Which two options are two functions of the data center access layer? (Choose two.)
A. high data transfer rate
B. packet filtering
C. server connections
D. QoS policy enforcement
E. high network fault tolerance
F. VLAN creation
Which two options are two functions of the data center access layer?
Franky I think It is A and E
The correct answer is VLAN and QOS both of which are set at L2 and at the access layer. Servers can be connected but so can phones!
VLAN creation is a necessary function of the access layer switches, no matter it is in a data centre or in other non-DC switch block.
The Data Center Access layer provides Layer 2, Layer 3, and mainframe connectivity. The design of the Data Center Access layer varies depending on whether Layer 2 or Layer 3 access switches are used; it is typically built with high-performance, low-latency Layer 2 switches, allowing better sharing of service devices across multiple servers and allowing the use of Layer 2 clustering, which requires the servers to be Layer 2-adjacent. With Layer 2 access switches, the default gateway for the servers can be configured at the access or aggregation layer.
Agreeing with (C) Server connections, but not so sure about VLAN creation (F), VLAN extension – sure, maybe a trick question.
Servers can be single- or dual-attached; with dual-attached NICs in the servers, a VLAN or trunk is required between the two redundant access layer switches to support having a single IP address on the two server links to two separate switches. The default gateway is implemented at the access layer.
A mix of both Layer 2 and Layer 3 access switches using one rack unit (1RU) and modular platforms results in a flexible solution and allows application environments to be optimally positioned.