Elliptic curve cryptography is a stronger more efficient cryptography method meant to replace which current encryption technology?
Answer(s): B
Compared to RSA, the prevalent public-key cryptography of the Internet today, Elliptic Curve Cryptography (ECC) offers smaller key sizes, faster computation,as well as memory, energy and bandwidth savings and is thus better suited forsmall devices.
What is the result of running the crypto isakmp key ciscXXXXXXXX address 172.16.0.0 command?
Answer(s): C
Configure a Crypto ISAKMP KeyIn order to configure a preshared authentication key, enter the crypto isakmp key command in global configuration mode:crypto isakmp key cisco123 address 172.16.1.1https://community.cisco.com/t5/vpn/isakmp-with-0-0-0-0-dmvpn/td-p/4312380 It is a bad practice but it is valid. 172.16.0.0/16 the full range will be accepted as possible PEER https://www.examtopics.com/discussions/cisco/view/46191-exam-350-701-topic-1-question-71- discussion/#:~:text=Command%20reference%20is%20not%20decisive,172.16.1.128%20cisco123%0A CSR%2D1(config)%23Testing without a netmask shows that command interpretation has a preference for /16 and /24. CSR-1(config)#crypto isakmp key cisco123 address 172.16.0.0 CSR-1(config)#do show crypto isakmp key | i cisco default 172.16.0.0 [255.255.0.0] cisco123CSR-1(config)#no crypto isakmp key cisco123 address 172.16.0.0 CSR-1(config)#crypto isakmp key cisco123 address 172.16.1.0 CSR-1(config)#do show crypto isakmp key | i cisco default 172.16.1.0 [255.255.255.0] cisco123CSR-1(config)#no crypto isakmp key cisco123 address 172.16.1.0 CSR-1(config)#crypto isakmp key cisco123 address 172.16.1.128 CSR-1(config)#do show crypto isakmp key | i cisco default 172.16.1.128 cisco123 CSR-1(config)#
Which technology must be used to implement secure VPN connectivity among company branches over a private IP cloud with any-to-any scalable connectivity?
Answer(s): D
Cisco`s Group Encrypted Transport VPN (GETVPN) introduces the concept of a trusted group to eliminate point-to-point tunnels and their associated overlay routing. All group members (GMs) share a common security association (SA), also known as a group SA. This enables GMs to decrypt traffic that was encrypted by any other GM.GETVPN provides instantaneous large-scale any-to-any IP connectivity using a group IPsec security paradigm.
https://www.cisco.com/c/dam/en/us/products/collateral/security/group-encrypted- transport-vpn/GETVPN_DIG_version_2_0_External.pdf
Which two conditions are prerequisites for stateful failover for IPsec? (Choose two)
Answer(s): C,E
Stateful failover for IP Security (IPsec) enables a router to continue processing and forwarding IPsec packets after a planned or unplanned outage occurs. Customers employ a backup (secondary) router that automatically takes over the tasks of the active (primary) router if the active router loses connectivity for any reason. This failover process is transparent to users and does not require adjustment or reconfiguration of any remote peer.Stateful failover for IPsec requires that your network contains two identical routers that are available to be either the primary or secondary device. Both routers should be the same type of device, have the same CPU and memory, and have either no encryption accelerator or identical encryption accelerators.Prerequisites for Stateful Failover for IPsecComplete, Duplicate IPsec and IKE Configuration on the Active and Standby Devices This document assumes that you have a complete IKE and IPsec configuration. The IKE and IPsec configuration that is set up on the active device must be duplicated on the standby device.That is, the crypto configuration must be identical with respect to Internet Security Association and KeyManagement Protocol (ISAKMP) policy, ISAKMP keys (preshared), IPsec profiles, IPsec transform sets, all crypto map sets that are used for stateful failover, all access control lists (ACLs) that are used in match address statements on crypto map sets, all AAA configurations used for crypto, client configuration groups, IP local pools used for crypto, and ISAKMP profiles.
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_conn_vpnav/configuration/15- mt/sec-vpnavailability-15-mt-book/sec-state-fail-ipsec.html Although the prerequisites only stated that "Both routers should be the same type of device" but in the"Restrictions for Stateful Failover for IPsec" section of the link above, it requires "Both the active and standby devices must run the identical version of the Cisco IOS software" so answer E is better than answer B.
Which VPN technology can support a multivendor environment and secure traffic between sites?
FlexVPN is an IKEv2-based VPN technology that provides several benefits beyond traditional site-to- site VPN implementations. FlexVPN is a standards-based solution that can interoperate with non- Cisco IKEv2implementations. Therefore FlexVPN can support a multivendor environment. All of the three VPN technologies support traffic between sites (site-to-site or spoke-to-spoke).
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