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2021 Oct 400-101 cisco ccie written:
Q91. How many address families can a single OSPFv3 instance support?
A. 1
B. 2
C. 5
D. 10
Answer: A
Q92. A company has just opened two remote branch offices that need to be connected to the corporate network. Which interface configuration output can be applied to the corporate router to allow communication to the remote sites?
A. interface Tunnel0
bandwidth 1536
ip address 209.165.200.230 255.255.255.224
tunnel source Serial0/0
tunnel mode gre multipoint
B. interface fa0/0
bandwidth 1536
ip address 209.165.200.230 255.255.255.224
tunnel mode gre multipoint
C. interface Tunnel0
bandwidth 1536
ip address 209.165.200.231 255.255.255.224
tunnel source 209.165.201.1
tunnel-mode dynamic
D. interface fa 0/0
bandwidth 1536
ip address 209.165.200.231 255.255.255.224
tunnel source 192.168.161.2
tunnel destination 209.165.201.1
tunnel-mode dynamic
Answer: A
Q93. Which two options are EEM policies? (Choose two.)
A. applets
B. event detectors
C. scripts
D. syslogs
E. actions
Answer: A,C
Q94. Refer to the exhibit.
While configuring AAA with a local database, users can log in via Telnet, but receive the message "error in authentication" when they try to go into enable mode. Which action can solve this problem?
A. Configure authorization to allow the enable command.
B. Use aaa authentication login default enable to allow authentication when using the enable command.
C. Verify whether an enable password has been configured.
D. Use aaa authentication enable default enable to allow authentication when using the enable command.
Answer: C
Explanation:
If a different enable password is configured, it will override the privilege level 15 of that user and force the existing password to be used for enable access.
Q95. Which two BGP attributes are optional, non-transitive attributes? (Choose two.)
A. AS path
B. local preference
C. MED
D. weight
E. cluster list
Answer: C,E
Update latest ccie r&s dumps:
Q96. Which statement is true about MLD?
A. MLD v1 gives hosts the ability to receive multicast packets from specific source addresses.
B. All MLD messages are sent with a link-local IPv6 source address of FF02::D.
C. The multicast address field is cleared to zero when sending an MLD report message.
D. MLD is used by IPv6 routers to discover multicast listeners on a directly attached link.
Answer: D
Explanation:
IPv6 Multicast Listener Discovery (MLD) is used by IPv6 devices to discover multicast listeners (nodes that want to receive multicast packets destined for specific multicast addresses) on directly attached links. There are two versions of MLD. MLD version 1 is based on version 2 of the IGMP for IPv4, and MLD version 2 is based on version 3 of the IGMP for IPv4. IPv6 multicast for Cisco software uses both MLD version 2 and MLD version 1.
Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_lsm/configuration/xe-3s/imc-lsm-xe-3s-book/ipv6-mcast-mld-xe.html
Q97. When EIGRP is used as the IPv4 PE-CE protocol, which two requirements must be configured before the BGP IPv4 address family can be configured? (Choose two.)
A. the route distinguisher
B. the virtual routing and forwarding instance
C. the loopback interface
D. the router ID
Answer: A,B
Explanation:
A VRF must be created, and a route distinguisher and route target must be configured in order for the PE routers in the BGP network to carry EIGRP routes to the EIGRP CE site. The VRF must also be associated with an interface in order for the PE router to send routing updates to the CE router. Prerequisites Before this feature can be configured, MPLS and CEF must be configured in the BGP network, and multiprotocol BGP and EIGRP must be configured on all PE routers that provide VPN services to CE routers.
Reference:
http://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/seipecec.html#wp1083316
Q98. Which three statements are true about PPP CHAP authentication? (Choose three.)
A. PPP encapsulation must be enabled globally.
B. The LCP phase must be complete and in closed state.
C. The hostname used by a router for CHAP authentication cannot be changed.
D. PPP encapsulation must be enabled on the interface.
E. The LCP phase must be complete and in open state.
F. By default, the router uses its hostname to identify itself to the peer.
Answer: D,E,F
Explanation:
Point-to-Point Protocol (PPP) authentication issues are one of the most common causes for dialup link failures. This document provides some troubleshooting procedures for PPP authentication issues.
Prerequisites
. Enable PPP encapsulation
. The PPP authentication phase does not begin until the Link Control Protocol (LCP) phase is complete and is in the open state. If debug ppp negotiation does not indicate that LCP is open, troubleshoot this issue before proceeding.
Note. By default, the router uses its hostname to identify itself to the peer. However, this CHAP username can be changed through the ppp chap hostname command.
Reference: http://www.cisco.com/c/en/us/support/docs/wan/point-to-point-protocol-ppp/25647-understanding-ppp-chap.html
Q99. Refer to the exhibit.
Which two options are effects of the given configuration? (Choose two.)
A. It sets the data export destination to 209.165.200.227 on UDP port 49152.
B. It enables Cisco Express Forwarding on interface FastEthernet0/0.
C. It configures the export process to include the BGP peer AS of the router gathering the data.
D. It enables NetFlow switching on interface FastEthernet0/0.
E. It sets the data export destination to 209.165.200.227 on TCP port 49152.
Answer: A,D
Explanation:
The “ip flow-export destination 209.165.200.227 49152” command specifies that the data export destination server is 209.165.200.227 using UDP port 49152.
The “ip route-cache flow” command under the fastethernet 0/0 interface enable netflow switching on that interface.
Q100. Refer to the exhibit.
Which two statements about the R1 configuration are true? (Choose two.)
A. The IP TTL value is copied to the MPLS field during label imposition.
B. The structure of the MLPS network is hidden in a traceroute.
C. The LDP session interval and hold times are configured for directly connected neighbors.
D. R1 protects the session for 86400 seconds.
E. All locally assigned labels are discarded.
Answer: B,D