200-125 | Tested CCNA Routing and Switching 200-125 braindumps

New Questions 15

How does a Cisco switch respond if you boot it without a valid configuration in the NVRAM?

A. it enters setup mode.

B. it uses the running u2013configuration

C. It prompts you to restore the startup configuration

D. it enters user EXEC mode.

Answer: B

New Questions 16

Which tunneling mechanism embeds an IPv4 address within an IPv6 address?

A. Teredo

B. 6to4

C. 4to6

D. GRE

E. ISATAP

Answer: B

Explanation: ref :https://tools.ietf.org/html/rfc6052#section-2

New Questions 17

When you enable PortFast on a switch port, the port immediately transitions to which state?

A. learning

B. blocking

C. forwarding

D. listening

Answer: C

Explanation: PortFast causes a switch or trunk port to enter the spanning tree forwarding state immediately,

bypassing the listening and learning states. You can use PortFast on switch or trunk ports that

are connected to a single workstation, switch, or server to allow those devices to connect to the

network immediately, instead of waiting for the port to transition from the listening and learning

states to the forwarding state.

New Questions 18

On which type of port can switches interconnect for multi-VLAN communication?

A. interface port

B. access port

C. switch port

D. trunk port

Answer: D

New Questions 19

Which two statements about TACACS+ are true? (Choose two.)

A. It can run on a UNIX server.

B. It authenticates against the user database on the local device.

C. It is more secure than AAA authentication.

D. It is enabled on Cisco routers by default.

E. It uses a managed database.

Answer: B,C

New Questions 20

Which type of interface can negotiate an IP address for a PPPoE client?

A. Ethernet

B. dialer

C. serial

D. Frame Relay

Answer: B

New Questions 21

A router has learned three possible routes that could be used to reach a destination network One route is from EIGRP and has a composite metric of 07104371. Another route is from OSPF with a metric of 782 The last is from RIPv2 and has a metric of 4 Which route or routes will the router install in the routing table?

A. the EIGRP route

B. the OSPF route

C. the RIPv2 route

D. all three routes

E. the OSPF and RIPv2 routes

Answer: A

New Questions 22

which three options are fields in a basic ethernet data frame ?

A. preamble

B. time to live

C. version

D. header checksum

E. length type

F. frame check sequence

Answer: A,E,F

New Questions 23

Which command do you enter to view EIGRPv6 adjacencies?

A. show ipv6 eigrp 1 interface

B. show ipv6 route eigrp

C. showipv6 eigrp neighbors

D. show running-configuration eigrp

Answer: C

New Questions 24

Why has the Branch3 router lost connectivity with R1?

Use only show commands to troubleshoot because usage of the debug command is restricted on the Branch3 and R1 routers.

A. A PPP chap hostname mismatch is noticed between Branch3 and R1.

B. A PPP chap password mismatch is noticed between Branch3 and R1.

C. PPP encapsulation is not configured on Branch3.

D. The PPP chap hostname and PPP chap password commands are missing on the Branch3 router.

Answer: A

Explanation:

First we should check Branch3 (and R1) with the u201cshow ip interface briefu201d command to find any Layer1/Layer 2 issue.

We see the interfaces connecting between them are in u201cup/downu201d states which indicates an Layer 2 issue so we should check the configuration of these interfaces carefully with the u201cshow running-configu201d command and pay attention to these interfaces.

and on Branch3:

We learn from above config is R1 is using CHAP to authenticate Branch3 router (via the u201cppp authentication chapu201d command on R1). Branch3 router is sending CHAP hostname u201cBranch_3u201d and CHAP password u201cBranch3_Secret!u201d to R1 to be authenticated. Therefore we should check if R1 has already been configured with such username and password or not with the u201cshow running-configu201d command on R1:

R1_show_run_username.jpg

On R1 we see the configured username is u201cBranch3u201d, not u201cBranch_3u201d so the usernames here are mismatched and this is the problem -> Answer A is correct.