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2021 Nov 350-018 braindump:

Q101. What is the size of a point-to-point GRE header, and what is the protocol number at the IP layer? 

A. 8 bytes, and protocol number 74 

B. 4 bytes, and protocol number 47 

C. 2 bytes, and protocol number 71 

D. 24 bytes, and protocol number 1 

E. 8 bytes, and protocol number 47 

Answer: B 


Q102. Which two statements about DHCP are true? (Choose two.) 

A. DHCP uses TCP port 67. 

B. DHCP uses UDP ports 67 and 68. 

C. The DHCPDiscover packet has a multicast address of 239.1.1.1. 

D. DHCPRequest is a broadcast message. 

E. The DHCPOffer packet is sent from the DHCP server. 

Answer: BE 


Q103. To prevent a potential attack on a Cisco IOS router with the echo service enabled, what action should you take? 

A. Disable the service with the no ip echo command. 

B. Disable the service with the no echo command. 

C. Disable tcp-small-servers. 

D. Disable this service with a global access-list. 

Answer: C 


Q104. Which additional configuration component is required to implement a MACSec Key Agreement policy on user-facing Cisco Catalyst switch ports? 

A. PKI 

B. TACACS+ 

C. multi-auth host mode 

D. port security 

E. 802.1x 

Answer: E 


Q105. Which type of VPN is based on the concept of trusted group members using the GDOI key management protocol? 

A. DMVPN 

B. SSLVPN 

C. GETVPN 

D. EzVPN 

E. MPLS VPN 

F. FlexVPN 

Answer: C 


Improve ccie security 350-018:

Q106. Refer to the exhibit. 

A customer has an IPsec tunnel that is configured between two remote offices. The customer is seeing these syslog messages on Router B: 

%CRYPTO-4-PKT_REPLAY_ERR: decrypt: replay check failed connection id=x, sequence number=y 

What is the most likely cause of this error? 

A. The customer has an LLQ QoS policy that is configured on the WAN interface of Router A. 

B. A hacker on the Internet is launching a spoofing attack. 

C. Router B has an incorrectly configured IP MTU value on the WAN interface. 

D. There is packet corruption in the network between Router A and Router B. 

E. Router A and Router B are not synchronized to the same timer source. 

Answer: A 


Q107. Refer to the exhibit. 

What is the reason for the failure of the DMVPN session between R1 and R2? 

A. tunnel mode mismatch 

B. IPsec phase-1 configuration is missing peer address on R2 

C. IPsec phase-1 policy mismatch 

D. IPsec phase-2 policy mismatch 

E. incorrect tunnel source interface on R1 

Answer: E 


Q108. Refer to the exhibit. 

To configure the Cisco ASA, what should you enter in the Name field, under the Group Authentication option for the IPSec VPN client? 

A. group policy name 

B. crypto map name 

C. isakmp policy name 

D. crypto ipsec transform-set name 

E. tunnel group name 

Answer: E 


Q109. Which protocol provides the same functions in IPv6 that IGMP provides in IPv4 networks? 

A. ICMPv6 

B. ND 

C. MLD 

D. TLA 

Answer: C 


Q110. Which field in an HTTPS server certificate is compared to a server name in the URL? 

A. Common Name 

B. Issuer Name 

C. Organization 

D. Organizational Unit 

Answer: A