[Free] 2017(July) EnsurePass Examcollection Cisco 200-105 Dumps with VCE and PDF 61-70

2017 July Cisco Official New Released 200-105
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Interconnecting Cisco Networking Devices Part 2 (ICND2 v3.0)

Question No: 61 – (Topic 2)

Refer to the exhibit.


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

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

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

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

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

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

  6. 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

Question No: 62 – (Topic 2)

Which three of these statements regarding 802.1Q trunking are correct? (Choose three.)

  1. 802.1Q native VLAN frames are untagged by default.

  2. 802.1Q trunking ports can also be secure ports.

  3. 802.1Q trunks can use 10 Mb/s Ethernet interfaces.

  4. 802.1Q trunks require full-duplex, point-to-point connectivity.

  5. 802.1Q trunks should have native VLANs that are the same at both ends.

Answer: A,C,E Explanation:

CCNA Self-Study (ICND Exam): Extending Switched Networks with Virtual LANs http://www.ciscopress.com/articles/article.asp?p=102157amp;seqNum=2

Question No: 63 – (Topic 2)

Refer to the exhibit.


Why has this switch not been elected the root bridge for VLAN1?

  1. It has more than one interface that is connected to the root network segment.

  2. It is running RSTP while the elected root bridge is running 802.1d spanning tree.

  3. It has a higher MAC address than the elected root bridge.

  4. It has a higher bridge ID than the elected root bridge.

Answer: D Explanation:

http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a008009482f.s html

When a switch receives a BPDU, it first compares priority, the lower number wins. If a tie, compare MAC, the smaller one wins. Here Switch has 32769 priority which is greater than 20481 so switch will not elect for root bridge. It says the bridge priority for Switch is 32769, and the root priority is 20481. Which means that some other switch has the lower priority and won the election for VLAN 1.

Question No: 64 – (Topic 2)

Refer to the exhibit.


Given the output shown from this Cisco Catalyst 2950, what is the reason that interface FastEthernet 0/10 is not the root port for VLAN 2?

  1. This switch has more than one interface connected to the root network segment in VLAN 2.

  2. This switch is running RSTP while the elected designated switch is running 802.1d Spanning Tree.

  3. This switch interface has a higher path cost to the root bridge than another in the topology.

  4. This switch has a lower bridge ID for VLAN 2 than the elected designated switch.

    Answer: C

    Explanation: These four parameters are examined in order to make root bridge , root port , designated port. Other switch has lowest Sending Bridge ID or Sending Port ID so vlan 2 is not the root port.

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

      Question No: 65 – (Topic 2)

      What are two characteristics of a switch that is configured as a VTP client? (Choose two.)

      1. If a switch that is configured to operate in client mode cannot access a VTP server, then the switch reverts to transparent mode.

      2. On switches that are configured to operate in client mode, VLANs can be created, deleted, or renamed locally.

      3. The local VLAN configuration is updated only when an update that has a higher configuration revision number is received.

      4. VTP advertisements are not forwarded to neighboring switches that are configured in VTP transparent mode.

      5. VTP client is the default VTP mode.

      6. When switches in VTP client mode are rebooted, they send a VTP advertisement request to the VTP servers.

Answer: C,F Explanation:

VLAN Trunking Protocol (VTP) http://archive.networknewz.com/2004/0317.html

VTP Modes

Server Mode Once VTP is configured on a Cisco switch, the default mode used is Server Mode. In any given VTP management domain, at least one switch must be in Server Mode. When in Server Mode, a switch can be used to add, delete, and modify VLANs, and this information will be passed to all other switches in the VTP management domain.

Client Mode When a switch is configured to use VTP Client Mode, it is simply the recipient of any VLANs added, deleted, or modified by a switch in Server Mode within the same management domain. A switch in VTP client mode cannot make any changes to VLAN information.

Transparent Mode A switch in VTP Transparent Mode will pass VTP updates received by switches in Server Mode to other switches in the VTP management domain, but will not actually process the contents of these messages. When individual VLANs are added, deleted, or modified on a switch running in transparent mode, the changes are local to that particular switch only, and are not passed to other switches in the VTP management domain.

Question No: 66 – (Topic 2)

Which term describes a spanning-tree network that has all switch ports in either the blocking or fowarding state?

  1. converged

  2. redundant

  3. provisioned

  4. spanned

Answer: A Explanation:

Spanning Tree Protocol convergence (Layer 2 convergence) happens when bridges and

switches have transitioned to either the forwarding or blocking state. When layer 2 is converged, root bridge is elected and all port roles (Root, Designated and Non-Designated) in all switches are selected.

Question No: 67 – (Topic 2)

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

  1. A new switch has no VLANs configured.

  2. Connectivity between VLANs requires a Layer 3 device.

  3. VLANs typically decrease the number of collision domains.

  4. Each VLAN uses a separate address space.

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

  6. VLANs cannot span multiple switches.

Answer: B,D,E Explanation:

By default, all ports on a new switch belong to VLAN 1 (default amp; native VLAN). There are also some well-known VLANs (for example: VLAN 1002 for fddi-default; VLAN 1003 for token-ring…) configured by default -gt; A is not correct.

To communicate between two different VLANs we need to use a Layer 3 device like router or Layer 3 switch -gt; B is correct.

VLANs don’t affect the number of collision domains, they are the same -gt; 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 for VLAN 1, for VLAN 2 -gt; 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) -gt; E is correct.

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

Question No: 68 – (Topic 2)

Which protocol provides a method of sharing VLAN configuration information between two Cisco switches?

  1. STP

  2. VTP

C. 802.1Q


Answer: B Explanation:

Understanding VLAN Trunk Protocol (VTP) http://www.cisco.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080094c52. shtml


VLAN Trunk Protocol (VTP) reduces administration in a switched network. When you configure a new VLAN on one VTP server, the VLAN is distributed through all switches in the domain. This reduces the need to configure the same VLAN everywhere. VTP is a Cisco-proprietary protocol that is available on most of the Cisco Catalyst series products.

Question No: 69 – (Topic 2)

Refer to the exhibit.


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

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

  2. Thirty VLANs have been configured on this switch.

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

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

  5. All designated ports are in a forwarding state.

  6. 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) -gt; A and E are correct.

The command 鈥渟how spanning-tree vlan 30 only shows us information about VLAN 30. We don’t know how many VLAN exists in this switch -gt; B is not correct.

The bridge priority of this switch is 24606 which is lower than the default value bridge priority 32768 -gt; C is correct.

All three interfaces on this switch have the connection type 鈥減2p鈥? which means Point-to- point environment 鈥?not a shared media -gt; 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 -gt; F is not correct.

Question No: 70 – (Topic 2)

Which three statements about RSTP are true? (Choose three.)

  1. RSTP significantly reduces topology reconverging time after a link failure.

  2. RSTP expands the STP port roles by adding the alternate and backup roles.

  3. RSTP port states are blocking, discarding, learning, or forwarding.

  4. RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.

  5. RSTP also uses the STP proposal-agreement sequence.

  6. RSTP uses the same timer-based process as STP on point-to-point links.

Answer: A,B,D Explanation:

http://www.cisco.com/en/US/tech/tk389/tk621/technologies_white_paper09186a0080094cf a.shtml


Cisco enhanced the original 802.1D specification with features such as Uplink Fast, Backbone Fast, and Port Fast to speed up the convergence time of a bridged network. The drawback is that these mechanisms are proprietary and need additional configuration.

Alternate and Backup Port Roles

These two port roles correspond to the blocking state of 802.1D. A blocked port is defined as not being the designated or root port. A blocked port receives a more useful BPDU than the one it sends out on its segment.

Remember that a port absolutely needs to receive BPDUs in order to stay blocked. RSTP introduces these two roles for this purpose.

Rapid Transition to Forwarding State

Rapid transition is the most important feature introduced by 802.1w. The legacy STA passively waited for the network to converge before it turned a port into the forwarding state. The achievement of faster convergence was a matter of tuning the conservative default parameters (forward delay and max_age timers) and often put the stability of the network at stake. The new rapid STP is able to actively confirm that a port can safely transition to the forwarding state without having to rely on any timer configuration. There is now a real feedback mechanism that takes place between RSTP-compliant bridges. In order to achieve fast convergence on a port, the protocol relies upon two new variables: edge ports and link type.

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