Exam Code: ccna 200 105 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: Interconnecting Cisco Networking Devices Part 2 (ICND2 v3.0)
Certification Provider: Cisco
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Q1. - (Topic 2) 

Refer to the exhibit. 

RTA is configured with a basic configuration. The link between the two routers is operational and no routing protocols are configured on either router. The line shown in the exhibit is then added to router RTA. Should interface Fa0/0 on router RTB shut down, what effect will the shutdown have on router RTA? 

A. A route to 172.16.14.0/24 will remain in the RTA routing table. 

B. A packet to host 172.16.14.225 will be dropped by router RTA. 

C. Router RTA will send an ICMP packet to attempt to verify the route. 

D. Because router RTB will send a poison reverse packet to router RTA, RTA will remove the route. 

Answer:

Explanation: 

Static routes remain in the routing table even if the specified gateway becomes unavailable. If the specified gateway becomes unavailable, you need to remove the static route from the routing table manually. However, static routes are removed from the routing table if the specified interface goes down, and are reinstated when the interface comes back up. Therefore the static route will only be removed from the routing table if the S0/0 interface on RTA is shutdown. 

Reference: http://www.cisco.com/en/US/docs/security/asa/asa84/configuration/guide/route_static.html) 


Q2. - (Topic 3) 

Which feature does PPP use to encapsulate multiple protocols? 

A. NCP 

B. LCP 

C. IPCP 

D. IPXP 

Answer:

Explanation: 

PPP permits multiple network layer protocols to operate on the same communication link. For every network layer protocol used, a separate Network Control Protocol (NCP) is provided in order to encapsulate and negotiate options for the multiple network layer protocols. It negotiates network-layer information, e.g. network address or compression options, after the connection has been established 


Q3. - (Topic 3) 

Which Layer 2 protocol encapsulation type supports synchronous and asynchronous circuits and has built-in security mechanisms? 

A. HDLC 

B. PPP 

C. X.25 

D. Frame Relay 

Answer:

Explanation: 

High-Level Data Link Control (HDLC) - HDLC is the default encapsulation type on point-to-point, dedicated links, and circuit-switched connections. It is used typically when communicating between two Cisco devices. It is a bit-oriented synchronous data link layer protocol. Point-to-Point Protocol (PPP) - Provides router-to-router and host-to network connections over synchronous and asynchronous circuits. PPP was designed to work with several network layer protocols, such as IP, and IPX. PPP also has built in security mechanisms such as PAP and CHAP X.25/Link Access Procedure, Balanced (LAPB) - ITU-T standard that defines how connections between DTE and DCE are maintained for remote terminal access and computer communications in public data networks. X.25 specifies LAPB, a data line layer protocol. X.25 is a predecessor to Frame Relay. Frame Relay - Industry standard, switched data link layer protocol that handles multiple virtual circuits. It is a next-generation to X.25 that is streamlined to eliminate some of the time-consuming processes (such as error correction and flow control) that were employed in X.25. 


Q4. - (Topic 2) 

A router receives information about network 192.168.10.0/24 from multiple sources. What will the router consider the most reliable information about the path to that network? 

A. an OSPF update for network 192.168.0.0/16 

B. a static route to network 192.168.10.0/24 

C. a static route to network 192.168.10.0/24 with a local serial interface configured as the next hop 

D. a RIP update for network 192.168.10.0/24 

E. a directly connected interface with an address of 192.168.10.254/24 

F. a default route with a next hop address of 192.168.10.1 

Answer:

Explanation: 

What Is Administrative Distance? http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094195.shtml 

Select the Best Path Administrative distance is the first criterion that a router uses to determine which routing protocol to use if two protocols provide route information for the same destination. Administrative distance is a measure of the trustworthiness of the source of the routing information. Administrative distance has only local significance, and is not advertised in routing updates. Note: The smaller the administrative distance value, the more reliable the protocol. For example, if a router receives a route to a certain network from both Open Shortest Path First (OSPF) (default administrative distance - 110) and Interior Gateway Routing Protocol (IGRP) (default administrative distance - 100), the router chooses IGRP because IGRP is more reliable. This means the router adds the IGRP version of the route to the routing table. 


Q5. - (Topic 2) 

Refer to the exhibit. 

Which three EIGRP routes will be present in the router R4's routing table? (Choose three.) 

A. 172.16.1.0/24 

B. 10.1.10.0/30 

C. 10.0.0.0/8 

D. 10.1.11.0/30 

E. 172.16.0.0/16 

F. 192.168.1.0/24 

Answer: C,E,F 

Explanation: 

EIGRP performs an auto-summarization each time it crosses a border between two different major networks, so when R2 advertises the routes to R4 it will advertise only the summarized routes of 10.0.0.0/8 and 172.16.0.0/16, along with the 192.168.1.0/24 route coming from R3. 


Q6. - (Topic 3) 

Refer to the exhibit. 

A network associate has configured OSPF with the command: City(config-router)# network 192.168.12.64 0.0.0.63 area 0 After completing the configuration, the associate discovers that not all the interfaces are participating in OSPF. Which three of the interfaces shown in the exhibit will participate in OSPF according to this configuration statement? (Choose three.) 

A. FastEthernet0 /0 

B. FastEthernet0 /1 

C. Serial0/0 

D. Serial0/1.102 

E. Serial0/1.103 

F. Serial0/1.104 

Answer: B,C,D 

Explanation: 

The “network 192.168.12.64 0.0.0.63 equals to network 192.168.12.64/26. This network has:Increment: 64 (/26= 1111 1111.1111 1111.1111 1111.1100 0000)Network address: 

192.168.12.64 Broadcast address: 192.168.12.127Therefore all interface in the range of this network will join OSPF - B C D are correct. 


Q7. - (Topic 2) 

Refer to the exhibit. 

Which two statements are true about the loopback address that is configured on RouterB? (Choose two.) 

A. It ensures that data will be forwarded by RouterB. 

B. It provides stability for the OSPF process on RouterB. 

C. It specifies that the router ID for RouterB should be 10.0.0.1. 

D. It decreases the metric for routes that are advertised from RouterB. 

E. It indicates that RouterB should be elected the DR for the LAN. 

Answer: B,C 

Explanation: A loopback interface never comes down even if the link is broken so it provides stability for the OSPF process (for example we use that loopback interface as the router-id) - B is correct. 

The router-ID is chosen in the order below: 

The highest IP address assigned to a loopback (logical) interface. If a loopback interface is not defined, the highest IP address of all active router’s physical interfaces will be chosen. 

-The loopback interface will be chosen as the router ID of RouterB - C is correct. 


Q8. - (Topic 2) 

Which two statements about the OSPF Router ID are true? (Choose two.) 

A. It identifies the source of a Type 1 LSA. 

B. It should be the same on all routers in an OSPF routing instance. 

C. By default, the lowest IP address on the router becomes the OSPF Router ID. 

D. The router automatically chooses the IP address of a loopback as the OSPF Router ID. 

E. It is created using the MAC Address of the loopback interface. 

Answer: A,D 

Explanation: 

From the output of the “show ip ospf database”: r120#show ip ospf data 

OSPF Router with ID (10.0.0.120) (Process ID 1) 

Next, who are the other routers in our area? Router Link States (Area 1) Link ID.ADV Router.Age.Seq#.Checksum Link count 

10.0.0.111.10.0.0.111.600.0x8000023A 0x0092B3 1 

10.0.0.112.10.0.0.112.1246.0x80000234 0x009CAC 1 

10.0.0.113.10.0.0.113.148.0x8000022C 0x004399 3 

10.0.0.120.10.0.0.120.152.0x80000240 0x0046CB 1 This tells us there are four routers in Area 1. The router with RID 10.0.0.113 has 3 links in Area 1, every one else has only 1 link. Also the router will chose the highest loopback interface as its OSPF router ID (if available). 


Q9. - (Topic 2) 

Which two are advantages of static routing when compared to dynamic routing? (Choose two.) 

A. Configuration complexity decreases as network size increases. 

B. Security increases because only the network administrator may change the routing table. 

C. Route summarization is computed automatically by the router. 

D. Routing tables adapt automatically to topology changes. 

E. An efficient algorithm is used to build routing tables, using automatic updates. 

F. Routing updates are automatically sent to neighbors. 

G. Routing traffic load is reduced when used in stub network links. 

Answer: B,G 

Explanation: 

When reading (or being lectured about) all the glorious details of dynamic routing protocols, it's hard not to come away with the impression that dynamic routing is always better than static routing. It's important to keep in mind that the primary duty of a dynamic routing protocol is to automatically detect and adapt to topological changes in the internetwork. The price of this "automation" is paid in bandwidth, security, and maybe queue space, in memory, and in processing time. A frequent objection to static routing is that it is hard to administer. This criticism may be true of medium to large topologies with many alternative routes, but it is certainly not true of small internetworks with few or no alternative routes. References: http://www.ciscopress.com/articles/article.asp?p=24090&seqNum=6 http://www.ciscopress.com/articles/article.asp?p=24090 


Q10. - (Topic 1) 

Refer to the exhibit. 

Which two statements are true about interVLAN routing in the topology that is shown in the exhibit? (Choose two.) 

A. Host E and host F use the same IP gateway address. 

B. Router1 and Switch2 should be connected via a crossover cable. 

C. Router1 will not play a role in communications between host A and host D. 

D. The FastEthernet 0/0 interface on Router1 must be configured with subinterfaces. 

E. Router1 needs more LAN interfaces to accommodate the VLANs that are shown in the exhibit. 

F. The FastEthernet 0/0 interface on Router1 and the FastEthernet 0/1 interface on Switch2 trunk ports must be configured using the same encapsulation type. 

Answer: D,F 

Explanation: 

http://www.cisco.com/en/US/tech/tk389/tk815/technologies_configuration_example09186a 00800949fd.shtml