200-105 | The Secret of Cisco 200-105 examcollection

New Questions 16

Which part of the PPPoE server configuration contains the information used to assign an IP address to a PPPoE client?

A. virtual-template interface

B. DHCP

C. dialer interface

D. AAA authentication

Answer: A

New Questions 17

What is the purpose of LCP?

A. to perform authentication

B. to negotiate control options

C. to encapsulate multiple protocols

D. to specify asynchronous versus synchronous

Answer: B

Explanation:

In order to be sufficiently versatile to be portable to a wide variety of environments, PPP provides a Link

Control Protocol (LCP). The LCP is used to automatically agree upon the encapsulation format options, handle varying limits on sizes of packets, detect a looped-back link and other common misconfiguration errors, and terminate the link. Other optional facilities provided are authentication of the identity of its peer on the link, and determination when a link is functioning properly and when it is failing.

Reference: Link Control Protocol

http://www.ietf.org/rfc/rfc1661.txt

New Questions 18

At which layer of the OSI model is RSTP used to prevent loops?

A. physical

B. data link

C. network

D. transport

Answer: B

Explanation: RSTP and STP operate on switches and are based on the exchange of Bridge Protocol Data Units (BPDUs) between switches. One of the most important fields in BPDUs is the Bridge Priority in which the MAC address is used to elect the Root Bridge ,

RSTP operates at Layer 2. http://www.cisco.com/en/US/tech/tk389/tk621/technologies_white_paper09186a0080094cf a.shtml

New Questions 19

What is the first step you perform to configure an SNMPv3 user?

A. Configure server traps.

B. Configure the server group.

C. Configure the server host.

D. Configure the remote engine ID.

Answer: B

Explanation:

The first task in configuring SNMPv3 is to define a view. To simplify things, we'll create a view that allows access to the entire internet subtree:

router(config)#snmp-server view readview internet included

This command creates a view called readview. If you want to limit the view to the system

tree, for example, replace internet with system. The included keyword states that the specified tree should be included in the view; use excluded if you wanted to exclude a certain subtree.

Next, create a group that uses the new view. The following command creates a group called readonly ; v3 means that SNMPv3 should be used. The auth keyword specifies that the entity should authenticate packets without encrypting them; read readview says that the view named readview should be used whenever members of the readonly group access the router.

router(config)#snmp-server group readonly v3 auth read readview

New Questions 20

Refer to the exhibit.

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

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

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

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

D. 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.

New Questions 21

Refer to the exhibit.

Given the output for this command, if the router ID has not been manually set, what router ID will OSPF use for this router?

A. 10.1.1.2

B. 10.154.154.1

C. 172.16.5.1

D. 192.168.5.3

Answer: C

Explanation:

CCNA Tutorial: The OSPF Router ID (RID) http://www.thebryantadvantage.com/CCNACertificationExamTutorialOSPFRouterIDRID.ht m

When determining the Router ID (RID) of an OSPF-enabled router, OSPF will always use the numerically highest IP address on the routeru2021s loopback interfaces, regardless of whether that loopback is OSPF-enabled.

What if there is no loopback? OSPF will then use the numerically highest IP address of the physical interfaces, regardless of whether that interface is OSPF-enabled.

New Questions 22

Which VLAN bridge priority value is assigned by the set span tree root command?

A. 8192

B. 16384

C. 28672

D. 32768

Answer: A

Explanation: 1. Explanations: The set spantree priority command provides a third method to specify the root switch: Source Cisco Website2. Switch-15> (enable)set spantree priority 81923. Spantree 1 bridge priority set to 8192.

New Questions 23

Which process is associated with spanning-tree convergence?

A. determining the path cost

B. electing designated ports

C. learning the sender bridge ID

D. assigning the port ID

Answer: B

Explanation:

Spanning Tree Protocol (STP) convergence (Layer 2 convergence) happens when bridges and switches have transitioned to either the forwarding or blocking state. When layer 2 is converged, Root Switch is elected and Root Ports, Designated Ports and Non-Designated ports in all switches are selected. At Converged condition, the Root Ports and the Designated ports are in forwarding state, and all other ports are in blocking state.

New Questions 24

Refer to the exhibit.

When running EIGRP, what is required for RouterA to exchange routing updates with RouterC?

A. AS numbers must be changed to match on all the routers

B. Loopback interfaces must be configured so a DR is elected

C. The no auto-summary command is needed on Router A and Router C

D. Router B needs to have two network statements, one for each connected network

Answer: A

Explanation:

Here we required same autonomous system between router A,B,C.Routing updated always exchange between in same EIGRP EIGRP autonomous system.you can configure more than one EIGRP autonomous system on the same router. This is typically done at a redistribution point where two EIGRP autonomous systems are interconnected. Individual router interfaces should only be included within a single EIGRP autonomous system. Cisco

does not recommend running multiple EIGRP autonomous systems on the same set of interfaces on the router. If multiple EIGRP autonomous systems are used with multiple points of mutual redistribution, it can cause discrepancies in the EIGRP topology table if correct filtering is not performed at the redistribution points. If possible, Cisco recommends you configure only one EIGRP autonomous system in any single autonomous system. http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080093f07.shtml

New Questions 25

What occurs on a Frame Relay network when the CIR is exceeded?

A. All TCP traffic is marked discard eligible.

B. All UDP traffic is marked discard eligible and a BECN is sent.

C. All TCP traffic is marked discard eligible and a BECN is sent.

D. All traffic exceeding the CIR is marked discard eligible.

Answer: D

Explanation:

Committed information rate (CIR): The minimum guaranteed data transfer rate agreed to by the Frame Relay switch. Frames that are sent in excess of the CIR are marked as discard eligible (DE) which means they can be dropped if the congestion occurs within the Frame Relay network.

Note: In the Frame Relay frame format, there is a bit called Discard eligible (DE) bit that is used to identify frames that are first to be dropped when the CIR is exceeded.