[2021-New] Cisco 200-125 Dumps With Update Exam Questions (101-110)

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Q1. - (Topic 5)

An administrator must assign static IP addresses to the servers in a network. For network 192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the last usable host address. Which of the following should be entered into the IP properties box for the sales server?

A. IP address: 192.168.20.14

Subnet Mask: 255.255.255.248

Default Gateway: 192.168.20.9

B. IP address: 192.168.20.254

Subnet Mask: 255.255.255.0

Default Gateway: 192.168.20.1

C. IP address: 192.168.20.30

Subnet Mask: 255.255.255.248

Default Gateway: 192.168.20.25

D. IP address: 192.168.20.30

Subnet Mask: 255.255.255.240

Default Gateway: 192.168.20.17

E. IP address: 192.168.20.30

Subnet Mask: 255.255.255.240

Default Gateway: 192.168.20.25

Answer: C

Explanation:

For the 192.168.20.24/29 network, the usable hosts are 192.168.24.25 (router) – 192.168.24.30 (used for the sales server).

Q2. - (Topic 4)

Refer to the exhibit.

Which statement describes DLCI 17?

A. DLCI 17 describes the ISDN circuit between R2 and R3.

B. DLCI 17 describes a PVC on R2. It cannot be used on R3 or R1.

C. DLCI 17 is the Layer 2 address used by R2 to describe a PVC to R3.

D. DLCI 17 describes the dial-up circuit from R2 and R3 to the service provider.

Answer: C

Explanation:

DLCI-Data Link Connection Identifier Bits: The DLCI serves to identify the virtual connection so that the receiving end knows which information connection a frame belongs to. Note that this DLCI has only local significance. Frame Relay is strictly a Layer 2 protocol suite.

Q3. - (Topic 7)

Refer to the exhibit.

A network administrator attempts to ping Host2 from Host1 and receives the results that are shown. What is the problem?

A. The link between Host1 and Switch1 is down.

B. TCP/IP is not functioning on Host1

C. The link between Router1 and Router2 is down.

D. The default gateway on Host1 is incorrect.

E. Interface Fa0/0 on Router1 is shutdown.

F. The link between Switch1 and Router1 is down.

Answer: C

Explanation:

Host1 tries to communicate with Host2. The message destination host unreachable from Router1 indicates that the problem occurs when the data is forwarded from Host1 to Host2. According to the topology, we can infer that the link between Router1 and Router2 is down.

Q4. - (Topic 3)

On a corporate network, hosts on the same VLAN can communicate with each other, but they are unable to communicate with hosts on different VLANs. What is needed to allow communication between the VLANs?

A. a router with subinterfaces configured on the physical interface that is connected to the switch

B. a router with an IP address on the physical interface connected to the switch

C. a switch with an access link that is configured between the switches

D. a switch with a trunk link that is configured between the switches

Answer: A

Explanation:

Different VLANs can't communicate with each other, they can communicate with the help of Layer3 router. Hence, it is needed to connect a router to a switch, then make the sub- interface on the router to connect to the switch, establishing Trunking links to achieve communications of devices which belong to different VLANs.

When using VLANs in networks that have multiple interconnected switches, you need to use VLAN trunking between the switches. With VLAN trunking, the switches tag each frame sent between switches so that the receiving switch knows to what VLAN the frame belongs. End user devices connect to switch ports that provide simple connectivity to a single VLAN each. The attached devices are unaware of any VLAN structure.

By default, only hosts that are members of the same VLAN can communicate. To change this and allow inter-VLAN communication, you need a router or a layer 3 switch.

Here is the example of configuring the router for inter-vlan communication

RouterA(config)#int f0/0.1 RouterA(config-subif)#encapsulation ? dot1Q IEEE 802.1Q Virtual LAN

RouterA(config-subif)#encapsulation dot1Q or isl VLAN ID RouterA(config-subif)# ip address x.x.x.x y.y.y.y

Q5. - (Topic 7)

Refer to the exhibit.

An administrator pings the default gateway at 10.10.10.1 and sees the output as shown. At which OSI layer is the problem?

A. data link layer

B. application layer

C. access layer

D. session layer

E. network layer

Answer: E

Explanation:

The command ping uses ICMP protocol, which is a network layer protocol used to propagate control message between host and router. The command ping is often used to verify the network connectivity, so it works at the network layer.

Q6. - (Topic 6)

What will be the result if the following configuration commands are implemented on a Cisco switch?

Switch(config-if)# switchport port-security

Switch(config-if)# switchport port-security mac-address sticky

A. A dynamically learned MAC address is saved in the startup-configuration file.

B. A dynamically learned MAC address is saved in the running-configuration file.

C. A dynamically learned MAC address is saved in the VLAN database.

D. Statically configured MAC addresses are saved in the startup-configuration file if frames from that address are received.

E. Statically configured MAC addresses are saved in the running-configuration file if frames from that address are received.

Answer: B

Explanation:

In the interface configuration mode, the command switchport port-security mac-address sticky enables sticky learning. When entering this command, the interface converts all the dynamic secure MAC addresses to sticky secure MAC addresses.

Q7. - (Topic 7)

An administrator is trying to ping and telnet from SwitchC to RouterC with the results shown below.

Click the console connected to RouterC and issue the appropriate commands to answer the questions.

What would be the effect of issuing the command ip access-group 115 in on the s0/0/1 interface?

A. No host could connect to RouterC through s0/0/1.

B. Telnet and ping would work but routing updates would fail.

C. FTP, FTP-DATA, echo, and www would work but telnet would fail.

D. Only traffic from the 10.4.4.0 network would pass through the interface.

Answer: A

Explanation:

First let’s see what was configured on interface S0/0/1:

Q8. - (Topic 5)

Refer to the exhibit.

What is the cause of the Syslog output messages?

A. The EIGRP neighbor on Fa0/1 went down due to a failed link.

B. The EIGRP neighbor connected to Fa0/1 is participating in a different EIGRP process, causing the adjacency to go down.

C. A shut command was executed on interface Fa0/1, causing the EIGRP adjacency to go down.

D. Interface Fa0/1 has become error disabled, causing the EIGRP adjacency to go down.

Answer: C

Explanation:

The first lines of the message show that a configuration change was made, and that the fa0/1 interface changed to a state of administratively down. This can only be done by issuing the shutdown command. The last line indicates that this caused an EIGRP neighbor adjacency to go down.

Q9. - (Topic 8)

Which two statements about northbound and southbound APIs are true? (Choose two.)

A. Only southbound APIs allow program control of the network.

B. Only northbound APIs allow program control of the network.

C. Only southbound API interfaces use a Service Abstraction Layer.

D. Only northbound API interfaces use a Service Abstraction Layer.

E. Both northbound and southbound API interfaces use a Service Abstraction Layer.

F. Both northbound and southbound APIs allow program control of the network.

Answer: B,C

Q10. - (Topic 5)

Which three statements about the features of SNMPv2 and SNMPv3 are true? (Choose three.)

A. SNMPv3 enhanced SNMPv2 security features.

B. SNMPv3 added the Inform protocol message to SNMP.

C. SNMPv2 added the Inform protocol message to SNMP.

D. SNMPv3 added the GetBulk protocol messages to SNMP.

E. SNMPv2 added the GetBulk protocol message to SNMP.

F. SNMPv2 added the GetNext protocol message to SNMP.

Answer: A,C,E

Explanation:

SNMPv1/v2 can neither authenticate the source of a management message nor provide encryption. Without authentication, it is possible for nonauthorized users to exercise SNMP network management functions. It is also possible for nonauthorized users to eavesdrop on management information as it passes from managed systems to the management system. Because of these deficiencies, many SNMPv1/v2 implementations are limited to simply a read-only capability, reducing their utility to that of a network monitor; no network control applications can be supported. To correct the security deficiencies of SNMPv1/v2, SNMPv3 was issued as a set of Proposed Standards in January 1998. -> A is correct.

The two additional messages are added in SNMP2 (compared to SNMPv1)

GetBulkRequest The GetBulkRequest message enables an SNMP manager to access large chunks of data. GetBulkRequest allows an agent to respond with as much information as will fit in the response PDU. Agents that cannot provide values for all variables in a list will send partial information. -> E is correct.

InformRequest The InformRequest message allows NMS stations to share trap information. (Traps are issued by SNMP agents when a device change occurs.) InformRequest messages are generally used between NMS stations, not between NMS stations and agents. -> C is correct.

Note: These two messages are carried over SNMPv3.