Cisco 400-101 ExamCCIE Routing and Switching (v5.0)

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Examcollection ccie 400 101 dumps Questions are updated and all 400 101 pdf answers are verified by experts. Once you have completely prepared with our 400 101 dumps exam prep kits you will be ready for the real ccie 400 101 exam without a problem. We have Avant-garde Cisco exam 400 101 dumps study guide. PASSED 400 101 ccie First attempt! Here What I Did.

Q361. Refer to the exhibit. 

How many LSDBs will router A have? 

A. 0 

B. 1 

C. 2 

D. 3 

Answer:


Q362. Now that we’ve generated the key, our next step would be to configure our vty lines for SSH access and specify which database we are going to use to provide authentication to the device. The local database on the router will do just fine for this example. 

LabRouter(config)#line vty 0 4 

LabRouter(config-line)#login local 

LabRouter(config-line)#transport input ssh 

5. You will need to create an account on the local router’s database to be used for authenticating to the device. This can be accomplished with these commands. LabRouter(config)#username XXXX privilege 15 secret XXXX 

Reference: http://blog.pluralsight.com/configure-secure-shell-ssh-on-cisco-router 


Q363. Which two issues is TCP Sequence Number Randomization designed to prevent? (Choose two.) 

A. DDOS attacks 

B. OS fingerprinting 

C. man-in-the-middle attacks 

D. ARP poisoning 

E. Smurf attack 

Answer: B,C 


Q364. DRAG DROP 

Drag and drop the BGP attribute on the left to the correct category on the right. 

Answer: 


Q365. Refer to the exhibit. 

R3 prefers the path through R1 to reach host 10.1.1.1. 

Which option describes the reason for this behavior? 

A. The OSPF reference bandwidth is too small to account for the higher speed links through R2. 

B. The default OSPF cost through R1 is less than the cost through R2. 

C. The default OSPF cost through R1 is more than the cost through R2. 

D. The link between R2 and R1 is congested. 

Answer:

Explanation: 

The default formula to calculate OSPF bandwidth is BW = Bandwidth Reference / interface 

bandwidth [bps] = 10^8 / / interface bandwidth [bps] 

BW of the R1-R3 link = 10^8 / 100Mbps = 10^8 / 10^8 = 1 

BW of the R2-R3 link = 10^8 / 1Gbps = 10^8 / 10^9 = 1 (round up) 

Therefore OSPF considers the two above links have the same Bandwidth -> R3 will go to 10.1.1.1 via the R1-R3 link. The solution here is to increase the Bandwidth Reference to a higher value using the “auto-cost reference-bandwidth” command under OSPF router mode. For example: Router(config)#router ospf 1 Router(config-router)#auto-cost reference-bandwidth 10000 This will increase the reference bandwidth to 10000 Mbps which increases the BW of the R2-R3 link to 10^10 / 10^8 = 100. 


Q366. Which two options are mandatory components of a multiprotocol BGP VPN-IPv4 address? (Choose two.) 

A. a route distinguisher 

B. an IPv4 address 

C. a route target 

D. an MPLS label 

E. a system ID 

F. an area ID 

Answer: A,B 

Explanation: 

The IP prefix is a member of the IPv4 address family. After the PE device learns the IP prefix, the PE converts it into a VPN-IPv4 prefix by combining it with an 8-byte route distinguisher (RD). The generated prefix is a member of the VPN-IPv4 address family. It uniquely identifies the customer address, even if the customer site is using globally nonunique (unregistered private) IP addresses. The route distinguisher used to generate the VPN-IPv4 prefix is specified by a configuration command associated with the virtual routing and forwarding (VRF) instance on the PE device. 

Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_l3_vpns/configuration/15-mt/mp-l3-vpns-15-mt-book/mp-bgp-mpls-vpn.html 


Q367. Refer to the exhibit. 

Which action must you take to enable full reachability from router C to router D? 

A. Build an OSPF virtual link. 

B. Build an OSPF sham link. 

C. Configure mutual redistribution between OSPF and EIGRP on routers A and B. 

D. Add a static route on router D. 

Answer:

Explanation: 

For full connectivity, we need to configure mutual redistribution to advertise the EIGRP routes into OSPF and to advertise the OSPF routes into the EIGRP network. This needs to be done at the two border routers that connect to both the EIGRP and OSPF domains. 


Q368. Refer to the exhibit. 

Video Source S is sending interactive video traffic to Video Receiver R. Router R1 has multiple routing table entries for destination R. Which load-balancing mechanism on R1 can cause out-of-order video traffic to be received by destination R? 

A. per-flow load balancing on R1 for destination R 

B. per-source-destination pair load balancing on R1 for destination R 

C. CEF load balancing on R1 for destination R 

D. per-packet load balancing on R1 for destination R 

Answer:

Explanation: 

Per-packet load balancing guarantees equal load across all links, however potentially the packets may arrive out-of-order at the destination as differential delay may exist within the network. 

Reference: http://www.cisco.com/en/US/products/hw/modules/ps2033/prod_technical_reference09186 a00800afeb7.html 


Q369. Which two services are used to transport Layer 2 frames across a packet-switched network? (Choose two.) 

A. Frame Relay 

B. ATM 

C. AToM 

D. L2TPv3 

Answer: C,D 

Explanation: 

Both AToM and L2TPv3 have the common objective of transmitting packet switched traffic of L2 frames (Frame Relay, ATM, and Ethernet) across a packet-switched network. 

Reference: Layer 2 VPN Architectures - Google Books Result Wei Luo, Carlos Pignataro, Anthony Chan 

https://books.google.com/books?isbn=0132796864 


Q370. Refer to the exhibit. 

Which configuration reduces CPU utilization on R2 while still advertising the connected routes of R2 to R1? 

A. Configure eigrp stub connected on R2. 

B. Configure eigrp stub receive-only on R1. 

C. Configure eigrp stub static on R2. 

D. Configure eigrp stub summary on R1. 

Answer:


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