CCNA Chapter #7 Quiz

RIP version 2 will auto summarize routes by default. This means that when RIP version 2 is used, it will automatically summarize networks at their classful boundaries. In this case, the network 192.168.1.32/27 falls within the range of the classful network 192.168.1.0/24. Therefore, when the routing updates are sent, the network 192.168.1.32/27 is not advertised as a separate route.

RIPv1 does not support Variable Length Subnet Masking (VLSM), which means it cannot advertise routes with different subnet masks. In this scenario, both routers are unable to learn routes from each other, indicating that they are unable to exchange routing information due to the lack of VLSM support in RIPv1.

The maximum network diameter permitted by the default metric of RIPv2 is 15 hops. This means that the maximum number of routers that can be traversed in a RIP network before reaching the destination is 15. Beyond this limit, the network is considered unreachable.

The network administrator could use the IP address ranges 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16 on the network. These IP address ranges are defined in RFC 1918 as private IP addresses that can be used within an organization's internal network. The ranges are reserved and not routable on the internet, ensuring that there is no conflict with public IP addresses. Using these IP address ranges allows the company to adhere to the RFC 1918 standard for IP address infrastructure.

RIP v1 and RIP v2 are similar in three ways. Firstly, they both use hop count as a metric, meaning that the number of routers a packet must pass through is used to determine the best route. Secondly, they both have the same metric value for infinite distance, which is 16 hops. Lastly, they both use split horizon to prevent routing loops, where a router does not advertise a route back to the same interface from which it was learned.

By entering "default-information originate" command on Router1, the network administrator is configuring Router1 to propagate the default route to all the routers in the network. This means that if any router in the network receives a packet for a destination that it does not have a specific route for, it will forward the packet to Router1. Router1, being the boundary router, will then forward the packet to the appropriate destination based on its default route. This ensures that all routers in the network have a consistent understanding of the default route and can forward packets accordingly.

The output in the exhibit indicates that the router has not been configured with the "no auto-summary" command. This command is used to disable automatic summarization of routes at classful network boundaries. Since this command has not been configured, it can be concluded that the router is using automatic summarization, which can lead to suboptimal routing and potential connectivity issues.

The command "Router2(config-router)# version 2" allows Router1 to learn about the 192.168.0.0/20 network. This command enables the use of RIP version 2, which supports the advertisement of subnet masks. By using version 2, Router2 can include the subnet mask information for the 192.168.0.0/20 network in its RIP updates, allowing Router1 to learn about the network and its associated subnet mask.

The error is occurring because the network address for Loopback1 overlaps with an already configured interface address. This means that the IP address 192.168.6.62 is already assigned to another interface on the router. To resolve this issue, the technician needs to choose a different IP address that does not conflict with any existing addresses on the router.

RIPv1 is a classful routing protocol, meaning it does not support discontiguous subnets within a major network. In the given configuration, the network 172.16.0.0 is a discontiguous subnet of the major network 172.16.0.0/16. Therefore, RIPv1 will not be able to route to these discontiguous subnets, causing users on the LAN of each router to be unable to access the remote LANs.

RIP version 2 supports VLSM, which allows for more efficient use of IP address space by enabling the use of variable length subnet masks. This means that networks can be divided into smaller subnets, reducing wasted IP addresses. RIP version 2 also supports routing update authentication, which provides a security mechanism to verify the authenticity and integrity of routing updates. This helps prevent unauthorized or malicious routing updates from being accepted and propagated throughout the network.

The command "Router1(config-router)# network 192.168.16.0" will allow Router2 to learn about the 192.168.16.0/28 network. This command enables the routing process on Router1 to include the specified network in its routing table, allowing it to advertise that network to its neighbors, including Router2.

The CHI router will install a route to the 192.168.0.0/16 network in its routing table. This is because the CHI router is configured to advertise the 172.16.0.0/16 network, and the network administrator entered the command "network 192.168.0.0" on the CHI router. This command tells the router to include the 192.168.0.0/16 network in its routing updates and install it in its routing table.

Enabling RIPv2 on the routers would be a possible solution to the problem. RIPv2 is an updated version of RIP that supports classless routing and can advertise subnet masks along with network addresses. By configuring RIPv2 on all routers, including CHI and ORL, they will be able to properly reach the 192.168.1.16/28 network. This will ensure that the subnet mask information is correctly propagated throughout the network, allowing for proper routing.

RFC 1723 added the field "subnet mask" to the RIP message header in order to support Variable Length Subnet Masking (VLSM) and Classless Inter-Domain Routing (CIDR). The subnet mask is used to determine the network portion of an IP address, allowing for more efficient allocation of IP addresses and better utilization of network resources. By including the subnet mask in the RIP message header, routers can accurately determine the network boundaries and make routing decisions accordingly.

Entering the "no version 2" command on the routers will cause the routers to receive both version 1 and version 2 updates, but they will only send out version 1 updates. This means that the routers will still be able to receive routing updates from other routers using both versions, but they will only advertise their own routes using version 1.

The commands shown in the exhibit will cause Router1 to only send version 2 updates to the multicast address 224.0.0.9.

Router1 will install a route to 192.168.0.0/20 because it has a directly connected network with a subnet mask of /20. Router2 will not install a route to 192.168.16.0/20 because it is not directly connected to that network and there is no specific route for it in the routing table.

If a loopback interface with an address of 10.16.1.129/27 is configured on router B, a connected route to the 10.16.1.128/27 network will be added to the routing table of router B. This means that router B will have a direct connection to the 10.16.1.128/27 network and will be able to forward traffic to that network without needing to go through any other routers.

The network command is used to identify which networks will be included in the routing updates. It allows the administrator to specify the network addresses that should be advertised to other routers. Additionally, the network command is used to determine which interfaces can send and receive routing updates. By specifying the network command on specific interfaces, the administrator can control which interfaces participate in the routing process.