Exam 200-301 topic 1 question 1 discussion

A. default route The default route is 0.0.0.0/0, it is used to reach all destinations not included in the routing table. But the router already has a route to 10.10.13.10/32. The default route is not needed. Wrong answer. B. network route The routing table includes a route to 10.10.13.0/25. This subnet has these characteristics: 7 bits in the host ID = (2^7 – 2) = 126 IP addresses 1st IP address = 10.10.13.1 Last IP address = 10.10.13.126 This route includes address 10.10.13.10 and is an OSPF route (see the leading O). Correct answer. C. host route There’s no host route in the routing table. Wrong answer. D. floating static route A floating static route is used as a “backup” route to reach a subnet when the “main” route fails. But here the route to the host’s subnet is already in the routing table, and it is working. Wrong answer.

I would have to guess that B is correct, here is why. Remember, when you set up a route, if you can do a route summary. For example, if you have a router connected to a bunch of other routers with 10.1.1.0/24, 10.1.2.0/24, 10.1.3.0/24 and so on, you could just set one route to 10.1.0.0/16, and the router will forward all traffic that is 10.1.X.X /X to that location. Since the route table shows a /25 network that is 10.10.13.X/25 that is the route it goes to. That route is discoverd by OSPF, a network protocol, aka, the answer is a network path. Hope this clears up some confusion. I did some serious study before looking at this, and CCNA is really just trying to screw with us.

The correct answer is B.

The correct answer is B.

The routing table includes a route to 10.10.13.0/25.

Keep on studying guys! This is legit. I saw this on my exam

The Destination IP is included in the learned route 10.10.13.0/25

Correct Answer: B. network route O 10.10.13.0/25 [110/6576] via 10.10.10.1, 06:58:21, FastEthernet0/1: This entry in the routing table indicates that the network 10.10.13.0 with a subnet mask of /25 is reachable via the next hop address 10.10.10.1 using interface FastEthernet0/1. Since 10.10.13.10 falls within the range of 10.10.13.0/25, this route will be used to reach host 10.10.13.10. Type of Route: The type of route used here is an OSPF network route (indicated by the "O" in the routing table entry).

b. Network route

The correct router type configured to reach the internet, as shown in the exhibit, is: A. default route Explanation: A default route is a route that is used to forward packets when the destination network is not explicitly known in the routing table. In this context, the default route would be used to send traffic to the internet, as it's typically represented by the route 0.0.0.0/0, indicating all networks that are not directly connected or otherwise configured. Other options: Network route is used to route traffic to a specific network. Host route is for a specific single host (e.g., /32 route). Floating static route is a static route with a higher administrative distance, used as a backup.

B is the correct answer

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network route is essentially the map that data packets follow across networks, guided by routers and routing protocols, to reach their destination.

B. network route Explanation: R1 uses a network route to reach host 10.10.13.10/32. This can be determined from the routing table entry "10.10.13.0/25 [110/6576] via 10.10.10.1," which indicates that R1 has a route to the network 10.10.13.0/25 that includes the host 10.10.13.10. This is not a default route, host route, or floating static route.

Why is everybody assming the default network mask is /24 to calculate the subnets ip ranges ?

B is right because we need to use dynamic protocol as it displays in the routing table in order to reach 10.10.13.0 /25 network.

B is right because to reach the network: 10.10.13.0 /25 we should use dynamic protocol as OSPF- the shortest and fast protocol to reach the host.