare metal instances
    b. For instance storage mapping
    c. To assign DNS names
    d. To manage user roles
    Answer: a. For bare metal instancesoracle
21. What happens if the only vNIC on an instance is detached?
    a. Instance loses network connectivity
    b. It remains connected
    c. A new vNIC is automatically attached
    d. Nothing happens
    Answer: a. Instance loses network connectivityoracle
22. In cloud environments, each instance has which of the following?
    a. Physical NIC only
    b. Primary vNIC
    c. No vNIC
    d. Tertiary vNIC
    Answer: b. Primary vNICalibabacloud+1
23. What allows vNICs to override subnet-level routing decisions?
    a. Custom route table association
    b. VLAN tagging
    c. MAC filtering
    d. DNS pointers
    Answer: a. Custom route table associationoracle
24. Which feature of vNICs allows isolation and enhanced security in cloud networks?
    a. Source/destination check
    b. NSG membership
    c. OCID
    d. DHCP
    Answer: b. NSG membershiporacle
25. Which statement is false regarding vNICs?
    a. They are software emulated interfaces
    b. They always require dedicated hardware
    c. Can be managed entirely through cloud APIs
    d. Enable scalability in VMs
    Answer: b. They always require dedicated hardwarealibabacloud
26. Virtual NICs primarily solve problems related to
    a. Graphics acceleration
    b. Multiple VMs sharing one physical NIC
    c. RAM allocation
    d. Firmware upgrades
    Answer: b. Multiple VMs sharing one physical NICalibabacloud
27. How does a vNIC improve scalability in virtual environments?
    a. By enabling network isolation for each VM
    b. By reducing the number of IP addresses
    c. By limiting connectivity
    d. By deregistering MAC addresses
    Answer: a. By enabling network isolation for each VMalibabacloud
28. Which type of address is always associated with a vNIC?
    a. MAC address
    b. IPv7
    c. DNS name
    d. Gateway address
    Answer: a. MAC addresstestbook+1
29. Which of the following does NOT apply to a vNIC?
    a. Can be created and deleted in software
    b. Emulates physical NIC behavior
    c. Used exclusively for internet devices
    d. Participates in network segmentation
    Answer: c. Used exclusively for internet devicesalibabacloud
30. Which is an essential function of vNICs in virtual machine networking?
    a. Encapsulation
    b. Address assignment
    c. Routing
    d. All of the above
    Answer: d. All of the abovewatelectronics+1
31. vNICs can be monitored for performance using
    a. Network performance tools
    b. Disk monitoring tools
    c. Printer logs
    d. OSI reference model
    Answer: a. Network performance toolsalibabacloud
32. Which setting is crucial in preventing traffic spoofing on vNICs?
    a. VLAN isolation
    b. Source/destination check
    c. DNS filtering
    d. NAT traversal
    Answer: b. Source/destination checkoracle
33. In a cloud setup, what is the advantage of assigning secondary IPs to a vNIC?
    a. Increases routing complexity
    b. Allows multi-tenancy
    c. Reduces network performance
    d. Disables virtual machine mobility
    Answer: b. Allows multi-tenancyoracle
34. When a VM is migrated to another host, what happens to its vNIC?
    a. It loses connectivity
    b. It can be reattached or migrated automatically
    c. It requires manual hardware installation
    d. It must be renamed
    Answer: b. It can be reattached or migrated automaticallyalibabacloud
35. What defines the limit for the number of vNICs a VM can have?
    a. MAC Address range
    b. Cloud provider’s policies and instance type
    c. OSI model
    d. Subnet size
    Answer: b. Cloud provider’s policies and instance typealibabacloud+1
36. vNICs enable what kind of traffic isolation within a cloud subnet?
    a. Physical isolation
    b. Logical isolation
    c. Geographic isolation
    d. Network inactivity
    Answer: b. Logical isolationalibabacloud
37. Which statement is true about vNIC detachments?
    a. Primary vNICs can’t be detached
    b. All vNICs must be hardware-based
    c. Detaching a vNIC does not impact connectivity
    d. Only storage vNICs can be detached
    Answer: a. Primary vNICs can’t be detachedoracle
38. Which of the following uniquely identifies a vNIC resource in Oracle Cloud?
    a. MAC address
    b. OCID
    c. Hostname
    d. Network Security Group
    Answer: b. OCIDoracle
39. What happens to a secondary vNIC when it is detached from a VM?
    a. It persists in the subnet
    b. It is deleted
    c. It is transferred to another VM
    d. It becomes a physical NIC
    Answer: b. It is deletedoracle
40. vNICs enhance network performance in virtual environments by
    a. Distributing traffic among multiple VMs
    b. Reducing broadcast domain size
    c. Isolating broadcast traffic
    d. Creating layer 4 connections
    Answer: a. Distributing traffic among multiple VMsalibabacloud
41. Which information is stored within a vNIC configuration object?
    a. IP addresses
    b. MAC address
    c. Attached network bridge
    d. All of the above
    Answer: d. All of the abovenetiq
42. vNICs are discovered by orchestration systems during
    a. Instance backup
    b. Discover VM Images job
    c. Manual log parsing
    d. Storage mapping operation
    Answer: b. Discover VM Images jobnetiq
43. What role does a vNIC play in a VM’s connectivity?
    a. It enables communication with other VMs and networks
    b. It disables all network tasks
    c. It only routes traffic to storage devices
    d. It reduces available bandwidth
    Answer: a. It enables communication with other VMs and networksnetiq+1
44. Which option best describes how multiple vNICs are represented in orchestration consoles?
    a. Grouped by instance name
    b. Indicated by MAC address
    c. Sequentially named (e.g., vmname_vnic1, vmname_vnic2)
    d. Registered in the OS registry
    Answer: c. Sequentially named (e.g., vmname_vnic1, vmname_vnic2)netiq
45. Why would an administrator assign multiple vNICs to a single VM?
    a. To support traffic for multiple networks
    b. To increase disk speed
    c. To enable faster CPU computations
    d. None of the above
    Answer: a. To support traffic for multiple networksnetiq+1
46. What must be true for a VM to use a vNIC for network connectivity?
    a. vNIC must be attached to a virtual bridge
    b. VM must have no other network adapters
    c. vNIC must have static IP only
    d. VM must not use MAC address
    Answer: a. vNIC must be attached to a virtual bridgenetiq
47. What determines the network to which a vNIC connects?
    a. vBridge or virtual switch assignment
    b. Physical network cable
    c. Graphic adapter setup
    d. CPU type
    Answer: a. vBridge or virtual switch assignmentnetiq
48. Which function is exclusive to vNICs compared to physical NICs?
    a. Software-only creation, modification, and deletion
    b. Hardware transmission
    c. Analog conversion
    d. Direct storage access
    Answer: a. Software-only creation, modification, and deletionalibabacloud
49. When provisioning a VM, what happens to its vNICs?
    a. They are discovered and associated with the VM
    b. They are ignored
    c. They are reassigned to storage bridges
    d. They receive unique CPU identifiers
    Answer: a. They are discovered and associated with the VMnetiq
50. What does the acronym vNIC stand for?
    a. Virtual Network Interface Card
    b. Virtual Node Internet Card
    c. Virtual Numbered Interface Connection
    d. Virtual Network Intranet Controller
    Answer: a. Virtual Network Interface Cardalibabacloud

1. https://www.alibabacloud.com/tech-news/a/i/o_virtualization/gunqxpafh2-virtual-nics-the-heart-of-network-io-virtualization
2. https://www.netiq.com/documentation/cloud-manager-2-5/ncm-reference/data/bnu2clu.html
3. https://docs.oracle.com/en-us/iaas/Content/Network/Tasks/managingVNICs.htm
4. https://testbook.com/question-answer/a-network-interface-card-nic-contains–621e14fa98a6a2e663a085fe
5. https://www.watelectronics.com/mcq/network-interface-card/
6. https://www.sanfoundry.com/network-security-questions-answers-network-hardware/
7. https://www.interviewbit.com/computer-network-mcq/
8. https://www.sanfoundry.com/computer-network-questions-answers/
9. https://www.youtube.com/watch?v=GlaFb8olt6g
10. https://www.uninets.com/blog/computer-networks-mcq
11. https://testbook.com/objective-questions/mcq-on-computer-networks–5eea6a0939140f30f369d8f8
12. https://testbook.com/question-answer/network-interface-card-is-an-device–602cfbc121a3cd0bedfdb234
13. https://www.scribd.com/document/802111228/Computer-Networking-MCQ-with-Answers1
14. https://reck.ac.in/wp-content/uploads/2023/04/DCN_MCQ-Ashwini-.pdf
15. https://csiplearninghub.com/introduction-to-computer-networks-class-12-mcq/
16. https://learn.microsoft.com/en-us/windows-hardware/drivers/network/virtualized-networking-concepts-and-terms
17. https://www.scribd.com/document/728308573/300-TOP-Hardware-Networking-MCQs-and-Answers-PDF
18. https://www.geeksforgeeks.org/computer-networks/fundamentals-of-virtual-networking/
19. https://askfilo.com/user-question-answers-smart-solutions/a-tick-the-correct-option-1-which-of-the-following-is-a-3338313735393736
20. https://developers.redhat.com/blog/2018/10/22/introduction-to-linux-interfaces-for-virtual-networking