Routing and Switching Essentials Version 6 – RSE 6.0 Chapter 2 Exam

Routing and Switching Essentials (Version 6.00) – RSE 6.0 Chapter 2 Exam

QUESTION 1

Which parameter or parameters are used to calculate OSPF cost in Cisco routers?

A.Bandwidth
B.Bandwidth and Delay
C.Bandwidth, Delay, and MTU
D.Bandwidth, MTU, Reliability, Delay, and Load

Correct Answer: A
Section: (none)
Explanation

Explanation/Reference:
Explanation:
The well-known formula to calculate OSPF cost is Cost = 108 / Bandwidth

QUESTION 2

Why do large OSPF networks use a hierarchical design? (Choose three.)

A.to decrease latency by increasing bandwidth
B.to reduce routing overhead
C.to speed up convergence
D.to confine network instability to single areas of the network
E.to reduce the complexity of router configuration
F. to lower costs by replacing routers with distribution layer switches

Correct Answer: BCD
Section: (none)
Explanation

Explanation/Reference:
Explanation:
OSPF implements a two-tier hierarchical routing model that uses a core or backbone tier known as area
zero (0). Attached to that backbone via area border routers (ABRs) are a number of secondary tier areas.
The hierarchical approach is used to achieve the following:
Rapid convergence because of link and/or switch failures
Deterministic traffic recovery
Scalable and manageable routing hierarchy, reduced routing overhead.

QUESTION 3

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QUESTION 4

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QUESTION 5

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QUESTION 6

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QUESTION 7

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QUESTION 8

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QUESTION 9

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QUESTION 10

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QUESTION 11

Drag and Drop Question

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QUESTION 12

Lab Simulation Question – ACL-1
A network associate is adding security to the configuration of the Corp1 router. The user on host C should
be able to use a web browser to access financial information from the Finance Web Server. No other hosts
from the LAN nor the Core should be able to use a web browser to access this server. Since there are
multiple resources for the corporation at this location including other resources on the Finance Web Server,
all other traffic should be allowed. The task is to create and apply an access-list with no more than three
statements that will allow ONLY host C web access to the Finance Web Server. No other hosts will have
web access to the Finance Web Server. All other traffic is permitted.
Access to the router CLI can be gained by clicking on the appropriate host.
All passwords have been temporarily set to “cisco”.
The Core connection uses an IP address of 198.18.196.65
The computers in the Hosts LAN have been assigned addresses of 192.168.33.1 – 192.168.33.254
Host A 192.168.33.1
Host B 192.168.33.2
Host C 192.168.33.3
Host D 192.168.33.4
The servers in the Server LAN have been assigned addresses of 172.22.242.17 – 172.22.242.30 The
Finance Web Server is assigned an IP address of 172.22.242.23.

A.
B.
C.
D.

Correct Answer:
Section: (none)
Explanation
Explanation/Reference:
Corp1>enable
Password: cisco
We should create an access-list and apply it to the interface which is connected to the Servers LAN
interface, because it can filter out traffic from both Sw-Hosts and Core networks. The Server 172.22.242.30
so we can guess
LAN network has been assigned addresses of 172.22.242.17
the interface connected to them has an IP address of 172.22.242.30 (.30 is the number shown in the
figure). Use the “show ip interface brief” command to check which interface has the IP address of
172.22.242.30.
Corp1#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 192.168.33.254 YES manual up up
FastEthernet0/1 172.22.242.30 YES manual up up
Serial0/0 198.18.196.65 YES manual up up
We learn that interface FastEthernet0/1 is the interface connected to Server LAN network. It is the interface
we will apply our access-list (for outbound direction).
Corp1#configure terminal
192.168.33.3 to the Finance Web Server 172.22.242.23
Our access-list needs to allow host C
via web (port 80)
Corp1(config)#access-list 100 permit tcp host 192.168.33.3 host 172.22.242.23 eq 80
Deny other hosts access to the Finance Web Server via web
Corp1(config)#access-list 100 deny tcp any host 172.22.242.23 eq 80
All other traffic is permitted
Corp1(config)#access-list 100 permit ip any any
Apply this access-list to Fa0/1 interface (outbound direction)

Corp1(config)#interface fa0/1
Corp1(config-if)#ip access-group 100 out
Notice: We have to apply the access-list to Fa0/1 interface (not Fa0/0 interface) so that the access-list can
filter traffic coming from both the LAN and the Core networks. If we apply access list to the inbound
interface we can only filter traffic from the LAN network. In the real exam, just click on host C and open its
web browser. In the address box type http://172.22.242.23 to check if you are allowed to access Finance
Web Server or not. If your configuration is correct then you can access it.
Click on other hosts (A, B and D) and check to make sure you can’t access Finance Web Server from these
hosts.
Finally, save the configuration
Corp1(config-if)#end
Corp1#copy running-config startup-config
This configuration only prevents hosts from accessing Finance Web Server via web but if this like FTP,
SMTP… then other hosts can access it, too.
server supports other traffic
Notice: In the real exam, you might be asked to allow other host (A, B or D) to access the Finance Web
Server so please read the requirement carefully.
Modification #1
A network associate is adding security to the configuration of the Corp router. The user on host B should be
able to access the Finance Web Server. Host B should be denied to access other server on S1-SRVS
network. Since there are multiple resources for the corporation at this location including other resources on
the Finance Web Server, all other traffic should be allowed. The task is to create and apply a numbered
access-list with no more than three statements that
will allow ONLY host B access to the Finance Web Server. Deny host B from accessing the other servers.
All other traffic is permitted.
access-list 100 permit ip host 192.168.33.2 host 172.22.242.23 access-list 100 deny ip host 192.168.33.2
172.22.242.16 0.0.0.15 access-list 100 permit ip any any
Modification #2
A network associate is adding security to the configuration of the Corp1 router. The user on host C should
be able to access the Finance Web Server. No other hosts from the LAN nor the Core should be able
access this server. All other traffic should be allowed. The task is to create and apply a numbered accesslist with no more than three statements that will allow ONLY host C access the Finance Web Server. No
other hosts will have access to the Finance Web Server. All other traffic is permitted.
access-list 100 permit ip host 192.168.33.3 host 172.22.242.23 access-list 100 deny ip any host
172.22.242.23
access-list 100 permit ip any any
Modification #3
A network associate is adding security to the configuration of the Corp1 router. The user on host C should
be able to use a web browser to access financial information from the Finance Web Server. Other access
from host C to Finance Web Server should be denied. No other hosts from the LAN nor the Core should be
able to access the Finance Web Server. All other traffic should be allowed.
The task is to create and apply a numbered access-list with no more than three statements that will allow
ONLY host C web access to the Finance Web Server. Also host C should be denied to access any other
services of Finance Web Server. No other hosts will access to the Finance Web Server. All other traffic is
permitted.

access-list 100 permit tcp host 192.168.33.3 host 172.22.242.23 eq 80
access-list 100 deny ip any host 172.22.242.23
access-list 100 permit ip any any
Modification #4
A network associate is adding security to the configuration of the Corp1 router. The user on host D should
be able to use a web browser to access financial information from the Finance Web Server. Other access
from host C to Finance Web Server should be denied. No other hosts from the LAN nor the Core should be
able to access the Finance Web Server. All hosts from the LAN nor the Core should able to access public
web server.
The task is to create and apply a numbered access-list with no more than three statements that will allow
ONLY host D should be able to use a web browser(HTTP)to access the Finance Web Server. Other types
of access from host D to the Finance Web Server should be blocked. All access from hosts in the Core or
local LAN to the Finance Web Server should be blocked. All hosts in the Core and local LAN should be able
to access the Public Web Server.
access-list 100 permit tcp host 192.168.33.3 host 172.22.242.23 eq 80 access-list 100 deny ip any host
172.22.242.23
access-list 100 permit ip any any

QUESTION 13

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QUESTION 14

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QUESTION 15

Drag and Drop Question

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Correct Answer:
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