Here you have the best Cisco 300-101 practice exam questions
Refer to the exhibit.
Which one statement is true?
The network statement on Router B includes only 172.16.0.0/16 and 192.168.5.0/24 networks. The 10.0.0.0/8 network is not included in Router B's EIGRP configuration. Since Router B does not have a network statement for 10.0.0.0/8, it will not form an EIGRP adjacency for that network, and consequently, routes for the 10.0.0.0/8 network will not be included in Router B's routing table.
An engineer has configured a router to use EUI-64, and was asked to document the IPv6 address of the router. The router has the following interface parameters: mac address 2201.420A.0004 subnet 2001:DB8:0:1::/64
Which IPv6 addresses should the engineer add to the documentation?
A
Extended Unique Identifier (EUI), as per RFC2373, allows a host to assign iteslf a unique 64-Bit IP Version 6 interface identifier (EUI-64). This feature is a key benefit over IPv4 as it eliminates the need of manual configuration or DHCP as in the world of IPv4. The IPv6 EUI-64 format address is obtained through the 48-bit
MAC address. The Mac address is first separated into two 24-bits, with one being OUI (Organizationally Unique Identifier) and the other being NIC specific. The
16-bit 0xFFFE is then inserted between these two 24-bits to for the 64-bit EUI address. IEEE has chosen FFFE as a reserved value which can only appear in EUI-
64 generated from the EUI-48 MAC address.
Here is an example showing how the Mac Address is used to generate EUI.
Next, the seventh bit from the left, or the universal/local (U/L) bit, needs to be inverted. This bit identifies whether this interface identifier is universally or locally administered. If 0, the address is locally administered and if 1, the address is globally unique. It is worth noticing that in the OUI portion, the globally unique addresses assigned by the IEEE has always been set to 0 whereas the locally created addresses has 1 configured. Therefore, when the bit is inverted, it maintains its original scope (global unique address is still global unique and vice versa). The reason for inverting can be found in RFC4291 section 2.5.1.
Reference:
https://supportforums.cisco.com/document/100566/understanding-ipv6-eui-64-bit-address
SIMULATION -
Route.com is a small IT corporation that is attempting to implement the network shown in the exhibit. Currently the implementation is partially completed. OSPF has been configured on routers
Chicago and NewYork. The SO/O interface on Chicago and the SO/1 interface on NewYork are in
Area 0. The loopbackO interface on NewYork is in Area 1. However, they cannot ping from the serial interface of the Seattle router to the loopback interface of the NewYork router. You have been asked to complete the implementation to allow this ping.
ROUTE.com's corporate implementation guidelines require:
"¢ The OSPF process ID for all routers must be 10.
"¢ The routing protocol for each interface must be enabled under the routing process.
"¢ The routing protocol must be enabled for each interface using the most specific wildcard mask possible.
"¢ The serial link between Seattle and Chicago must be in OSPF area 21.
"¢ OSPF area 21 must not receive any inter-area or external routes.
Network Information -
Seattle -
S0/0 192.168.16.5/30 "" Link between Seattle and Chicago
Secret Password: cisco -
Chicago -
S0/0 192.168.54.9/30 "" Link between Chicago and New York
S0/1 192.168.16.6/30 "" Link between Seattle and Chicago
Secret Password: cisco -
New York -
S0/1 192.168.54.10/30 "" Link between Chicago and New York
Loopback0 172.16.189.189 -
Secret Password: cisco -
See explanation below -
Explanation
Note: In actual exam, the IP addressing, OSPF areas and process ID, and router hostnames may change, but the overall solution is the same.
Seattle's S0/0 IP Address is 192.168.16.5/30. So, we need to find the network address and wildcard mask of 192.168.16.5/30 in order to configure the OSPF.
IP Address: 192.168.16.5 /30 -
Subnet Mask: 255.255.255.252 -
Here subtract 252 from 2565, 256-252 = 4, hence the subnets will increment by 4.
First, find the 4thoctet of the Network Address:
The 4thoctet of IP address (192.168.16.5) belongs to subnet 1 (4 to 7).
Network Address: 192.168.16.4 -
Broadcast Address: 192.168.16.7 -
Let's find the wildcard mask of /30.
Subnet Mask: (Network Bits "" 1's, Host Bits "" 0's)
Let's find the wildcard mask of /30:
Now we configure OSPF using process ID 10 (note the process ID may change to something else in real exam).
Seattle>enable -
Password:
Seattle#conf t -
Seattle(config)#router ospf 10 -
Seattle(config-router)#network 192.168.16.4 0.0.0.3 area 21
One of the tasks states that area 21 should not receive any external or inter-area routes (except the default route).
Seattle(config-router)#area 21 stub
Seattle(config-router)#end -
Seattle#copy run start -
Chicago Configuration:
Chicago>enable -
Password: cisco -
Chicago#conf t -
Chicago(config)#router ospf10 -
We need to add Chicago's S0/1 interface to Area 21
Chicago(config-router)#network 192.168.16.4 0.0.0.3 area 21
Again, area 21 should not receive any external or inter-area routes (except the default route).
In order to accomplish this, we must stop LSA Type 5 if we don't want to send external routes. And if we don't want to send inter-area routes, we have to stop LSA
Type 3 and Type 4. There fore we want to configure area 21 as a totally stubby area.
Chicago(config-router)#area 21 stub no-summary
Chicago(config-router)#end -
Chicago#copy run start -
The other interface on the Chicago router is already configured correctly in this scenario, as well as the New York router so there is nothing that needs to be done on that router.
Scenario -
You have been asked to evaluate how EIGRP is functioning in a customer network. Access the device consoles to answer the questions.
Instructions -
- Enter IOS commands on the device to verify network operation and answer for multiple-choice questions.
- THIS TASK DOES NOT REQUIRE DEVICE CONFIGURATION.
- Click on the individual device icons or use the tab at the bottom of the screen to gain access to the console for each device.
- No console or enable passwords are required.
- To access the multiple-choice questions, click on the numbered boxes on the left of the top panel.
- There are five multiple-choice questions with this task. Be sure to answer all five questions before selecting the Next button.
What percent of R1's interfaces bandwidth is EIGRP allowed to use?
B
Scenario -
You have been asked to evaluate an OSPF network setup in a test lab and to answer questions a customer has about its operation. The customer has disabled your access to the show running-config command.
Instructions -
- Enter IOS commands on the device to verify network operation and answer for multiple-choice questions.
- THIS TASK DOES NOT REQUIRE DEVICE CONFIGURATION.
- Click on the icon or the lab at the bottom of the screen to gain access to the console for each device.
- No console or enable passwords are required.
- To access the multiple-choice questions, click on the numbered boxes on the left of the top panel.
- There are four multiple-choice questions with this task. Be sure to answer all four questions before selecting the Next button.
How old is the Type 4 LSA from Router 3 for area 1 on the router R5, based on the output you have examined?
A
Part of the "show ip ospf topology" command on R5 shows this:
The Link ID of R3 (3.3.3.3) shows the age is 1858.