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New Cisco 200-105 Exam Dumps Collection (Question 2 - Question 11)

Question No: 2

Which command is used to display the collection of OSPF link states?

A. show ip ospf link-state

B. show ip ospf lsa database

C. show ip ospf neighbors

D. show ip ospf database

Answer: D

Explanation: http://www.cisco.com/en/US/docs/ios/iproute_ospf/command/reference/iro_osp3.html#wp1 01217

Examples

The following is sample output from the show ip ospf database command when no arguments or keywords are used:

Router# show ip ospf database

OSPF Router with id(192.168.239.66) (Process ID 300)

Question No: 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: B

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.

Question No: 4

Which statement about switch access ports is true?

A. They drop packets with 802.1Q tags.

B. A VLAN must be assigned to an access port before it is created.

C. They can receive traffic from more than one VLAN with no voice support

D. By default, they carry traffic for VLAN 10.

Answer: A

Explanation:

"If an access port receives a packet with an 802.1Q tag in the header other than the access VLAN value, that port drops the packet without learning its MAC source address."

Question No: 5

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

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

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

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

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

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

F. 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

Convergence

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.

Question No: 6

Which statement is true, as relates to classful or classless routing?

A. Classful routing protocols send the subnet mask in routing updates.

B. RIPv1 and OSPF are classless routing protocols.

C. Automatic summarization at classful boundaries can cause problems on discontiguous subnets.

D. EIGRP and OSPF are classful routing protocols and summarize routes by default.

Answer: C

Explanation: http://www.ciscopress.com/articles/article.asp?p=174107&seqNum=3

RIPv1, RIPv2, IGRP, and EIGRP all auto-summarize classful boundaries by default (OSPF does not).To make discontiguous networks work, meaning you don't want classful boundries to summarize, you need to turn off auto-summary.

Question No: 7

Which form of NAT maps multiple private IP addresses to a single registered IP address by using different

ports?

A. static NAT

B. dynamic NAT

C. overloading

D. overlapping

E. port loading

Answer: C

Question No: 8

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

Question No: 9

If host Z needs to send data through router R1 to a storage server, which destination MAC address does host Z use to transmit packets?

A. the host Z MAC address

B. the MAC address of the interface on R1 that connects to the storage server

C. the MAC address of the interface on R1 that connects to host Z

D. the MAC address of the storage server interface

Answer: C

Question No: 10

A network administrator needs to configure a serial link between the main office and a remote location. The router at the remote office is a non-Cisco router. How should the network administrator configure the serial interface of the main office router to make the connection?

A. Main(config)# interface serial 0/0

Main(config-if)# ip address 172.16.1.1 255.255.255.252 Main(config-if)# no shut

B. Main(config)# interface serial 0/0

Main(config-if)# ip address 172.16.1.1 255.255.255.252 Main(config-if)# encapsulation ppp

Main(config-if)# no shut

C. Main(config)# interface serial 0/0

Main(config-if)# ip address 172.16.1.1 255.255.255.252 Main(config-if)# encapsulation frame-relay

Main(config-if)# authentication chap Main(config-if)# no shut

D. Main(config)# interface serial 0/0

Main(config-if)#ip address 172.16.1.1 255.255.255.252 Main(config-if)#encapsulation ietf

Main(config-if)# no shut

Answer: B

Explanation:

Cisco High-Level Data Link Controller (HDLC) is the Cisco proprietary protocol for sending data over synchronous serial links using HDLC. So HDLC runs only in Cisco router. PPP is not proprietary protocol it's a open source every cisco router and non-cisco router understand the PPP protocol.So we need to configure the PPP protocol if connection is between cisco and non-cisco router.

Question No: 11

How can you disable DTP on a switch port?

A. Configure the switch port as a trunk.

B. Add an interface on the switch to a channel group.

C. Change the operational mode to static access.

D. Change the administrative mode to access.

Answer: D

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