Exam 350-401 topic 1 question 61 discussion

Thinking it is A and B. Based off the reference link. Because the vswitch is software based, as broadcasts are received the vswitch must interrupt the server CPU to change contexts to enable the vswitch to process the packet. After the vswitch has determined that the packet is a broadcast, it copies the packet to all the VMNICs, which then pass the broadcast packet up the stack to process. This processing overhead can have a tangible effect on overall server performance if a single domain is hosting a large number of virtual machines

B, C It is asking what causes it not effect.

A & B are correct

Just based on text interpretation considerations: asking for cause, not side effect.

A & B are correct

B. The Layer 2 domain can be large in virtual machine environments. In virtualized environments, especially in larger deployments, the Layer 2 domain (broadcast domain) can expand significantly due to multiple virtual machines residing on the same subnet or VLAN. This enlargement of the Layer 2 domain can increase broadcast traffic. C. Virtual machines communicate primarily through broadcast mode. In some cases, certain applications or protocols utilized within virtual machines might heavily rely on broadcast communication for tasks such as service discovery, network resolution, or client-server interaction. This reliance on broadcast-based communication contributes to broadcast traffic within the virtualized environment.

* from Google bard * The two reasons why broadcast radiation is caused in the virtual machine environment are: The Layer 2 domain can be large in virtual machine environments. (B) Virtual machines communicate via broadcast too much. (C) Explanation: (B): Virtual machines can be easily created and destroyed, and they can be moved around between different physical hosts. This can lead to large Layer 2 domains, which is a major factor in broadcast radiation. (C): Virtual machines often communicate through broadcast packets, such as Address Resolution Protocol (ARP) broadcasts and DHCP requests. This can flood the network with broadcast traffic, leading to broadcast radiation.

The two reasons why broadcast radiation is caused in the virtual machine environment are: B. The Layer 2 domain can be large in virtual machine environments: In a physical network, broadcast traffic is typically limited to a single LAN segment, which can be controlled through the use of routers or VLANs. However, in a virtual machine environment, multiple VMs can be connected to the same virtual switch, which creates a larger Layer 2 broadcast domain. C. Virtual machines communicate primarily through broadcast mode: In a traditional physical network, communication between devices typically occurs through unicast or multicast traffic. However, in a virtual machine environment, communication between VMs often relies on broadcast traffic, which can be less efficient and create more network traffic than necessary. This is due to the fact that virtual machines are often configured to use broadcast traffic for tasks such as address resolution or service discovery.

The question is asking for "reasons". Only B and C addresses that. Answer A is a "result" of broadcast radiation. D and E are just dead wrong.

The two possible reasons why broadcast radiation can occur in a virtual machine (VM) environment are: B. The Layer 2 domain can be large in virtual machine environments. D. Communication between vSwitch and network switch is broadcast based. Explanation :- B. In VM environments, the Layer 2 domain can be large, as multiple VMs may be connected to the same virtual switch. This can lead to broadcast radiation, as broadcast packets sent by one VM are replicated to all the other VMs on the same virtual switch. D.Communication between vSwitch and network switch is typically based on Ethernet frames, which use broadcast for certain types of traffic, such as ARP requests and DHCP broadcasts. This can lead to broadcast radiation in VM environments.

A is true, but it's not the cause of broadcast radiation. It is the effect. So, i think B and C

A & B - Correct Answer. INCORRECT: Virtual machines communicate primarily through broadcast mode

AB is right

AB is the answer

Upfront: This question is just bad. I think it is B and C. While C sounds strange at first glance... when VMs are using a lot of broadcasts, then there is broadcast radiation. If you take this answer as simple as it is, it sound logical...

Selected Answer: AB interrupting the server CPU to process the packet causes broadcast radiation in a (VM) environment because it can result in increased traffic and congestion on the network (answer A). on the other side all VMs communication are broadcast based but Broadcast radiation results in increased traffic and congestion on the network, there is no problem with broadcast unless there is increased traffic and congestion on the network (Answer C) because of that I think the answer is : A and B

C?... all VMs communication are broadcast based, yet not every VM environment suffer from Broadcast Radiation A - B are the answer