CISCO CCNA Exam – Q183

Refer to the exhibit.
CISCO CCNA Exam – Q183

Based on the exhibited routing table, how will packets from a host within the 192.168.10.192/26 LAN be forwarded to 192.168.10.1?

A. The router will forward packets from R3 to R2 to R1.
B. The router will forward packets from R3 to R1 to R2.
C. The router will forward packets from R3 to R2 to R1 AND from R3 to R1.
D. The router will forward packets from R3 to R1.

Correct Answer: C

Explanation:
From the routing table we learn that network 192.168.10.0/30 is learned via 2 equal-cost paths (192.168.10.9 and 192.168.10.5); traffic to this network will be load-balancing.

CISCO CCNA Exam – Q182

Refer to the exhibit.
CISCO CCNA Exam – Q182

C-router is to be used as a “router-on-a-stick” to route between the VLANs. All the interfaces have been properly configured and IP routing is operational. The hosts in the VLANs have been configured with the appropriate default gateway. What is true about this configuration?

A.
These commands need to be added to the configuration:
C-router(config)# router eigrp 123
C-router(config-router)# network 172.19.0.0
B.
These commands need to be added to the configuration:
C-router(config)# router ospf 1
C-router(config-router)# network 172.19.0.0 0.0.3.255 area 0
C.
These commands need to be added to the configuration:
C-router(config)# router rip
C-router(config-router)# network 172.19.0.0
D.
No further routing configuration is required.

Correct Answer: D

Explanation:
Since all the same router (C-router) is the default gateway for all three VLANs, all traffic destined to a different VLA will be sent to the C-router. The C-router will have knowledge of all three networks since they will appear as directly connected in the routing table. Since the C-router already knows how to get to all three networks, no routing protocols need to be configured.

CISCO CCNA Exam – Q181

Refer to the exhibit.
CISCO CCNA Exam – Q181

Why is flash memory erased prior to upgrading the IOS image from the TFTP server?

A. The router cannot verify that the Cisco IOS image currently in flash is valid.
B. Flash memory on Cisco routers can contain only a single IOS image.
C. Erasing current flash content is requested during the copy dialog.
D. In order for the router to use the new image as the default, it must be the only IOS image in flash.

Correct Answer: C

Explanation:
During the copy process, the router asked “Erasing flash before copying? [confirm]” and the administrator confirmed (by pressing Enter) so the flash was deleted.

CISCO CCNA Exam – Q180

Which command would you configure globally on a Cisco router that would allow you to view directly connected Cisco devices?

A. enable cdp
B. cdp enable
C. cdp run
D. run cdp

Correct Answer: C

Explanation:
CDP is enabled on Cisco routers by default. If you prefer not to use the CDP capability, disable it with the no cdp run command. In order to re-enable CDP, use the cdp run command in global configuration mode. The “cdp enable” command is an interface command, not global.

CISCO CCNA Exam – Q179

Refer to the exhibit.
CISCO CCNA Exam – Q179

According to the routing table, where will the router send a packet destined for 10.1.5.65?

A. 10.1.1.2
B. 10.1.2.2
C. 10.1.3.3
D. 10.1.4.4

Correct Answer: C

Explanation:
The destination IP address 10.1.5.65 belongs to 10.1.5.64/28, 10.1.5.64/29 & 10.1.5.64/27 subnets but the “longest prefix match” algorithm will choose the most specific subnet mask; the prefix “/29″ will be chosen to route the packet. Therefore the next-hop should be 10.1.3.3.

CISCO CCNA Exam – Q178

Refer to the exhibit.
CISCO CCNA Exam – Q178

Which address and mask combination represents a summary of the routes learned by EIGRP?

A. 192.168.25.0 255.255.255.240
B. 192.168.25.0 255.255.255.252
C. 192.168.25.16 255.255.255.240
D. 192.168.25.16 255.255.255.252
E. 192.168.25.28 255.255.255.240
F. 192.168.25.28 255.255.255.252

Correct Answer: C

Explanation:
The binary version of 20 is 10100.
The binary version of 16 is 10000.
The binary version of 24 is 11000.
The binary version of 28 is 11100.
The subnet mask is /28. The mask is 255.255.255.240.
Note:
From the output above, EIGRP learned 4 routes and we need to find out the summary of them:
+ 192.168.25.16
+ 192.168.25.20
+ 192.168.25.24
+ 192.168.25.28

The increment should bE. 28 – 16 = 12 but 12 is not an exponentiation of 2 so we must choose 16 (24). Therefore the subnet mask is /28 (=1111 1111.1111 1111.1111
1111.11110000) = 255.255.255.240.
So, the best answer should be 192.168.25.16 255.255.255.240.

CISCO CCNA Exam – Q177

Refer to the exhibit.
CISCO CCNA Exam – Q177

Assuming that the entire network topology is shown, what is the operational status of the interfaces of R2 as indicated by the command output shown?

A. One interface has a problem.
B. Two interfaces have problems.
C. The interfaces are functioning correctly.
D. The operational status of the interfaces cannot be determined from the output shown.

Correct Answer: C

Explanation:
The output shown shows normal operational status of the router’s interfaces. Serial0/0 is down because it has been disabled using the “shutdown” command.

CISCO CCNA Exam – Q176

Which two locations can be configured as a source for the IOS image in the boot system command? (Choose two.)

A. RAM
B. NVRAM
C. flash memory
D. HTTP server
E. TFTP server
F. Telnet server

Correct Answers: C, E

Explanation:
The following locations can be configured as a source for the IOS image:

1. + Flash (the default location)
2. + TFTP server
3. + ROM (used if no other source is found)
4. (Please read the explanation of Question 4 for more information)

CISCO CCNA Exam – Q175

Refer to the exhibit.
CISCO CCNA Exam – Q175

Given the output for this command, if the router ID has not been manually set, what router ID will OSPF use for this router?

A. 10.1.1.2
B. 10.154.154.1
C. 172.16.5.1
D. 192.168.5.3

Correct Answer: C

Explanation:
The highest IP address of all loopback interfaces will be chosen; Loopback 0 will be chosen as the router ID.

CISCO CCNA Exam – Q174

Refer to the exhibit.
CISCO CCNA Exam – Q174

What commands must be configured on the 2950 switch and the router to allow communication between host 1 and host 2? (Choose two.)

A.
Router(config)# interface fastethernet 0/0
Router(config-if)# ip address 192.168.1.1 255.255.255.0
Router(config-if)# no shut down
B.
Router(config)# interface fastethernet 0/0
Router(config-if)# no shut down
Router(config)# interface fastethernet 0/0.1
Router(config-subif)# encapsulation dot1q 10
Router(config-subif)# ip address 192.168.10.1 255.255.255.0
Router(config)# interface fastethernet 0/0.2
Router(config-subif)# encapsulation dot1q 20
Router(config-subif)# ip address 192.168.20.1 255.255.255.0
C.
Router(config)# router eigrp 100
Router(config-router)# network 192.168.10.0
Router(config-router)# network 192.168.20.0
D.
Switch1(config)# vlan database
Switch1(config-vlan)# vtp domain XYZ
Switch1(config-vlan)# vtp server
E.
Switch1(config)# interface fastethernet 0/1
Switch1(config-if)# switchport mode trunk
F.
Switch1(config)# interface vlan 1
Switch1(config-if)# ip default-gateway 192.168.1.1

Correct Answers: B, E

Explanation:
The router will need to use subinterfaces, where each subinterface is assigned a VLAN and IP address for each VLAN. On the switch, the connection to the router need to be configured as a trunk using the switchport mode trunk command and it will need a default gateway for VLAN 1.