What are three modular Layer 3 processes in Cisco Nexus Operating System? (Choose three.)

A.
UDLD

B.
PIM

C.
HSRP

D.
STP

E.
OSPF

F.
Cisco Discovery Protocol

Explanation:
“PIM is IP routing protocol-independent and can leverage whichever unicast routing protocols are
used to
populate the unicast routing table, including Enhanced Interior Gateway Routing Protocol
(EIGRP), Open
Shortest Path First (OSPF), Border Gateway Protocol (BGP), and static routes. PIM uses this
unicast routing information to perform the multicast forwarding function. Although PIM is called a
multicast routing protocol, it actually uses the unicast routing table to perform the RPF check
function instead of building up a completely independent multicast routing table. Unlike other
routing protocols, PIM does not send and receive routing updates between routers.”
http://www.cisco.com/en/US/docs/ios/solutions_docs/ip_multicast/White_papers/mcst_ovr.html#w
p1009068
“Hot Standby Router Protocol (HSRP) is a Cisco proprietary redundancy protocol for establishing
a fault tolerant default gateway.
In the configuration procedures, the specified interface must be a Layer 3 interface:”
http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_55_se/configur
ation/guide/swhsrp.html
OSPF (Open Shortest Path First) – routing protocol.