Which of the following technologies is used to attach multiple guest operating systems to a single physical network port?
A.
Virtual switch B.
FCoE C.
VPC D.
vSAN E.
Fibre Channel.
A.
Which of the following technologies is used to attach multiple guest operating systems to a single physical network port?
A.
Virtual switch
B.
FCoE
C.
VPC
D.
vSAN
E.
Fibre Channel.
A.
The correct answer is A. Virtual switch.
A virtual switch is a networking device that allows multiple virtual machines to communicate with each other and with the external network using a single physical network interface card (NIC). It operates at Layer 2 of the OSI model and provides the same functionality as a physical switch, including the ability to create VLANs, implement Quality of Service (QoS) policies, and configure port security.
When multiple guest operating systems are installed on a physical server, each guest requires its own network connection. However, it is not practical to have multiple physical NICs for each guest, as this would be expensive and difficult to manage. Instead, a virtual switch is used to create virtual NICs (vNICs) for each guest, which are mapped to a single physical NIC. The virtual switch then directs network traffic between the guests and the external network.
Virtual switches are commonly used in virtualization technologies such as VMware, Hyper-V, and KVM. They provide flexibility and scalability, allowing multiple guests to share network resources and simplifying network administration. However, it is important to configure virtual switches correctly to ensure proper network performance and security.