[2021-New] Cisco 200-125 Dumps With Update Exam Questions (91-100)

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Q1. CORRECT TEXT - (Topic 8)

Which protocol authenticates connected devices before allowing them to access the LAN?

A. 802.1d

B. 802.11

C. 802.1w

D. 802.1x

Answer: D

Explanation:

802.1X authentication involves three parties: a supplicant, an authenticator, and an authentication server. The supplicant is a client device (such as a laptop) that wishes to attach to the LAN/WLAN. The term 'supplicant' is also used interchangeably to refer to the software running on the client that provides credentials to the authenticator. The

authenticator is a network device, such as an Ethernet switch or wireless access point; and the authentication server is typically a host running software supporting the RADIUS and EAP protocols.

The authenticator acts like a security guard to a protected network. The supplicant (i.e., client device) is not allowed access through the authenticator to the protected side of the network until the supplicant’s identity has been validated and authorized. An analogy to this is providing a valid visa at the airport's arrival immigration before being allowed to enter the country. With 802.1X port-based authentication, the supplicant provides credentials, such as user name/password or digital certificate, to the authenticator, and the authenticator forwards the credentials to the authentication server for verification. If the authentication server determines the credentials are valid, the supplicant (client device) is allowed to access resources located on the protected side of the network.

Q2. - (Topic 8)

Which feature is configured by setting a variance that is at least two times the metric?

A. equal cost load balancing

B. unequal cost load balancing

C. Path selection

D. path count

Answer: B

Q3. - (Topic 3)

Why do large OSPF networks use a hierarchical design? (Choose three.)

A. to decrease latency by increasing bandwidth

B. to reduce routing overhead

C. to speed up convergence

D. to confine network instability to single areas of the network

E. to reduce the complexity of router configuration

F. to lower costs by replacing routers with distribution layer switches

Answer: B,C,D

Explanation:

OSPF implements a two-tier hierarchical routing model that uses a core or backbone tier known as area zero (0). Attached to that backbone via area border routers (ABRs) are a number of secondary tier areas. The hierarchical approach is used to achieve the following:

•Rapid convergence because of link and/or switch failures

•Deterministic traffic recovery

•Scalable and manageable routing hierarchy, reduced routing overhead.

Q4. - (Topic 5)

Which option is a valid IPv6 address?

A. 2001:0000:130F::099a::12a

B. 2002:7654:A1AD:61:81AF:CCC1

C. FEC0:ABCD:WXYZ:0067::2A4

D. 2004:1:25A4:886F::1

Answer: D

Explanation:

An IPv6 address is represented as eight groups of four hexadecimal digits, each group representing 16 bits (two octets). The groups are separated by colons (:). An example of an IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334. The leading 0’s in a group can be collapsed using ::, but this can only be done once in an IP address.

Q5. - (Topic 8)

Refer to the exhibit.

While troubleshooting a switch, you executed the show interface port-channel 1 etherchannel command and it returned this output. Which information is provided by the Load value?

A. the percentage of use of the link

B. the preference of the link

C. the session count of the link

D. the number source-destination pairs on the link

Answer: D

Q6. - (Topic 8)

Refer to the exhibit.

What is the effect of the given configuration?

A. It configures an inactive switch virtual interface.

B. It configures an active management interface.

C. It configures the native VLAN.

D. It configures the default VLAN.

Answer: A

Q7. - (Topic 3)

Users on the 172.17.22.0 network cannot reach the server located on the 172.31.5.0 network. The network administrator connected to router Coffee via the console port, issued the show ip route command, and was able to ping the server.

Based on the output of the show ip route command and the topology shown in the graphic, what is the cause of the failure?

A. The network has not fully converged.

B. IP routing is not enabled.

C. A static route is configured incorrectly.

D. The FastEthernet interface on Coffee is disabled.

E. The neighbor relationship table is not correctly updated.

F. The routing table on Coffee has not updated.

Answer: C

Explanation:

The default route or the static route was configured with incorrect next-hop ip address 172.19.22.2. The correct IP address will be 172.18.22.2 to reach server located on 172.31.5.0 network. IP route 0.0.0.0 0.0.0.0 172.18.22.2

Q8. - (Topic 7)

Refer to the exhibit.

If the devices produced the given output, what is the cause of the EtherChannel problem?

A. SW1's Fa0/1 interface is administratively shut down.

B. There is an encapsulation mismatch between SW1's Fa0/1 and SW2's Fa0/1 interfaces.

C. There is an MTU mismatch between SW1's Fa0/1 and SW2's Fa0/1 interfaces.

D. There is a speed mismatch between SW1's Fa0/1 and SW2's Fa0/1 interfaces.

Answer: D

Explanation:

You must configure all interfaces in an EtherChannel to operate at the same speeds and duplex modes. Based on the output shown, SW1 is configured to run at 10Mb while SW2 is operating at 100 Mb.

Q9. - (Topic 8)

Which technology allows a large number of private IP addresses to be represented by a smaller number of public IP addresses?

A. NAT

B. NTP

C. RFC 1631

D. RFC 1918

Answer: A

Q10. - (Topic 7)

Which router IOS commands can be used to troubleshoot LAN connectivity problems? (Choose three.)

A. ping

B. tracert

C. ipconfig

D. show ip route

E. winipcfg

F. show interfaces

Answer: A,D,F

Explanation:

Ping, show ip route, and show interfaces are all valid troubleshooting IOS commands. Tracert, ipconfig, and winipcfg are PC commands, not IOS.