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November 18, 2018

Facts about examcollection 300 101


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New Cisco 300-101 Exam Dumps Collection (Question 9 - Question 18)

New Questions 9

Which three characteristics are shared by subinterfaces and associated EVNs? (Choose three.)

A. IP address

B. routing table

C. forwarding table

D. access control lists

E. NetFlow configuration

Answer: A,B,C

Topic 5, Infrastructure Security

53.For troubleshooting purposes, which method can you use in combination with the u201cdebug ip packetu201d command to limit the amount of output data?

A. You can disable the IP route cache globally.

B. You can use the KRON scheduler.

C. You can use an extended access list.

D. You can use an IOS parser.

E. You can use the RITE traffic exporter.


New Questions 10

A network administrator recently redistributed RIP routes into an OSPF domain. However, the administrator wants to configure the network so that instead of 32 external type-5 LSAs flooding into the OSPF network, there is only one.

What must the administrator do to accomplish this?

A. Configure summarization on R1 with area 1 range 172.16.32.0 255.255.224.0

B. Configure summarization on R1 with summary-address 172.16.32.0 255.255.224.0

C. Configure area 1 as a stub area with area 1 stub

D. Configure area 1 as a NSSA area with area 1 stub nssa

Answer: B

Explanation:

In many cases, the router doesn't even need specific routes to each and every subnet (for example, 172.16.1.0/24). It would be just as happy if it knew how to get to the major network (for example, 172.16.0.0/16) and let another router take it from there. In our telephone network example, the local telephone switch should only need to know to route a phone call to the switch for the called area code. Similarly, a router's ability to take a group of subnetworks and summarize them as one network (in other words, one advertisement) is called route summarization. Besides reducing the number of routing entries that a router must keep track of, route summarization can also help protect an external router from making multiple changes to its routing table due to instability within a particular subnet. For example, let's say that we were working on a router that connected to 172.16.2.0/24. As we were working on the router, we rebooted it several times. If we were not summarizing our routes, an external router would see each time 172.16.2.0/24 went away and came back. Each time, it would have to modify its own routing table. However, if our external router were receiving only a summary route (i.e., 172.16.0.0/16), then it wouldn't have to be concerned with our work on one particular subnet. This is especially a problem for EIGRP,

which can create stuck in active (SIA) routes that can lead to a network melt-down. Summarization Example We have the following networks that we want to advertise as a single summary route: * 172.16.100.0/24 * 172.16.101.0/24 * 172.16.102.0/24 * 172.16.103.0/24 * 172.16.104.0/24 * 172.16.105.0/24 * 172.16.106.0/24


New Questions 11

Which statement about the use of tunneling to migrate to IPv6 is true?

A. Tunneling is less secure than dual stack or translation.

B. Tunneling is more difficult to configure than dual stack or translation.

C. Tunneling does not enable users of the new protocol to communicate with users of the old protocol without dual-stack hosts.

D. Tunneling destinations are manually determined by the IPv4 address in the low-order 32 bits of IPv4-compatible IPv6 addresses.

Answer: C


New Questions 12

Refer to Exhibit:

Which statement about the configuration on the Cisco router is true?

A. The router sends only NTP traffic, using the loopback interface, and it disables eth0/0 from sending NTP traffic.

B. Eth0/0 sends NTP traffic on behalf of the loopback interface

C. The router sends only NTP traffic, using the eth0/0 interface, and it disables loopback0 from sending NTP traffic.

D. The router never sends NTP traffic, as using the loopback interface for NTP traffic is not supported on IOS routers.

Answer: C


New Questions 13

Which switching method is used when entries are present in the output of the command show ip cache?

A. fast switching

B. process switching

C. Cisco Express Forwarding switching

D. cut-through packet switching

Answer: A

Topic 2, Layer 2 Technologies

13.Prior to enabling PPPoE in a virtual private dialup network group, which task must be completed?

A. Disable CDP on the interface.

B. Execute the vpdn enable command.

C. Execute the no switchport command.

D. Enable QoS FIFO for PPPoE support.


New Questions 14

A router is configured for redistribution to advertise EIGRP routes into OSPF on a boundary router. Given the configuration:

router ospf 1

redistribute eigrp 1 metric 25 subnets

What is the function of the 25 parameter in the redistribute command?

A. It specifies the seed cost to be applied to the redistributed routes.

B. It specifies the administrative distance on the redistributed routes.

C. It specifies the metric limit of 25 subnets in each OSPF route advertisement.

D. It specifies a new process-id to inject the EIGRP routes into OSPF.

Answer: A


New Questions 15

Refer to the following access list. access-list 100 permit ip any any log

After applying the access list on a Cisco router, the network engineer notices that the router CPU utilization has risen to 99 percent. What is the reason for this?

A. A packet that matches access-list with the "log" keyword is Cisco Express Forwarding switched.

B. A packet that matches access-list with the "log" keyword is fast switched.

C. A packet that matches access-list with the "log" keyword is process switched.

D. A large amount of IP traffic is being permitted on the router.

Answer: C


New Questions 16

What is the default maximum segment size for TCP traffic?

A. 536

B. 1492

C. 1500

D. 1508

E. 3340

F. 4096

Answer: A


New Questions 17

Which two statements about OSPF E1 routes are true? (Choose two)

A. They are preferred over interarea routes

B. They use the OSPF cost from redistribution and the OSPF cost to the ASBR.

C. They are preferred over E2 routes

D. They use only the OSPF cost to the ASBR

E. They use only the OSPF cost from redistribution

Answer: B,C

Explanation: http://blog.ine.com/2011/04/04/understanding-ospf-external-route-path- selection/


New Questions 18

CORRECT TEXTYou are a network engineer with ROUTE.com, a small IT company. They have recently merged two organizations and now need to merge their networks as shown in the topology exhibit. One network is using OSPF as its IGP and the other is using EIGRP as its IGP. R4 has been added to the existing OSPF network to provide the interconnect between the OSPF and EIGRP networks. Two links have been added that will provide redundancy.

The network requirements state that you must be able to ping and telnet from loopback 101 on R1 to the OPSF domain test address of 172.16.1.100. All traffic must use the shortest path that provides the greatest bandwidth. The redundant paths from the OSPF network to the EIGRP network must be available in case of a link failure. No static or default routing is allowed in either network.

A previous network engineer has started the merger implementation and has successfully assigned and verified all IP addressing and basic IGP routing. You have been tasked with completing the implementation and ensuring that the network requirements are met. You may not remove or change any of the configuration commands currently on any of the routers. You may add new commands or change default values.

Answer:

First we need to find out 5 parameters (Bandwidth, Delay, Reliability, Load, MTU)

of the s0/0/0 interface (the interface of R2 connected to R4) for redistribution:

R2#show interface s0/0/0

Write down these 5 parameters, notice that we have to divide the Delay by 10 because the metric unit is in tens of microsecond. For example, we get Bandwidth=1544 Kbit, Delay=20000 us, Reliability=255, Load=1, MTU=1500 bytes then we would redistribute as follows:

R2#config terminal R2(config)# router ospf 1

R2(config-router)# redistribute eigrp 100 metric-type 1 subnets R2(config-router)#exit

R2(config-router)#router eigrp 100

R2(config-router)#redistribute ospf 1 metric 1544 2000 255 1 1500

Note: In fact, these parameters are just used for reference and we can use other parameters with no problem.

If the delay is 20000us then we need to divide it by 10, that is 20000 / 10 = 2000) For R3 we use the show interface fa0/0 to get 5 parameters too

R3#show interface fa0/0

For example we get Bandwidth=10000 Kbit, Delay=1000 us, Reliability=255, Load=1, MTU=1500 bytes

R3#config terminal R3(config)#router ospf 1

R3(config-router)#redistribute eigrp 100 metric-type 1 subnets R3(config)#exit

R3(config-router)#router eigrp 100

R3(config-router)#redistribute ospf 1 metric 10000 100 255 1 1500

Finally you should try to u201cshow ip routeu201d to see the 172.16.100.1 network (the network behind R4) in the routing table of R1 and make a ping from R1 to this network.

Note: If the link between R2 and R3 is FastEthernet link, we must put the command below under EIGRP process to make traffic from R1 to go through R3 (R1 -> R2 -> R3 -> R4), which is better than R1 -> R2 -> R4.

R2(config-router)# distance eigrp 90 105

This command sets the Administrative Distance of all EIGRP internal routes to 90 and all EIGRP external routes to 105, which is smaller than the Administrative Distance of OSPF

(110) -> the link between R2 & R3 will be preferred to the serial link between R2 & R4. Note: The actual OPSF and EIGRP process numbers may change in the actual exam so be sure to use the actual correct values, but the overall solution is the same.


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