CCNA 640-802 Questions with Explanation Q1

Q1: If an Ethernet port on router was assigned an IP address of 172.16.112.1/20, what is the maximum number of hosts allowed on this subnet? A. 1024 B. 2046 C. 4094 D. 4096 E. 8190 Answer: C Explanation: Given IP address of 172.16.112.1 / 20, subnet mask: 255.255.240.0 max. num of hosts =(( 2^12) -2 ) = 4096-2 = 4094
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An access list was written with the four statements shown in the graphic. Which single access list statement will combine all four of these statements into a single statements that will have exactly the same effect? A. access-list 10 permit 172.29.16.0 0.0.0.255 B. access-list 10 permit 172.29.16.0 0.0.1.255 C. access-list 10 permit 172.29.16.0 0.0.3.255 D. access-list 10 permit 172.29.16.0 0.0.15.255 E. access-list 10 permit 172.29.0.0 0.0.255.255 Answer: C Explanation: 172.29.16.0…
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Refer to the exhibit , what is the most efficient summarization that R1 can use to advertise its networks to R2? A. 172.1.0.0/22 B. 172.1.0.0/21 C. 172.1.4.0/22 D. 172.1.4.0/24 172.1.5.0/24 172.1.6.0/24 172.1.7.0/24 E. 172.1.4.0/25 172.1.4.128/25 172.1.5.0/24 172.1.6.0/24172.1.7.0/24 Answer : C Explanation:Route Summarization Overview:In large internetworks, hundreds, or even thousands, of network addresses can exist. It is often problematic for routers to maintain this volume of routes in their routing tables….
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