Which methods can an administrator implement to provide higher security within a management network?
(Select two.)

A.
SNMPv3

B.
community strings

C.
NTP

D.
isolated VLAN

E.
port mirroring

Explanation:

A: Simple Network Management Protocol (SNMP) is an Internet-standard protocol for collecting and organizing information about managed devices on IP networks and for modifying that information to change device behavior.
Three significant versions of SNMP have been developed and deployed. SNMPv1 is the original version of the protocol. More recent versions, SNMPv2c and SNMPv3, feature improvements in performance, flexibility and security.
B: The SNMP Read-Only Community String is like a password. It is sent along with each SNMP Get-Request and allows (or denies) access to device. Most network vendors ship their equipment with a default password of
“public”. (This is the so-called “default public community string”.) Many network administrators change the community string to keep intruders from getting information about the network setup. This is a good idea. Even if it’s only read-access, an intruder can learn a lot about a network that could be used to compromise it.
References:
https://en.wikipedia.org/wiki/Simple_Network_Management_Protocol https://community.helpsystems.com/knowledge-base/intermapper/snmp/snmp-community-strings/