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Exam 200-301 All Questions

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Exam 200-301 topic 1 question 400 discussion

Actual exam question from Cisco's 200-301
Question #: 400
Topic #: 1
[All 200-301 Questions]

Refer to the exhibit. Which address and mask combination represents a summary of the routes learned by EIGRP?

  • A. 192.168.25.0 255.255.255.240
  • B. 192.168.25.0 255.255.255.252
  • C. 192.168.25.16 255.255.255.240
  • D. 192.168.25.16 255.255.255.252
  • E. 192.168.25.28 255.255.255.240
  • F. 192.168.25.28 255.255.255.252
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️

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Kareemelkh
Highly Voted 4 years, 3 months ago
Ali526 check this link it will clear you confusion , I hade the same doubt https://youtu.be/QqEcCzhlWis
upvoted 40 times
6bd7702
6 months, 1 week ago
Thats how you get hacked
upvoted 1 times
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aaaaaaaaakkk
2 years, 10 months ago
this more then helpful thank you
upvoted 3 times
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Sium93
1 year, 4 months ago
Thanks a lot
upvoted 2 times
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LLAMBRA
Highly Voted 3 years, 9 months ago
------------------------------------------ | ====== | 192.168.25|.20 -->0001| 0100 192.168.25|.16 -->0001| 0000 192.168.25|.24 -->0001| 1000 192.168.25|.24 -->0001| 1000 128 64 32 16| 8 4 2 1 --------------------- 0 0 0 1| 0 1 0 0 0 0 0 1| 0 0 0 0 0 0 0 1| 1 0 0 0 0 0 0 1| 1 0 0 0 192.168.25.16/28 == 255.255.255.240 ==>192.168.25.16 /255.255.255.240 === >> answer is C <<===
upvoted 27 times
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Rich_rude
Most Recent 11 months, 1 week ago
Since there is no prefix and ad is the same wouldn’t we just go by metric to get the answer?
upvoted 3 times
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[Removed]
1 year, 1 month ago
Selected Answer: C
C is correct
upvoted 3 times
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kyleptt
1 year, 9 months ago
https://www.youtube.com/watch?v=QqEcCzhlWis good video that helps
upvoted 2 times
Mariushas
1 year, 6 months ago
This one helps more, thanks
upvoted 1 times
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bond071982
2 years, 1 month ago
Is cisco 200-301 webpage down today?
upvoted 6 times
Elsjona1
2 years, 1 month ago
i have the same problem
upvoted 2 times
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throwaway_account
2 years, 1 month ago
It's hilarious that they had their "unlimited" promotion last week, then immediately removed all Cisco content. It's like they knew this was coming, but wanted a cash grab first.
upvoted 1 times
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monoki
2 years, 1 month ago
i can't find any cisco exams on the site, i have the same problem.
upvoted 1 times
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Channaveera
2 years, 1 month ago
A. 192.168.25.0 255.255.255.240 covers (192.168.25.1 - 15 (boradcast inclusive) B. 192.168.25.0 255.255.255.252 covers (192.168.25.1 - 3 (boradcast inclusive) C. 192.168.25.16 255.255.255.240 covers (192.168.25.16 - 192.168.25.31 (boradcast inclusive) D. 192.168.25.16 255.255.255.252 covers (192.168.25.16 - 192.168.25.19 (boradcast inclusive) E. 192.168.25.28 255.255.255.240 covers (192.168.25.28 - 192.168.25.43 (broadcast inclusive) F. 192.168.25.28 255.255.255.252 covers (192.168.25.28 - 192.168.25.31 (broadcast inclusive) 192.168.25.16 255.255.255.240 didn't cover all the range of IPs
upvoted 1 times
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Freddy01
2 years, 5 months ago
C is the correct answer. Read the question carefully, it's saying what would be the "Summary of the route" meaning summary network address or also known as route summarisation in subnetting. Option C covers all the addresses in the range starting from .16 to .30. Broadcast address on this subnet is 192.168.25.31 which is always one address less from the next block of addresses, which in this case will be a .32 block ending at .47 as it's Broadcast and .48 as the next block. So, 192.168.25.16/28 255.255.255.240 is the summary address for those EIGRP learnt subnets in the routing table showing up in the exhibit. Another note for those who are confusing it with /30 network: Read the question as it's asking for route summarisation address which will cover .16 to .28 addresses and your /30 prefix for 192.168.25.16 will only go up to .19(Broadcast on this subnet) and then it would be .20 block which does NOT fall in that .16 block as it's the next block of addresses. So, .16 only has .17 and .18 as two allocable host addresses with of course .19 being the broadcast address on this subnet. Hence it's incorrect. Right answer is C
upvoted 7 times
1stAid
1 year, 3 months ago
Good explanation, easier to understand
upvoted 1 times
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THEKYPTONIAN
2 years, 6 months ago
min - max (192.168.25.16 - 192.168.25.30 = 14 ) so 14 = /28
upvoted 3 times
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TA77
2 years, 10 months ago
The correct answer is C. You need to find which network range covers all the EIGRP learned addresses in the routing table. The ranges are as follows: Answer A: 192.168.25.0 - 192.168.25.15 Answer B: 192.168.25.0 - 192.168.25.3 Answer C: 192.168.25.16 - 192.168.25.31 Answer D: 192.168.25.16 - 192.168.25.19 Answer E: 192.168.25.28 - 192.168.25.43 Answer F: 192.168.25.28 - 192.168.25.31 How to find the ranges? Well, there are different ways to find the ranges. Personally, I'm using the 'Seven Seconds Subnetting' technique by Professor Messer. You may search Youtube for that.
upvoted 4 times
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AWSEMA
2 years, 10 months ago
128 64 32 16 8 4 2 1 1 0 1 0 0 1 0 0 0 0 1 1 0 0 0 1 1 1 0 0
upvoted 1 times
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[Removed]
3 years ago
How did you get the subnet mask of /28
upvoted 2 times
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Darrien1301
3 years ago
Is it possible to calculate like this: 4 Subnets = 2^4 combinations = 16 and then for the mask 256-16 = 240?
upvoted 1 times
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shakyak
3 years, 4 months ago
To those of you who are confused about how the subnet is decided, all the binary that matches is considered 1, and those that don't match is considered 0. So, for the example below: 0 0 0 1| 0 1 0 0 0 0 0 1| 0 0 0 0 0 0 0 1| 1 0 0 0 0 0 0 1| 1 0 0 0 The final four digits don't match which makes the final four digital all zeros. Hence, the final subnet would be: 11111111.11111111.11111111.11110000 = 240
upvoted 2 times
Steve107
8 months, 1 week ago
"...how the subnet (mask) is decided, all the binary that matches is considered 1, ...don't match is considered 0..."
upvoted 1 times
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Kahowl
3 years, 8 months ago
This is stating a /30 subnet, a summary of this address should be: B) 192.168.25.0 255.255.255.252
upvoted 2 times
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Adaya
3 years, 10 months ago
I agree the answer is c
upvoted 1 times
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Zerotime0
4 years, 3 months ago
In summary ,Summary encompasses 4 subnets.mask .240 fits better 4x4 =16
upvoted 2 times
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A (35%)
C (25%)
B (20%)
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