Which Cisco adaptive security appliance command can be used to view the count of all active VPN sessions?

After completing a site-to-site VPN setup between two routers, application performance over the tunnel is slow. You issue the show crypto ipsec sa command and
see the following output. What does this output suggest?
interfacE. Tunnel100
Crypto map tag: Tunnel100-head-0, local addr 10.10.10.10
protected vrF. (none)
local ident (addr/mask/prot/port): (10.10.10.10/255.255.255.255/47/0) remote ident (addr/mask/prot/port): (10.20.20.20/255.255.255.255/47/0) current_peer
209.165.200.230 port 500
PERMIT, flags={origin_is_acl,}
#pkts encaps: 34836, #pkts encrypt: 34836, #pkts digest: 34836 #pkts decaps: 26922, #pkts decrypt: 19211, #pkts verify: 19211 #pkts compresseD. 0, #pkts
decompresseD. 0
#pkts not compresseD. 0, #pkts compr. faileD. 0
#pkts not decompresseD. 0, #pkts decompress faileD. 0 #send errors 0, #recv errors 0

Which adaptive security appliance command can be used to see a generic framework of the requirements for configuring a VPN tunnel between an adaptive
security appliance and a Cisco IOS router at a remote office?

You are troubleshooting a site-to-site VPN issue where the tunnel is not establishing. After issuing the debug crypto ipsec command on the headend router, you see
the following output.
What does this output suggest?
1d00h: IPSec (validate_proposal): transform proposal (port 3, trans 2, hmac_alg 2) not supported
1d00h: ISAKMP (0:2) : atts not acceptable. Next payload is 0 1d00h: ISAKMP (0:2) SA not acceptable

You are troubleshooting a site-to-site VPN issue where the tunnel is not establishing. After issuing the debug crypto isakmp command on the headend router, you
see the following output.
What does this output suggest?
1d00h: ISAKMP (0:1): atts are not acceptable. Next payload is 0 1d00h: ISAKMP (0:1); no offers accepted!
1d00h: ISAKMP (0:1): SA not acceptable!
1d00h: %CRYPTO-6-IKMP_MODE_FAILURE. Processing of Main Mode failed with peer at 10.10.10.10

Refer to the exhibit.

The IKEv2 tunnel between Router1 and Router2 is failing during session establishment. Which action will allow the session to establish correctly?

An administrator wishes to limit the networks reachable over the Anyconnect VPN tunnels. Which configuration on the ASA will correctly limit the networks
reachable to 209.165.201.0/27 and 209.165.202.128/27?

Which encryption and authentication algorithms does Cisco recommend when deploying a Cisco NGE supported VPN solution?

Which algorithm is replaced by elliptic curve cryptography in Cisco NGE?

Which Cisco firewall platform supports Cisco NGE?