400-101 Guide

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  • Cisco
  • Exam Number/Code 400-101
  • Product Name CCIE Routing and Switching (v5.0)
  • Questions and Answers
  • 911 Q&As
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  • Jun 18,2018
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Ultimate Guide: 400 101 vce

It is more faster and easier to pass the Cisco 400 101 vce exam by using Precise Cisco CCIE Routing and Switching (v5.0) questuins and answers. Immediate access to the Renew exam 400 101 Exam and find the same core area 400 101 dumps questions with professionally verified answers, then PASS your exam with a high score now.

Q291. DRAG DROP 

Drag and drop the DMVPN command on the left to the corresponding function on the right. 

Answer: 


Q292. For which feature is the address family "rtfilter" used? 

A. Enhanced Route Refresh 

B. MPLS VPN filtering 

C. Route Target Constraint 

D. Unified MPLS 

Answer:

Explanation: 

With Multiprotocol Label Switching (MPLS) VPN, the internal Border Gateway Protocol (iBGP) peer or Route Reflector (RR) sends all VPN4 and/or VPN6 prefixes to the PE routers. The PE router drops the VPN4/6 prefixes for which there is no importing VPN routing and forwarding (VRF). This is a behavior where the RR sends VPN4/6 prefixes to the PE router, which it does not need. This is a waste of processing power on the RR and the PE and a waste of bandwidth. With Route Target Constraint (RTC), the RR sends only wanted VPN4/6 prefixes to the PE. 'Wanted' means that the PE has VRF importing the specific prefixes. RFC 4684 specifies Route Target Constraint (RTC). The support is through a new address family rtfilter for both VPNv4 and VPNv6. 

Reference: http://www.cisco.com/c/en/us/support/docs/multiprotocol-label-switching-mpls/mpls/116062-technologies-technote-restraint-00.html 


Q293. What are the three primary components of NetFlow? (Choose three.) 

A. Flow caching 

B. A flow collector 

C. The data analyzer 

D. Flow sequence numbers 

E. Cisco Express Forwarding 

F. Multicast 

Answer: A,B,C 

Explanation: 

NetFlow includes three key components that perform the following capabilities: 

. Flow caching analyzes and collects IP data flows entering router or switch interfaces and prepares data for export. It enables the accumulation of data on flows with unique characteristics, such as IP addresses, application, and CoS. 

. FlowCollector and Data Analysis captures exported data from multiple routers and filters and aggregates the data according to customer policies, and then stores this summarized or aggregated data. Users can leverage Cisco NetFlow collector as a flow collector, or they can opt for a variety of third-party partner products. A Graphical user interface displays and analyzes NetFlow data collected from FlowCollector files. This allows users to complete near-real-time visualization or trending analysis of recorded and aggregated flow data. Users can specify the router and aggregation scheme and desired time interval. 

Reference: http://www.cisco.com/c/en/us/products/collateral/ios-nx-os-software/ios-netflow/product_data_sheet0900aecd80173f71.html 


Q294. Which two options are actions that EEM can perform after detecting an event? (Choose two.) 

A. Place a port in err-disabled. 

B. Generate an SNMP trap. 

C. Reload the Cisco IOS Software. 

D. Send an SMS. 

Answer: B,C 

Explanation: 

action snmp-trap 

To specify the action of generating a Simple Network Management Protocol (SNMP) trap when an Embedded Event Manager (EEM) applet is triggered, use the action snmp-trap command in applet configuration mode. 

ction reload 

To specify the action of reloading the Cisco IOS software when an Embedded Event Manager (EEM) applet is triggered, use the action reload command in applet configuration mode. 

Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_2s/feature/guide/fs_eem2.html 


Q295. You are installing a new device to replace a device that failed. The configuration of the failed device is stored on a networked server, and the new device has an RXBOOT image installed. Under which condition does the streamlined Setup mode fail? 

A. The last four bits of the configuration register are not equal to the decimal value 0 or 1. 

B. The startup configuration file was deleted. 

C. Bit 6 is set in the configuration register. 

D. The startup configuration is corrupt. 

Answer:

Explanation: 

The lowest four bits of the configuration register (bits 3, 2, 1, and 0) form the boot field. The boot field determines if the router boots manually, from ROM, or from Flash or the network. To change the boot field value and leave all other bits set to their default values, follow these guidelines: 

. If you set the configuration register boot field value to 0x0, you must boot the operating system manually with the boot command. 

. If you set the configuration register boot field value to 0x1, the router boots using the default ROM software. 

. If you set the configuration register boot field to any value from 0x2 to 0xF, the router uses the boot field value to form a default boot filename for booting from a network server. For more information about the configuration register bit settings and default filenames, refer to the appropriate router hardware installation guide. 

Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_2/configfun/command/reference/ffun_r/frf010. html 


Q296. Refer to the exhibit. 

You are bringing a new MPLS router online and have configured only what is shown to bring LDP up. Assume that the peer has been configured in a similar manner. You verify the LDP peer state and see that there are no neighbors. What will the output of show mpls ldp discovery show? 

A. Interfaces: 

Ethernet0/0 (ldp): xmit 

B. Interfaces: 

Ethernet0/0 (ldp): xmit/recv 

LDP Id: 25.25.25.2:0; IP addr: 192.168.12.2 

C. Interfaces: 

Ethernet0/0 (ldp): xmit/recv 

LDP Id: 192.168.12.2:0; no route 

D. Interfaces: 

Ethernet0/0 (ldp): xmit/recv 

LDP Id: 25.25.25.2:0; no route 

Answer:


Q297. DRAG DROP 

Drag each routing protocol on the left to the matching statement on the right. 

Answer: 


Q298. Which address is a MAC address that is mapped from an IPv6 address (RFC 2464)? 

A. 3333.FF17.FC0F 

B. FFFE. FF17.FC0F 

C. FF34.3333.FF17 

D. FF7E.FF17.FC0F 

Answer:

Explanation: 

An IPv6 packet with a multicast destination address DST, consisting of the sixteen octets DST through DST, is transmitted to the Ethernet multicast address whose first two octets are the value 3333 hexadecimal and whose last four octets are the last four octets of DST. 

Reference: https://tools.ietf.org/html/rfc2464 


Q299. Refer to the exhibit. 

What is wrong with the configuration of the tunnel interface of this DMVPN Phase II spoke router? 

A. The interface MTU is too high. 

B. The tunnel destination is missing. 

C. The NHRP NHS IP address is wrong. 

D. The tunnel mode is wrong. 

Answer:

Explanation: 

By default, tunnel interfaces use GRE as the tunnel mode, but a DMVPN router needs to be configured for GRE multipoint by using the “tunnel mode gre multipoint” interface command. 


Q300. Which two statements about the BGP community attribute are true? (Choose two.) 

A. Routers send the community attribute to all BGP neighbors automatically. 

B. A router can change a received community attribute before advertising it to peers. 

C. It is a well-known, discretionary BGP attribute. 

D. It is an optional transitive BGP attribute. 

E. A prefix can support only one community attribute. 

Answer: B,D 

Explanation: 

A community is a group of prefixes that share some common property and can be configured with the BGP community attribute. The BGP Community attribute is an optional transitive attribute of variable length. The attribute consists of a set of four octet values that specify a community. The community attribute values are encoded with an Autonomous System (AS) number in the first two octets, with the remaining two octets defined by the AS. A prefix can have more than one community attribute. A BGP speaker that sees multiple community attributes in a prefix can act based on one, some or all the attributes. A router has the option to add or modify a community attribute before the router passes the attribute on to other peers. 

Reference: 

http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/28784-bgp-community.html 


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