Which two statements about designing the Data Center Access layer are correct? (Choose two.)

A.
Multiport NIC servers should each have their own IP address.

B.
Layer 3 connectivity should never be used in the access layer.

C.
Layer 2 connectivity is primarily implemented in the access layer.

D.
Multiport NIC servers should never be used in the access layer.

E.
Layer 2 clustering implementation requires servers to be Layer 2 adjacent.

Explanation:

User access is primarily layer 2 in nature, layer 2 clustering is possible only in layer 2
Here is the from the Cisco press CCDA certification guide
Figure 4-8. Enterprise Data Center Infrastructure Overview

Defining the DC Access Layer
The data center access layer’s main purpose is to provide Layer 2 and Layer 3 physical port
density for various servers in the data center. In addition, data center access layer switches
provide high-performance, low-latency switching and can support a mix of oversubscription
requirements. Both Layer 2 and Layer 3 access (also called routed access) designs are available,
but most data center access layers are built using Layer 2 connectivity. The Layer 2 access design
uses VLAN trunks upstream, which allows data center aggregation services to be shared across
the same VLAN and across multiple switches. Other advantages of Layer 2 access are support for
NIC teaming and server clustering that requires network connections to be Layer 2 adjacent or on
the same VLAN with one another.
CCDA 640-864 Official Certification Guide Fourth Edition, Chapter 4