Exam Code: ccna routing and switching icnd2 200 105 official cert guide (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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Q31. - (Topic 3) 

What are three reasons that an organization with multiple branch offices and roaming users might implement a Cisco VPN solution instead of point-to-point WAN links? (Choose three.) 

A. reduced cost 

B. better throughput 

C. broadband incompatibility 

D. increased security 

E. scalability 

F. reduced latency 

Answer: A,D,E 

Explanation: Cisco VPN solutions provide exceptional security through encryption and authentication technologies that protect data in transit from unauthorized access and attacks. A Cisco VPN helps you: Use highly secure communications, with access rights tailored to individual users Quickly add new sites or users, without significantly expanding your existing infrastructure Improve productivity by extending corporate networks, applications, and collaboration tools Reduce communications costs while increasing flexibility 


Q32. - (Topic 3) 

Refer to the exhibit. 

A technician pastes the configurations in the exhibit into the two new routers shown. Otherwise, the routers are configured with their default configurations. A ping from Host1 to Host2 fails, but the technician is able to ping the S0/0 interface of R2 from Host1. The configurations of the hosts have been verified as correct. What is the cause of the problem? 

A. The serial cable on R1 needs to be replaced. 

B. The interfaces on R2 are not configured properly. 

C. R1 has no route to the 192.168.1.128 network. 

D. The IP addressing scheme has overlapping subnetworks. 

E. The ip subnet-zero command must be configured on both routers. 

Answer:

Explanation: 

Whenever a node needs to send data to another node on a network, it must first know where to send it. If the node cannot directly connect to the destination node, it has to send it via other nodes along a proper route to the destination node. A remote network is a network that can only be reached by sending the packet to another router. Remote networks are added to the routing table using either a dynamic routing protocol or by configuring static routes. Static routes are routes to networks that a network administrator manually configured.So R should have static route for the 192.168.1.128. 


Q33. - (Topic 3) 

Users have been complaining that their Frame Relay connection to the corporate site is very slow. The network administrator suspects that the link is overloaded. Based on the partial output of the Router # show frame relay pvc command shown in the graphic, which output value indicates to the local router that traffic sent to the corporate site is experiencing congestion? 

A. DLCI=100 

B. last time PVC status changed 00:25:40 

C. in BECN packets 192 

D. in FECN packets 147 

E. in DF packets 0 

Answer:

Explanation: 

First we should grasp the concept of BECN & FECN through an example: 

Suppose Router A wants to send data to Router B through a Frame Relay network. If the network is congested, Switch 1 (a DCE device) will set the FECN bit value of that frame to 1, indicating that frame experienced congestion in the path from source to destination. This frame is forwarded to Switch 2 and to Router B (with the FECN bit = 1). Switch 1 knows that the network is congesting so it also sends frames back to Router A with BECN bit set to 1 to inform that path through the network is congested. 

In general, BECN is used on frames traveling away from the congested area to warn source devices that congestion has occurred on that path while FECN is used to alert receiving devices if the frame experiences congestion. 

BECN also informs the transmitting devices to slow down the traffic a bit until the network returns to normal state. The question asks “which output value indicates to the local router that traffic sent to the corporate site is experiencing congestion” which means it asks about the returned parameter which indicates congestion ->BECN. 


Q34. - (Topic 1) 

Refer to the exhibit. 

The output that is shown is generated at a switch. Which three statements are true? (Choose three.) 

A. All ports will be in a state of discarding, learning, or forwarding. 

B. Thirty VLANs have been configured on this switch. 

C. The bridge priority is lower than the default value for spanning tree. 

D. All interfaces that are shown are on shared media. 

E. All designated ports are in a forwarding state. 

F. This switch must be the root bridge for all VLANs on this switch. 

Answer: A,C,E 

Explanation: 

From the output, we see that all ports are in Designated role (forwarding state) -> A and E 

are correct. 

The command “show spanning-tree vlan 30 only shows us information about VLAN 30. We 

don’t know how many VLAN exists in this switch -> B is not correct. 

The bridge priority of this switch is 24606 which is lower than the default value bridge 

priority 32768 -> C is correct. 

All three interfaces on this switch have the connection type “p2p”, which means Point-to-point environment – not a shared media -> D is not correct. 

The only thing we can specify is this switch is the root bridge for VLAN 3o but we can not 

guarantee it is also the root bridge for other VLANs -> F is not correct. 


Q35. - (Topic 1) 

Refer to the exhibit. 

A technician has configured the FastEthernet 0/1 interface on Sw11 as an access link in VLAN 1. Based on the output from the show vlan brief command issued on Sw12, what will be the result of making this change on Sw11? 

A. Only the hosts in VLAN 1 on the two switches will be able to communicate with each other. 

B. The hosts in all VLANs on the two switches will be able to communicate with each other. 

C. Only the hosts in VLAN 10 and VLAN 15 on the two switches will be able to communicate with each other. 

D. Hosts will not be able to communicate between the two switches. 

Answer:

Explanation: 

VLANs are local to each switch's database, and VLAN information is not passed between switches without implementing VLAN Trunk Protocol (VTP). Trunks carry traffic from all VLANs to and from the switch by default but, can be configured to carry only specified VLAN traffic. Trunk links are required to pass VLAN information between switches. So Sw11 port should be trunk not access port. Additionally, there are no ports assigned to VLAN 1. 


Q36. - (Topic 3) 

The output of the show frame-relay pvc command shows "PVC STATUS = INACTIVE". What does this mean? 

A. The PVC is configured correctly and is operating normally, but no data packets have been detected for more than five minutes. 

B. The PVC is configured correctly, is operating normally, and is no longer actively seeking the address of the remote router. 

C. The PVC is configured correctly, is operating normally, and is waiting for interesting traffic to trigger a call to the remote router. 

D. The PVC is configured correctly on the local switch, but there is a problem on the remote end of the PVC. 

E. The PVC is not configured on the local switch. 

Answer:

Explanation: The PVC STATUS displays the status of the PVC. The DCE device creates and sends the report to the DTE devices. There are 4 statuses: ACTIVE: the PVC is operational and can transmit dataINACTIVE: the connection from the local router to the switch is working, but the connection to the remote router is not availableDELETED: the PVC is not present and no LMI information is being received from the Frame Relay switch STATIC: the Local Management Interface (LMI) mechanism on the interface is disabled (by using the “no keepalive” command). This status is rarely seen. 


Q37. - (Topic 2) 

Refer to the exhibit. 

Assume that all of the router interfaces are operational and configured correctly. How will router R2 be affected by the configuration of R1 that is shown in the exhibit? 

A. Router R2 will not form a neighbor relationship with R1. 

B. Router R2 will obtain a full routing table, including a default route, from R1. 

C. R2 will obtain OSPF updates from R1, but will not obtain a default route from R1. 

D. R2 will not have a route for the directly connected serial network, but all other directly connected networks will be present, as well as the two Ethernet networks connected to R1. 

Answer:

Explanation: 

Open Shortest Path First http://en.wikipedia.org/wiki/Open_Shortest_Path_First 

The configuration of R1 shows "router ospf 1" however, the diagram also shows that both routers should be in the backbone OSPF Area of "0". When routers are in different OSPF areas they will not form a neighbor relationship. Neighbor relationships As a link state routing protocol, OSPF establishes and maintains neighbor relationships in order to exchange routing updates with other routers. The neighbor relationship table is called an adjacency database in OSPF. Provided that OSPF is configured correctly, OSPF forms neighbor relationships only with the routers directly connected to it. In order to form a neighbor relationship between two routers, the interfaces used to form the relationship must be in the same area. Generally an interface is only configured in a single area, however you can configure an interface to belong to multiple areas. In the second area, such an interface must be configured as a secondary interface. (A neighbor state simulation shows how neighbor state changes from Down to Full Adjacency progressively with exchanging Hello, DD, Request, Update, and Ack packets). 


Q38. - (Topic 3) 

Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers? 

A. IETF 

B. ANSI Annex D 

C. Q9333-A Annex A 

D. HDLC 

Answer:

Explanation: Cisco supports two Frame Relay encapsulation types: the Cisco encapsulation and the IETF Frame Relay encapsulation, which is in conformance with RFC 1490 and RFC 2427. The former is often used to connect two Cisco routers while the latter is used to connect a Cisco router to a non-Cisco router. You can test with your Cisco router when typing the command Router(config-if)#encapsulation frame-relay ? on a WAN link. Note: Three LMI options are supported by Cisco routers are ansi, Cisco, and Q933a. They represent the ANSI Annex D, Cisco, and ITU Q933-A (Annex A) LMI types, respectively. HDLC is a WAN protocol same as Frame-Relay and PPP so it is not a Frame Relay encapsulation type. 


Q39. - (Topic 1) 

Refer to the exhibit. 

At the end of an RSTP election process, which access layer switch port will assume the discarding role? 

A. Switch3, port fa0/1 

B. Switch3, port fa0/12 

C. Switch4, port fa0/11 

D. Switch4, port fa0/2 

E. Switch3, port Gi0/1 

F. Switch3, port Gi0/2 

Answer:

Explanation: 

In this question, we only care about the Access Layer switches (Switch3 & 4). Switch 3 has a lower bridge ID than Switch 4 (because the MAC of Switch3 is smaller than that of Switch4) so both ports of Switch3 will be in forwarding state. The alternative port will surely belong to Switch4. Switch4 will need to block one of its ports to avoid a bridging loop between the two switches. But how does Switch4 select its blocked port? Well, the answer is based on the BPDUs it receives from Switch3. A BPDU is superior than another if it has: 

1. A lower Root Bridge ID2. A lower path cost to the Root3. A lower Sending Bridge ID4. A lower Sending Port ID 

These four parameters are examined in order. In this specific case, all the BPDUs sent by Switch3 have the same Root Bridge ID, the same path cost to the Root and the same Sending Bridge ID. The only parameter left to select the best one is the Sending Port ID (Port ID = port priority + port index). In this case the port priorities are equal because they use the default value, so Switch4 will compare port index values, which are unique to each port on the switch, and because Fa0/12 is inferior to Fa0/1, Switch4 will select the port connected with Fa0/1 (of Switch3) as its root port and block the other port -> Port fa0/11 of Switch4 will be blocked (discarding role) 


Q40. - (Topic 1) 

Which three statements are typical characteristics of VLAN arrangements? (Choose three.) 

A. A new switch has no VLANs configured. 

B. Connectivity between VLANs requires a Layer 3 device. 

C. VLANs typically decrease the number of collision domains. 

D. Each VLAN uses a separate address space. 

E. A switch maintains a separate bridging table for each VLAN. 

F. VLANs cannot span multiple switches. 

Answer: B,D,E 

Explanation: 

By default, all ports on a new switch belong to VLAN 1 (default & native VLAN). There are also some well-known VLANs (for example: VLAN 1002 for fddi-default; VLAN 1003 for token-ring…) configured by default -> A is not correct. To communicate between two different VLANs we need to use a Layer 3 device like router or Layer 3 switch -> B is correct. VLANs don’t affect the number of collision domains, they are the same -> C is not correct. Typically, VLANs increase the number of broadcast domains.We must use a different network (or sub-network) for each VLAN. For example we can use 192.168.1.0/24 for VLAN 1, 192.168.2.0/24 for VLAN 2 -> D is correct. A switch maintains a separate bridging table for each VLAN so that it can send frame to 

ports on the same VLAN only. For example, if a PC in VLAN 2 sends a frame then the 

switch look-ups its bridging table and only sends frame out of its ports which belong to 

VLAN 2 (it also sends this frame on trunk ports) -> E is correct. 

We can use multiple switches to expand VLAN -> F is not correct.