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Cisco Exam 200-301 Topic 10 Question 79 Discussion

Actual exam question for Cisco's 200-301 exam
Question #: 79
Topic #: 10
[All 200-301 Questions]

All physical cabling is in place. Router R4 and PCI are fully configured and

inaccessible. R4's WAN interfaces use .4 in the last octet for each subnet.

Configurations should ensure that connectivity is established end-to-end.

1 . Configure static routing to ensure RI prefers the path through R2 to

reach only PCI on R4's LAN

2. Configure static routing that ensures traffic sourced from RI will take

an alternate path through R3 to PCI in the event of an outage along

the primary path

3. Configure default routes on RI and R3 to the Internet using the least number of hops

Guidelines

This is a lab item in which tasks will be performed on virtual devices.

* Refer to the Tasks tab to view the tasks for this lab item.

* Refer to the Topology tab to access the device console(s) and perform the tasks.

* Console access is available for all required devices by clicking the device icon or using

the tab(s) above the console window.

* All necessary preconfigurations have been applied.

* Do not change the enable password or hostname for any device.

* Save your configurations to NVRAM before moving to the next item.

* Click Next at the bottom of the screen to submit this lab and move to the next question.

* When Next is clicked, the lab closes and cannot be reopened.

Show Suggested Answer Hide Answer
Suggested Answer: A

To configure static routing on R1 to ensure that it prefers the path through R2 to reach only PC1 on R4's LAN, you need to create a static route for the host 10.0.0.100/8 with a next-hop address of 20.0.0.2, which is the IP address of R2's interface connected to R1. You also need to assign a lower administrative distance (AD) to this route than the default AD of 1 for static routes, so that it has a higher preference over other possible routes. For example, you can use an AD of 10 for this route. To create this static route, you need to enter the following commands on R1's console:

R1#configure terminal R1(config)#ip route 10.0.0.100 255.0.0.0 20.0.0.2 10 R1(config)#end

To configure static routing on R1 that ensures that traffic sourced from R1 will take an alternate path through R3 to PC1 in the event of an outage along the primary path, you need to create another static route for the host 10.0.0.100/8 with a next-hop address of 40.0.0.2, which is the IP address of R3's interface connected to R1. You also need to assign a higher AD to this route than the AD of the primary route, so that it has a lower preference and acts as a backup route. For example, you can use an AD of 20 for this route. This type of static route is also known as a floating static route. To create this static route, you need to enter the following commands on R1's console:

R1#configure terminal R1(config)#ip route 10.0.0.100 255.0.0.0 40.0.0.2 20 R1(config)#end

To configure default routes on R1 and R3 to the Internet using the least number of hops, you need to create a static route for the network 0.0.0.0/0 with a next-hop address of the ISP's interface connected to each router respectively. A default route is a special type of static route that matches any destination address and is used when no other specific route is available. The ISP's interface connected to R1 has an IP address of 10.0.0.4, and the ISP's interface connected to R3 has an IP address of 50.0.0.4. To create these default routes, you need to enter the following commands on each router's console:

On R1: R1#configure terminal R1(config)#ip route 0.0.0.0 0.0.0.0 10.0.0.4 R1(config)#end

On R3: R3#configure terminal R3(config)#ip route 0.0.0.0 0.0.0.0 50.0.0.4 R3(config)#end


Contribute your Thoughts:

Daniel
6 months ago
Let's follow the guidelines and save our configurations to NVRAM before moving on.
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Ezekiel
6 months ago
Configuring default routes on RI and R3 to the Internet using the least number of hops seems important too.
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Isabelle
7 months ago
I also believe we should have an alternate path through R3 in case of an outage.
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Alexis
7 months ago
Agreed. We should make sure RI prefers the path through R2 to reach PCI on R4's LAN.
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Portia
7 months ago
I think we need to configure static routing to ensure connectivity.
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Jame
8 months ago
Haha, good one! And don't forget the default routes on R1 and R3 to the Internet. We need to make sure we use the least number of hops, so I'm thinking we should go with the direct route. Might as well keep it simple, right?
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Merrilee
8 months ago
Yeah, that's the easy part. The tricky bit is setting up the alternate path through R3 in case of an outage. We've gotta be careful not to mess up the primary path here. Maybe we can throw in a few one-liners to lighten the mood, like 'Hey, at least we don't have to worry about dynamic routing, am I right?'
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Anthony
8 months ago
Alright, let's break this down. First, we need to configure the static routing on R1 to prefer the path through R2 to reach PCI on R4's LAN. That should be pretty straightforward, right?
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Marvel
8 months ago
Great, let's move on to the next question and submit our lab.
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Therese
8 months ago
I think we're all set with the configurations on R1 and R3.
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Frankie
8 months ago
Let's make sure we save our configurations before moving on to the next item.
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Markus
8 months ago
Don't forget to configure default routes on R1 and R3 to the Internet.
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Matthew
8 months ago
We also need to configure static routing to take an alternate path through R3 in case of an outage.
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Serina
8 months ago
Yes, configuring static routing on R1 to prefer the path through R2 should be simple.
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Lonny
8 months ago
Hmm, this question looks tricky. We need to configure static routing to ensure R1 prefers the path through R2 to reach PCI on R4's LAN, and also set up an alternate path through R3 in case of an outage. Oh, and default routes on R1 and R3 to the Internet using the least number of hops. I wonder if we can sneak in a few jokes while we figure this out.
upvoted 0 times
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