QUESTION 1 Which of the following factors determines the OSPF router ID when configuring a router with both physical and logical interfaces?

A. The lowest network number of any interface.

B. The highest network number of any interface.

C. The highest IP address of any logical interface.

D. The middle IP address of any logical interface.

E. The lowest IP address of any physical interface.

F. The highest IP address of any physical interface.

G. The lowest IP address of any logical interface. Answer: F Explanation: The OSPF topology database includes information about routers and the subnets, or links, to which they are attached. To identify the routers in the neighbor table's topology database, OSPF uses a router ID (RID) for each router. A router's OSPF RID is that router's highest IP address on a physical interface when OSPF starts running. Note: The OSPF router ID is a 32-bit IP address selected at the beginning of the OSPF process. The highest IP address configured on the router is the router ID. If a loopback address is configured, then it is the router ID. In case of multiple loopback addresses, the highest loopback address is the router ID. Once the router ID is elected it doesn't change unless the IP address is removed or OSPF restarts. Reference: CCNA Self-Study CCNA ICND exam certification Guide (Cisco press, ISBN 1-58720-083-X) Page 208

QUESTION 2 Which of the following routes will be used to forward data in a situation where a routing table contains static, RIP, and IGRP routes destined to the same network with each set to its default administrative distance?

A. The RIP route

B. The static route

C. The IGRP route

D. All three will load balance. Answer: B Explanation: To decide which route to use, IOS uses a concept called Administrative Distance. Administrative distance is a number that denotes how believable an entire routing protocol is on a single router. The lower the number, the better, or more believable the routing protocol. Route Type Administrative Distance

• Static 1
• IGRP 100
• RIP 120 Reference: CCNA Self-Study CCNA ICND exam certification Guide (Cisco press, ISBN 1-58720-083-X) Page 177
  
QUESTION 3 You are a Cisco certified expert. You have been contracted by the Cisco Sources Pro chain to fix a problem that was caused by a MCP certified technician who could not complete the configuration of the routers. This Cisco Sources Pro chain has three stores and wanted to maintain their bicycle repair business in a centralized manner through network connectivity. They then asked the local MCP certified technician to configure the routers, but the technician failed to establish connectivity among the routers. The routers are named Cisco Sources1, Cisco Sources2, and Cisco Sources3, respectively. Identify the faults(s) and make the appropriate change(s) to rectify the configuration of the routers. The MCP technician configured the routers with the specification that follows:

• The routers are named Cisco Sources1, Cisco Sources2, and Cisco Sources3.
• RIP is the routing protocol
• Clocking is provided on the serial 0 interfaces
• The password on each router is "Cisco Sources"
• The subnet mask on all interfaces is the default mask.
• The IP addresses are listed in chart below. Cisco Sources1 E0 192.168.27.1 E1 192.168.29.1 S0 192.168.31.1 Secret password: Cisco Sources Cisco Sources2 E0 192.168.35.1 S0 192.168.33.1 S1 192.168.31.2 Secret password: Cisco Sources Cisco Sources3 E0 192.168.37.1 S1 192.168.33.2 Secret password: Cisco Sources

To configure the router you need to click on the host icon that is connected to the router by a serial cable. Answer:

Click on Host 2: Router Cisco Sources1: Cisco Sources1> enable Password: Cisco Sources Cisco Sources1 # config terminal Cisco Sources1 (config) # interface ethernet 0 Cisco Sources1 (config-if) # ip address 192.168.27.1 255.255.255.0 Cisco Sources1 (config-if) # no shutdown Cisco Sources1 (config-if) # exit Cisco Sources1 (config) # interface ethernet 1 Cisco Sources1 (config-if) # ip address 192.168.29.1 255.255.255.0 Cisco Sources1 (config-if) # no shutdown Cisco Sources1 (config-if) # exit Cisco Sources1 (config) # interface serial 0 Cisco Sources1 (config-if) # ip address 192.168.31.1 255.255.255.0 Cisco Sources3 (config-if) # clock rate 64000 Cisco Sources1 (config-if) # no shutdown Cisco Sources1 (config-if) # exit Cisco Sources1 (config) # router rip Cisco Sources1 (config-router) # network 192.168.27.0 Cisco Sources1 (config-router) # network 192.168.29.0 Cisco Sources1 (config-router) # network 192.168-31.0 Cisco Sources1 (config-router) # Ctrl-Z Cisco Sources1 # copy running-config startup-config Click on Host 4 Router Cisco Sources2: Cisco Sources2> enable Password: Cisco Sources Cisco Sources2 # config t Cisco Sources2 (config) # interface ethernet 0 Cisco Sources2 (config-if) # ip address 192.168.35.1 255.255.255.0 Cisco Sources2 (config-if) # no shutdown Cisco Sources2 (config-if) # exit Cisco Sources2 (config) # interface serial 0 Cisco Sources2 (config-if) # ip address 192.168.33.1 255.255.255.0 Cisco Sources2 (config-if) # clock rate 64000 Cisco Sources2 (config-if) # no shutdown Cisco Sources2 (config-if) # exit Cisco Sources2 (config) # interface serial 1 Cisco Sources2 (config-if) # ip address 192.168.31.2 255.255.255.0 Cisco Sources2 (config-if) # no shutdown Cisco Sources2 (config-if) # exit Cisco Sources2 (config) # router rip Cisco Sources2 (config-router) # network 192.168.35.0 Cisco Sources2 (config-router) # network 192.168.33.0 Cisco Sources2 (config-router) # network 192.168.31.0

Cisco Sources2 (config-router) # Ctrl-Z Cisco Sources2 # copy running-config startup-config Router Cisco Sources3: Click on Host6 Cisco Sources3> enable Password: Cisco Sources Cisco Sources3 # config t Cisco Sources3 (config) # interface ethernet 0 Cisco Sources3 (config-if) # ip address 192.168.37.1 255.255.255.0 Cisco Sources3 (config-if) # no shutdown Cisco Sources3 (config-if) # exit Cisco Sources3 (config) # interface serial 1 Cisco Sources3 (config-if) # ip address 192.168.33.2 255.255.255.0 Cisco Sources3 (config-if) # no shutdown Cisco Sources3 (config-if) # exit Cisco Sources3 (config) # router rip Cisco Sources3 (config-router) # network 192.168.33.0 Cisco Sources3 (config-router) # network 192.168.37.0 Cisco Sources3 (config-router) # Ctrl-Z Cisco Sources3 # copy running-config startup-config

QUESTION 4 The following exhibit shows the Cisco Sources.com WAN. Study it carefully:

What are the broadcast addresses of the subnets in the Cisco Sources network? (Select three options.)

You want to prevent users on the Research Network and the Internet from accessing the Cisco Sources Support server, but you want to allow all other Cisco Sources users access to the server. You create an access control list (ACL) called research block. The ACL contains the following statements: deny 172.16.102.0 0.0.0.255 172.16.104.255 0.0.0.0 permit 172.16.0.0 0.0.255.255 172.16.104.252 0.0.0.0 Which of the following command sequence must be issued so that the list meets these requirements?

A. Cisco Sources1(config)# interface e0 Cisco Sources1(config-if)# ip access-group research_block in

B. Cisco Sources2(config)# interface s1 Cisco Sources2(config-if)# ip access-group research_block in

C. Cisco Sources3(config)# interface s1 Cisco Sources3(config-if)# ip access-group research_block in

D. Cisco Sources1(config)# interface s0 Cisco Sources1(config-if)# ip access-group research_block out

E. Cisco Sources2(config)# interface s0 Cisco Sources2(config-if)# ip access-group research_block out

F. Cisco Sources3(config)# interface e0 Cisco Sources3(config-if)# ip access-group research_block out Answer: F Explanation: To enable the ACL on an interface and define the direction of packets to which the ACL is applied, the ip access-group command is used. When referring to a router, these terms have the following meanings.

• Out - Traffic that has already been through the router and is leaving the interface; the source would be where it's been (on the other side of the router) and the destination is where it's going.
• In - Traffic that is arriving on the interface and which will go through the router; the source would be where it's been and the destination is where it's going (on the other side of the router). Reference: CCNA Self-Study CCNA ICND exam certification Guide (Cisco press, ISBN 1-58720-083-X) Page 433 http://www.cisco.com/en/US/products/sw/secursw/ps1018/products_tech_note09186a00800a5b9a.shtml

QUESTION 7 You are a network administrator at Cisco Sources. You are troubleshooting a router problem. You issue the show ip route command on one of the routers. The output from the command is shown in the following exhibit: What does [120/3] represent?

A. 120 is the bandwidth allocation and 3 is the routing process number.

B. 120 is the administrative distance and 3 is the metric for that route.

C. 120 is the value of the update timer and 3 is the number of updates received.

D. 120 is the UDP port for forwarding traffic and 3 is the number of bridges. Answer: B Explanation: To decide which route to use, IOS uses a concept called Administrative Distance. Administrative distance is a number that denotes how believable an entire routing protocol is on a single router. The lower the number, the better, or more believable the routing protocol. Route Type Administrative Distance

• Connected 0
• IGRP 100
• RIP 120 Reference: CCNA Self-Study CCNA ICND exam certification Guide (Cisco press, ISBN 1-58720-083-X) Page 177

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