Which statement is true about an IPsec/GRE tunnel?

Which of the following is a GRE Tunnel characteristic?

What are the four main steps in configuring a GRE tunnel over IPsec on Cisco routers?
(Choose Four)

A network administrator uses GRE over IPSec to connect two branches together via VPN tunnel.
Which one of the following is the reason for using GRE over IPSec?

When policy-based routing (PBR) is being configured,

Which three criteria can the set command specify? (Choose three.)

Router R1, a branch router, connects to the Internet using DSL. Some traffic flows through a GRE
and IPsec tunnel, over the DSL connection, destined for an Enterprise network. Which of the
following answers best describes the router’s logic that tells the router, for a given packet, to apply
GRE encapsulation to the packet?

Router R1, a branch router, connects to the Internet using DSL. Some traffic flows through a GRE
and IPsec tunnel, over the DSL connection, and into the core of an Enterprise network. The
branch also allows local hosts to communicate directly with public sites in the Internet over this
same DSL connection. Which of the following answers defines how the branch NAT config avoids
performing NAT for the Enterprise directed traffic but does perform NAT for the Internet-directed
traffic?

Refer to the exhibit.

A new TAC engineer came to you for advice. A GRE over IPsec tunnel was configured, but the
tunnel is not coming up.
What did the TAC engineer configure incorrectly?

Refer to the exhibit.

A new TAC engineer came to you for advice. A GRE over IPsec tunnel was configured, but the
tunnel is not coming up.
What did the TAC engineer configure incorrectly?

Refer to the exhibit.

Given the partial configuration in the exhibit, which IPv6 statement is true?