♥♥ 2021 NEW RECOMMEND ♥♥
Free VCE & PDF File for Cisco 400-101 Real Exam (Full Version!)
★ Pass on Your First TRY ★ 100% Money Back Guarantee ★ Realistic Practice Exam Questions
Free Instant Download NEW 400-101 Exam Dumps (PDF & VCE):
Available on:
http://www.surepassexam.com/400-101-exam-dumps.html
Q211. DRAG DROP
Drag and drop the LACP elements on the left into the correct priority order in the hot-standby port-selection process on the right.
Answer:
Q212. For which kind of MPLS deployment is the next-hop-self all keyword used on a BGP neighbor command?
A. 6VPE
B. MPLS Carrier's carrier
C. inter-AS MPLS VPN option D
D. inter-AS MPLS VPN option C
E. Unified MPLS
Answer: E
Explanation:
Since the core and aggregation parts of the network are integrated and end-to-end LSPs are provided, the Unified MPLS solution is also referred to as "Seamless MPLS." New technologies or protocols are not used here, only MPLS, Label Distribution Protocol (LDP), IGP, and BGP. Since you do not want to distribute the loopback prefixes of the PE routers from one part of the network into another part, you need to carry the prefixes in BGP. The Internal Border Gateway Protocol (iBGP) is used in one network, so the next hop address of the prefixes is the loopback prefixes of the PE routers, which is not known by the IGP in the other parts of the network. This means that the next hop address cannot be used to recurse to an IGP prefix. The trick is to make the ABR routers Route Reflectors (RR) and set the next hop to self, even for the reflected iBGP prefixes. In order for this to work, a new knob is needed. Only the RRs need newer software to support this architecture. Since the RRs advertise the BGP prefixes with the next hop set to themselves, they assign a local MPLS label to the BGP prefixes. This means that in the data plane, the packets forwarded on these end-to-end LSPs have an extra MPLS label in the label stack. The RRs are in the forwarding path. There are two possible scenarios:
. The ABR does not set the next hop to self for the prefixes advertised (reflected by BGP) by the ABR into the aggregation part of the network. Because of this, the ABR needs to redistribute the loopback prefixes of the ABRs from the core IGP into the aggregation IGP. If this is done, there is still scalability. Only the ABR loopback prefixes (from the core) need to be advertised into the aggregation part, not the loopback prefixes from the PE routers from the remote aggregation parts.
. The ABR sets the next hop to self for the prefixes advertised (reflected by BGP) by the ABR into the aggregation part. Because of this, the ABR does not need to redistribute the loopback prefixes of the ABRs from the core IGP into the aggregation IGP.
In both scenarios, the ABR sets the next hop to self for the prefixes advertised (reflected by BGP) by the ABR from the aggregation part of the network into the core part. If this is not done, the ABR needs to redistribute the loopback prefixes of the PEs from the aggregation IGP into the core IGP. If this is done, there is no scalability. In order to set the next hop to self for reflected iBGP routes, you must configure the neighbor x.x.x.x next-hop-self all command.
Reference: http://www.cisco.com/c/en/us/support/docs/multiprotocol-label-switching-mpls/mpls/116127-configure-technology-00.html
Q213. Refer to the exhibit.
Which three statements about the output are true? (Choose three.)
A. An mrouter port can be learned by receiving a PIM hello packet from a multicast router.
B. This switch is configured as a multicast router.
C. Gi2/0/1 is a trunk link that connects to a multicast router.
D. An mrouter port is learned when a multicast data stream is received on that port from a multicast router.
E. This switch is not configured as a multicast router. It is configured only for IGMP snooping.
F. IGMP reports are received only on Gi2/0/1 and are never transmitted out Gi2/0/1 for VLANs 10 and 20.
Answer: A,B,C
Explanation:
In this example, the switch has been configured as a multicast router since IGMP snooping has been enabled. All mrouters can learn about other mrouters by receiving a PIM hello packet from another multicast router. Also, since two different VLANs are being used by the same port of gi 2/0/1, it must be a trunk link that connects to another multicast router.
Q214. Refer to the exhibit.
Which two statements about this capture are true? (Choose two.)
A. It is set to run for five minutes.
B. It continues to capture data after the buffer is full.
C. It is set to run for a period of 00:03:26.
D. It captures data only until the buffer is full.
E. It is set to use the default buffer type.
Answer: A,B
Q215. Which two parameters does the Tunnel Mode Auto Selection feature select automatically? (Choose two.)
A. the tunneling protocol
B. the transport protocol
C. the ISAKMP profile
D. the transform-set
E. the tunnel peer
Answer: A,B
Explanation:
The Tunnel Mode Auto Selection feature eases the configuration and spares you about knowing the responder’s details. This feature automatically applies the tunneling protocol (GRE or IPsec) and transport protocol (IPv4 or IPv6) on the virtual template as soon as the IKE profile creates the virtual access interface. This feature is useful on dual stack hubs aggregating multivendor remote access, such as Cisco AnyConnect VPN Client, Microsoft Windows7 Client, and so on.
Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_conn_vpnips/configuration/xe-3s/sec-sec-for-vpns-w-ipsec-xe-3s-book/sec-ipsec-virt-tunnl.html
Q216. Which three types of traffic are allowed by IEEE 802.1X access control prior to getting authenticated? (Choose three.)
A. EAPOL
B. VTP
C. STP
D. ARP
E. CDP
F. HTTP
Answer: A,C,E
Explanation:
Until the client is authenticated, IEEE 802.1x access control allows only Extensible Authentication Protocol over LAN (EAPOL), Cisco Discovery Protocol (CDP), and Spanning Tree Protocol (STP) traffic through the port to which the client is connected. After authentication, normal traffic passes through the port.
Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/release/15-0_2_se/configuration/guide/scg3750/sw8021x.pdf
Q217. Which two types of traffic are blocked when the storm control threshold for multicast traffic is reached on a port? (Choose two.)
A. BPDU
B. OSPF
C. CDP
D. IS-IS
E. LLDP
Answer: B,D
Q218. Which option is the result if two adjacent routers are configured for OSPF with different process IDs?
A. The routers are unable to establish an adjacency.
B. The routers establish an adjacency, but route exchange fails.
C. The routers establish an adjacency and exchange routes, but the routes are unreachable.
D. The routers establish an adjacency and exchange routes, and the routes are reachable.
Answer: D
Q219. Which two statements about IPv4 and IPv6 networks are true? (Choose two.)
A. In IPv6, hosts perform fragmentation.
B. IPv6 uses a UDP checksum to verify packet integrity.
C. In IPv6, routers perform fragmentation.
D. In IPv4, fragmentation is performed by the source of the packet.
E. IPv4 uses an optional checksum at the transport layer.
F. IPv6 uses a required checksum at the network layer.
Answer: A,B
Q220. Which attribute is transported over an MPLS VPN as a BGP extended community?
A. route target
B. route distinguisher
C. NLRI
D. origin
E. local preference
Answer: A
