Cisco CCNA 200-301 Questions & Answers

• Question 1251:

  An engineer configured an OSPF neighbor as a designated router. Which state verifies the designated router is in the proper mode?

  A. Init

  B. 2-way

  C. Exchange

  D. Full

  Correct Answer: D

  A DR or a BDR router will always need to reach a full state relationship with all neighbours (DROther included!) for correct operation. A 2-way state will only be considered correct and stable between two DROther routers.

• Question 1252:

  Refer to the exhibit.

  

  Which route does R1 select for traffic that is destined to 192 168.16.2?

  A. 192.168.16.0/21

  B. 192.168.16.0/24

  C. 192.168.26.0/26

  D. 192.168.16.0/27

  Correct Answer: D

  Because each entry in a forwarding table may specify a sub-network, one destination address may match more than one forwarding table entry. The most specific of the matching table entries — the one with the longest subnet mask - is

  called the longest prefix match. It is called this because it is also the entry where the largest number of leading address bits of the destination address match those in the table entry.

  The destination IP addresses match all four entries in the routing table but the 192.168.16.0/27 has the longest prefix so it will be chosen. This is called the “longest prefix match” rule.

• Question 1253:

  A router running EIGRP has learned the same route from two different paths. Which parameter does the router use to select the best path?

  A. as-path

  B. administrative distance

  C. metric

  D. cost

  Correct Answer: C

  Metric EIGRP Cost OSPF Hop count RIP

• Question 1254:

  Which MAC address is recognized as a VRRP virtual address?

  A. 0000.5E00.010a

  B. 0005.3709.8968

  C. 0000.0C07.AC99

  D. 0007.C070.AB01

  Correct Answer: A

  0000.5E00.01xx is VRRP virtual MAC (Ans. A with xx=0A group)

  0000.0c07.acxx is HSRP virtual MAC address (Ans. C with xx=99)

  0007.b400.xxyy is GLBP virtual MAC (Not in the answers), xx is group and yy is AVF

• Question 1255:

  Refer to the exhibit.

  

  The New York router is configured with static routes pointing to the Atlanta and Washington sites.

  Which two tasks must be performed so that the Serial0/0/0 interfaces on the Atlanta and Washington routers can reach one another? (Choose two.)

  A. Configure the ipv6 route 2023::/126 2012::1 command on the Atlanta router.

  B. Configure the ipv6 route 2012::/126 2023::2 command on the Washington router.

  C. Configure the ipv6 route 2012::/126 2023::1 command on the Washington router.

  D. Configure the ipv6 route 2023::/126 2012::2 command on the Atlanta router.

  E. Configure the ipv6 route 2012::/126 s0/0/0 command on the Atlanta router.

  Correct Answer: BD

  The short syntax of static IPv6 route is:

  ipv6 route {next-hop-IPv6-address | exit-interface}

• Question 1256:

  Refer to the exhibit.

  

  The default-information originate command is configured under the R1 OSPF configuration. After testing, workstations on VLAN 20 at Site B cannot reach a DNS server on the Internet. Which action corrects the configuration issue?

  A. Add the default-information originate command on R2.

  B. Add the always keyword to the default-information originate command on R1.

  C. Configure the ip route 0.0.0.0 0.0.0.0 10.10.10.18 command on R1.

  D. Configure the ip route 0.0.0.0 0.0.0.0 10.10.10.2 command on R2.

  Correct Answer: C

  The default-information originate command advertises a default route into a normal area, provided the advertising router already has a default route. But in the routing table of R1 we don't see such a default route. Therefore we have to configure one.

• Question 1257:

  R1 has learned route 192.168.12.0/24 via IS-IS, OSPF, RIP, and Internal EIGRP. Under normal operating conditions, which routing protocol is installed in the routing table?

  A. IS-IS

  B. Internal EIGRP

  C. RIP

  D. OSPF

  Correct Answer: B

  With the same route (prefix), the router will choose the routing protocol with lowest Administrative Distance (AD) to install into the routing table. The AD of Internal EIGRP (90) is lowest so it would be chosen. The table below lists the ADs of popular routing protocols.

  

  Note: The AD of IS-IS is 115. The “EIGRP” in the table above is “Internal EIGRP”. The AD of “External EIGRP” is 170. An EIGRP external route is a route that was redistributed into EIGRP.

• Question 1258:

  How does HSRP provide first hop redundancy?

  A. It load-balances Layer 2 traffic along the path by flooding traffic out all interfaces configured with the same VLAN.

  B. It uses a shared virtual MAC and a virtual IP address to a group of routers that serve as the default gateway for hosts on a LAN.

  C. It forwards multiple packets to the same destination over different routed links in the data path.

  D. It load-balances traffic by assigning the same metric value to more than one route to the same destination in the IP routing table.

  Correct Answer: B

  Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/xe-16/fhp-xe-16-book/fhp-hsrp-mgo.html

• Question 1259:

  Refer to the exhibit.

  

  An engineer is configuring the New Your router to reach the Lo1 interface of the Atlanta router using interface Se0/0/0 as the primary path. Which two commands must be configured on the New York router so that it can reach the Lo1 interface of the Atlanta router via Washington when the link between New York and Atlanta goes down? (Choose two.)

  A. Ipv6 route 2000::1/128 2012::1

  B. Ipv6 route 2000::1/128 2012::1 5

  C. Ipv6 route 2000::1/128 2012::2

  D. Ipv6 route 2000::1/128 2023::2 5

  E. Ipv6 route 2000::1/128 2023::3 5

  Correct Answer: AE

  Floating static routes are static routes that have an administrative distance greater than the administrative distance (AD) of another static route or dynamic routes. By default a static route has an AD of 1 then floating static route must have the AD greater than 1. Floating static route has a manually configured administrative distance greater than that of the primary route and therefore would not be in the routing table until the primary route fails.

• Question 1260:

  Which two outcomes are predictable behaviors for HSRP? (Choose two.)

  A. The two routers negotiate one router as the active router and the other as the standby router.

  B. The two routers share the same interface IP address, and default gateway traffic is load-balanced between them.

  C. The two routers synchronize configurations to provide consistent packet forwarding.

  D. Each router has a different IP address, both routers act as the default gateway on the LAN, and traffic is load-balanced between them.

  E. The two routers share a virtual IP address that is used as the default gateway for devices on the LAN.

  Correct Answer: AE

  There's one active router and one standby router and the two routers share a virtual IP address that is used as the default gateway for devices on the LAN.