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New Cisco 200-125 Exam Dumps Collection (Question 10 - Question 19)

Question No: 10

A router has two Fast Ethernet interfaces and needs to connect to four VLANs in the local network. How can you accomplish this task, using the fewest physical interfaces and without decreasing network performance?

A. Use a hub to connect the four VLANS with a Fast Ethernet interface on the router.

B. Add a second router to handle the VLAN traffic.

C. Add two more Fast Ethernet interfaces.

D. Implement a router-on-a-stick configuration.

Answer: D

Explanation:

A router on a stick allows you to use sub-interfaces to create multiple logical networks on a single physical interface.


Question No: 11

Which statement describes the process ID that is used to run OSPF on a router?

A. It is globally significant and is used to represent the AS number.

B. It is locally significant and is used to identify an instance of the OSPF database.

C. It is globally significant and is used to identify OSPF stub areas.

D. It is locally significant and must be the same throughout an area.

Answer: B

Explanation:

The Process ID for OSPF on a router is only locally significant and you can use the same number on each router, or each router can have a different number-it just doesn't matter. The numbers you can use are from 1 to 65,535. Don't get this confused with area numbers, which can be from 0 to 4.2 billion.


Question No: 12

Which characteristics are representatives of a link-state routing protocol? (Choose three.)

A. provides common view of entire topology

B. exchanges routing tables with neighbors

C. calculates shortest path

D. utilizes event-triggered updates

E. utilizes frequent periodic updates

Answer: A,C,D

Explanation:

Each of routers running link-state routing protocol learns paths to all the destinations in its u201careau201d so we can say although it is a bit unclear.

Link-state routing protocols generate routing updates only (not the whole routing table) when a change occurs in the network topology so

Link-state routing protocol like OSPF uses Dijkstra algorithm to calculate the shortest path -

>.

Unlike Distance vector routing protocol (which utilizes frequent periodic updates), link-state routing protocol utilizes event-triggered updates (only sends update when a change occurs)

->.


Question No: 13

Which two statistics appear in show frame-relay map output? (Choose two.)

A. the number of BECN packets that are received by the router

B. the value of the local DLCI

C. the number of FECN packets that are received by the router

D. the status of the PVC that is configured on the router

E. the IP address of the local router

Answer: B,D

Explanation:

Sample u201cshow frame-relay mapu201d output: R1#sh frame map

Serial0/0 (up): ip 10.4.4.1dlci 401(0x191,0x6410), dynamic, broadcast,,status defined, active

Serial0/0 (up): ip 10.4.4.3dlci 403(0x193,0x6430), dynamic, broadcast,,status defined, active

Serial0/0 (up): ip 10.4.4.4dlci 401(0x191,0x6410), static, CISCO,status defined, active


Question No: 14

How is an EUI-64 format interface ID created from a 48-bit MAC address?

A. by appending 0xFF to the MAC address

B. by prefixing the MAC address with 0xFFEE

C. by prefixing the MAC address with 0xFF and appending 0xFF to it

D. by inserting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address

E. by prefixing the MAC address with 0xF and inserting 0xF after each of its first three bytes

Answer: D

Explanation:

The modified EUI-64 format interface identifier is derived from the 48-bit link-layer (MAC) address by inserting the hexadecimal number FFFE between the upper three bytes (OUI field) and the lower three bytes (serial number) of the link layer address.


Question No: 15

Refer to the exhibit.

Given this output for SwitchC, what should the network administrator's next action be?

A. Check the trunk encapsulation mode for SwitchC's fa0/1 port.

B. Check the duplex mode for SwitchC's fa0/1 port.

C. Check the duplex mode for SwitchA's fa0/2 port.

D. Check the trunk encapsulation mode for SwitchA's fa0/2 port.

Answer: C

Explanation:

Here we can see that this port is configured for full duplex, so the next step would be to check the duplex setting of the port on the other switch. A mismatched trunk encapsulation would not result in input errors and CRC errors.


Question No: 16

A network administrator enters the following command on a router: logging trap 3. What are three message types that will be sent to the Syslog server? (Choose three.)

A. informational

B. emergency

C. warning

D. critical

E. debug

F. error

Answer: B,D,F

Explanation:

The Message Logging is divided into 8 levels as listed below:

Level Keyword Description 0

emergencies System is unusable 1

alerts

Immediate action is needed 2

critical

Critical conditions exist 3

errors

Error conditions exist

4

warnings

Warning conditions exist 5

notification

Normal, but significant, conditions exist 6

informational Informational messages 7

debugging Debugging messages

If you specify a level with the u201cloggingtrap levelu201d command, that level and all the higher levels will be logged. For example, by using the u201clogging trap 3 command, all the logging of emergencies, alerts, critical, and errors, will be logged.


Question No: 17

Which two of these statements regarding RSTP are correct? (Choose two.)

A. RSTP cannot operate with PVST+.

B. RSTP defines new port roles.

C. RSTP defines no new port states.

D. RSTP is a proprietary implementation of IEEE 802.1D STP.

E. RSTP is compatible with the original IEEE 802.1D STP.

Answer: B,E

Explanation:

When network topology changes, rapid spanning tree protocol (IEEE802.1W, referred to as RSTP) will speed up significantly the speed to re-calculate spanning tree. RSTP not only defines the role of other ports: alternative port and backup port, but also defines status of 3 ports: discarding status, learning status, forwarding status.

RSTP is 802.1D standard evolution, not revolution. It retains most of the parameters, and makes no changes.


Question No: 18

Which subnet mask would be appropriate for a network address range to be subnetted for up to eight LANs, with each LAN containing 5 to 26 hosts?

A. 0.0.0.240

B. 255.255.255.252

C. 255.255.255.0

D. 255.255.255.224

E. 255.255.255.240

Answer: D

Explanation:

For a class C network, a mask of 255.255.255.224 will allow for up to 8 networks with 32 IP addresses each (30 usable).


Question No: 19

Which command can you use to manually assign a static IPv6 address to a router interface?

A. ipv6 autoconfig 2001:db8:2222:7272::72/64

B. ipv6 address 2001:db8:2222:7272::72/64

C. ipv6 address PREFIX_1 ::1/64

D. ipv6 autoconfig

Answer: B

Explanation:

To assign an IPv6 address to an interface, use the u201cipv6 addressu201d command and specify the IP address you wish to use.


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