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Q191. 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 


Q192. DRAG DROP 

Drag and drop the NHRP flag on the left to the corresponding meaning on the right. 

Answer: 


Q193. Which two statements are characteristics of Ethernet private LAN circuits? (Choose two.) 

A. They support communication between two or more customer endpoints. 

B. They utilize more than one bridge domain. 

C. They support point-to-multipoint EVC. 

D. They support multipoint-to-multipoint EVC. 

Answer: A,D 

Explanation: 

An Ethernet Private LAN (EPLAN) is a multipoint–to–multipoint EVC. EPLAN is an EVC that supports communication between two or more UNIs. In EPLAN, only one EVC can exist on a port and the port can have only one EFP. 

Reference: https://www.cisco.com/c/en/us/td/docs/optical/cpt/r9_3/configuration/guide/cpt93_configurat ion/cpt93_configuration_chapter_0100.pdf 


Q194. DRAG DROP 

Drag and drop the EIGRP term on the left to the corresponding definition on the right. 

Answer: 


Q195. You are implementing new addressing with EIGRP routing and must use secondary addresses, which are missing from the routing table. Which action is the most efficient solution to the problem? 

A. Disable split-horizon on the interfaces with secondary addresses. 

B. Disable split-horizon inside the EIGRP process on the router with the secondary interface addresses. 

C. Add additional router interfaces and move the secondary addresses to the new interfaces. 

D. Use a different routing protocol and redistribute the routes between EIGRP and the new protocol. 

Answer:

Explanation: 

Normally, routers that are connected to broadcast-type IP networks and that use distance-vector routing protocols employ the split horizon mechanism to reduce the possibility of routing loops. Split horizon blocks information about routes from being advertised by a router out of any interface from which that information originated. This behavior usually optimizes communications among multiple routers, particularly when links are broken. However, with nonbroadcast networks, situations can arise for which this behavior is less than ideal. For these situations, you might want to disable split horizon with EIGRP and RIP. If an interface is configured with secondary IP addresses and split horizon is enabled, updates might not be sourced by every secondary address. One routing update is sourced per network number unless split horizon is disabled. 

Reference: 

http://www.cisco.com/c/en/us/td/docs/ios/12_2/ip/configuration/guide/fipr_c/1cfrip.html 


Up to date 400-101 free question:

Q196. You are configuring a DMVPN hub to perform CBWFQ on a per-spoke basis. Which information is used to identify the spoke? 

A. the NHRP network ID 

B. the spoke tunnel source IP 

C. the spoke tunnel interface IP address 

D. the NHRP group 

Answer:


Q197. DRAG DROP 

Drag and drop the Metro Ethernet circuit on the left to the corresponding Service Type category on the right. 

Answer: 


Q198. Which two statements about BGP loop prevention are true? (Choose two.) 

A. Advertisements from PE routers with per-neighbor SOO configured include a Site of Origin value that is equal to the configured value of the BGP peering. 

B. If the configured Site of Origin value of a BGP peering is equal to the Site of Origin value on a route it receives, route advertisement is blocked to prevent a route loop. 

C. AS-override aids BGP loop prevention, but alternate loop prevention mechanisms are also necessary. 

D. Advertisements from the neighbors a BGP peering include a Site of Origin value that is separate from the configured value of the BGP peering. 

E. If the configured Site of Origin value of a BGP peering is greater than the Site of Origin value on a route it receives, route advertisement is blocked to prevent a route loop. 

F. If the configured Site of Origin value of a BGP peering is equal to the Site of Origin value on a route it receives, route advertisement is permitted. 

Answer: A,B 


Q199. Which option describes how a VTPv3 device responds when it detects a VTPv2 device on a trunk port? 

A. It sends VTPv3 packets only. 

B. It sends VTPv2 packets only. 

C. It sends VTPv3 and VTPv2 packets. 

D. It sends a special packet that contains VTPv3 and VTPv2 packet information. 

Answer:

Explanation: 

When a VTP version 3 device on a trunk port receives messages from a VTP version 2 device, the VTP version 3 device sends a scaled-down version of the VLAN database on that particular trunk in a VTP version 2 format. A VTP version 3 device does not send out VTP version 2-formatted packets on a trunk port unless it first receives VTP version 2 packets on that trunk. If the VTP version 3 device does not receive VTP version 2 packets for an interval of time on the trunk port, the VTP version 3 device stops transmitting VTP version 2 packets on that trunk port. Even when a VTP version 3 device detects a VTP version 2 device on a trunk port, the VTP version 3 device continues to send VTP version 3 packets in addition to VTP version 3 device 2 packets, to allow two kinds of neighbors to coexist on the trunk. VTP version 3 sends VTP version 3 and VTP version 2 updates on VTP version 2-detected trunks. 

Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SX/configuration/guide/book/vtp.html 


Q200. DRAG DROP 

Drag and drop each MLPPP command on the left to the function it performs on the right. 

Answer: