Cisco Router Password Encryption


OBJECT: Simulation of CISCO Password Encryption.
REQUIRED SOFTWARE: Cisco Packet Tracer 8.1.1

Network Diagram

Setup this network:

Cisco Router Password Encryption
Router#configure terminal 
Router(config)#hostname R1
R1(config)#enable password cisco
R1(config)#enable secret gynacs
R1(config)#line console 0
R1(config-line)#login local
R1(config-line)#username gyancs password cs123
R1(config-line)#line aux 0
R1(config-line)#password aux


Enable Password :-

➤enable password We are asked when we enter user exec mode (router>) from privilege mode (router #) in the router’s command line.

➤enable password can be given in two ways

➤ enable password – After configuring the password with this command, the password is stored in the plain-text in the router’s memory.

➤ enable secret – On configuring the password with this command, the store is stored in the encrypted format in the memory of the password router.

To construct a Wireless LAN and make the PC’s communicate wirelessly
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1. Which OSI Reference Layer is concerned with path determination?

Answer is A)

2. What is the default LMI type for Cisco Routers that are using Frame-Relay?

Answer is C)

3. The Internet Control Message Protocol occurs at what layer of the seven layer model?

Answer is B)

4. Which protocol resolves an IP address to a MAC address?

Answer is C)

5. In regards to the ISDN BRI standard, which channel is used for control?

Answer is D)

6. On an ISDN BRI interface, the control channel is the ‘D’ channel. What is the rate of this channel?

Answer is B)
16 Kbps

7. What is the administrative distance for IGRP?

Answer is A)

8. The benefits to segmenting with Bridges are which of the following?

Answer is D)
Datagram filtering

9. Bridges work at what layer of the OSI model?

Answer is B)
Data link

10. What is the default switching method for the Cisco 5000 series?

Answer is C)

11. You have two Cisco routers setup back-to-back in a lab using DTE/DCE cables. To which router would you add the clockrate command?

Answer is D)
The serial port on the DCE router

12. What is the protocol number for UDP?

Answer is A)

13. Which layer is responsible for coordinating communication between systems?

Answer is A)

14. Which protocol will send a message to routers if a network outage or congestion occurs?

Answer is B)

15. When would you use ISDN?

Answer is B)
To support applications requiring voice, data, and video

16. Which layer defines bit synchronization?

Answer is D)

17. Which layer is responsible for synchronizing sending and receiving applications?

Answer is A)

18. Which protocol is used for booting diskless workstations?

Answer is B)

19. What does a router do with a packet that it does not have a destination network for?

Answer is C)
Drops the packet

20. What is the default interval for SAP updates?

Answer is B)
60 seconds

21. Which command will display the CHAP authentication process as it occurs between two routers in the network?

Answer is A)
debug ppp authentication

22. Which command is required for connectivity in a Frame Relay network if Inverse ARP is not operational?

Answer is C)
frame-relay map

23. Suppose that you have a customer who has a central HQ and six branch offices. They anticipate adding six more branches in the near future. They wish to implement a WAN technology that will allow the branches to economically connect to HQ and you have no free ports on the HQ router. Which of the following would you recommend?

Answer is D)
Frame Relay

24. How should a router that is being used in a Frame Relay network be configured to keep split horizon issues from preventing routing updates?

Answer is B)
Configure a separate subinterface for each PVC with a unique DLCI and subnet assigned to the subinterface.

25. You need to configure a router for a Frame Relay connection to a non-Cisco router. Which of the following commands will prepare the WAN interface of the router for this connection?

Answer is D)
Router(config-if)#encapsulation frame-relay ietf

26. The Acme Corporation is implementing dial-up services to enable remote-office employees to connect to the local network. The company uses multiple routed protocols, needs authentication of users connecting to the network, and since some calls will be long distance, needs callback support. Which of the following protocols is the best choice for these remote services?

Answer is A)

27. Which WAN encapsulations can be configured on an asynchronous serial connection?

Answer is C)

28. Which of the following uses ATM as the Data Link layer protocol that’s terminated at what’s known as the DSLAM?

Answer is C)

29. What two statements about IPv4 and IPv6 addresses are true?

Answer is B)
An IPv4 address is 32 bits long, represented in decimal.

30. Which WAN encapsulations can be configured on an asynchronous serial connection?

Answer is C)
Router1(config-if)# ipv6 ospf 10 area