CCNA Security Final v1.2

16. Which statement describes the characteristics of packet-filtering and stateful firewalls as they relate to the OSI model?

A packet-filtering firewall uses session layer information to track the state of a connection, whereas a stateful firewall uses application layer information to track the state of a connection.

17. What is a difference between ASA IPv4 ACLs and IOS IPv4 ACLs?

ASA ACLs use the subnet mask in defining a network, whereas IOS ACLs use the wildcard mask.

13. What is the main difference between the implementation of IDS and IPS devices?

An IDS would allow malicious traffic to pass before it is addressed, whereas an IPS stops it immediately.

45. Which spanning-tree enhancement prevents the spanning-tree topology from changing by blocking a port that receives a superior BPDU?

BPDU guard

44. Refer to the exhibit. A network administrator is troubleshooting a GRE VPN tunnel between R1 and R2. Assuming the R2 GRE configuration is correct and based on the running configuration of R1, what must the administrator do to fix the problem?

Change the tunnel destination to 209.165.200.225.

11. What is a type of SSL VPN that provides access to a network without requiring VPN software or a Java applet on the client?

Cisco VPN client mode

24. Which algorithm is used to automatically generate a shared secret for two systems to use in establishing an IPsec VPN?

DH

18. What is the best way to prevent a VLAN hopping attack?

Disable trunk negotiation for trunk ports and statically set nontrunk ports as access ports.

10. Refer to the exhibit. Which interface configuration completes the classic firewall configuration on the firewall?

FW(config)# interface g0/1 FW(config-if)# ip inspect OUTBOUND in FW(config-if)# ip access-group INSIDE in

22. How would a network security professional mitigate a DoS attack?

Include a firewall and IPS in the network security design.

20. Refer to the exhibit. What is the purpose of the object group-based ACL?

It allows users on the 10.5.0.0/24 network access via HTTPS to remote devices on the 10.7.150.0/28, 10.7.151.0/28, 10.7.160.0/28, and 10.7.161.0/28 networks.

52. Refer to the exhibit. What is the purpose of the highlighted inspect line?

It dictates to the firewall to track all outgoing sessions no matter the source in order to determine whether a return packet is allowed.

43. What are two features of Cisco Easy VPN Server? (Choose two.)

It enables complete access to the corporate network over an SSL VPN tunnel.

5. What are two benefits of an SSL VPN? (Choose two.)

It is compatible with DMVPNs, Cisco IOS Firewall, IPsec, IPS, Cisco Easy VPN, and NAT. It has the option of only requiring an SSL-enabled web browser.

29. What is one benefit of implementing a secure email service by using the Cisco Email Security Appliance (ESA)?

It obtains real-time updates from the Cisco SIO.

1. Which statement is true about the One-Step lockdown feature of the CCP Security Audit wizard?

It sets an access class ACL on VTY lines.

41. What are two characteristics of an acceptable use policy? (Choose two.)

It should specify who is authorized to access network resources. It should identify what network applications and usages are acceptable.

3. What are two disadvantages of using network IPS? (Choose two.)

Network IPS is incapable of examining encrypted traffic. Network IPS has a difficult time reconstructing fragmented traffic to determine if an attack was successful.

42. Refer to the exhibit. Which pair of crypto isakmp key commands would correctly configure PSK on the two routers?

R1# crypto isakmp key ciscopass address 209.165.200.227 R2# crypto isakmp key ciscopass address 209.165.200.226

2. With the Cisco AnyConnect VPN wizard, which two protocols can be used for tunnel group configuration? (Choose two.)

SSH IPsec

9. What is an advantage of using SSL VPNs compared to IPsec VPNs on an ASA?

SSL VPNs do not require any pre-installed client software.

6. When configuring router security, which statement describes the most effective way to use ACLs to control Telnet traffic that is destined to the router itself?

The ACL should be applied to all vty lines in the in direction to prevent an unwanted user from connecting to an unsecured port.

7. Refer to the exhibit. A network administrator is configuring the security level for the ASA. Which statement describes the default result if the administrator tries to assign the Inside interface with the same security level as the DMZ interface?

The ASA allows traffic from the Inside to the DMZ, but blocks traffic initiated on the DMZ to the Inside interface.

21. Refer to the exhibit. Based on the output from the show secure bootset command on router R1, which three conclusions can be drawn about Cisco IOS Resilience? (Choose three.)

The Cisco IOS image file is hidden and cannot be copied, modified, or deleted. A copy of the router configuration file has been made. The secure boot-config command was issued on R1.

12. What are two reasons for a company to migrate from a classic firewall to the ZPF model? (Choose two.)

The classic firewall will perform the same inspection on all traffic that goes through a specific interface. The classic firewall relies heavily on ACLs.

35. What is the basic method used by 3DES to encrypt plaintext?

The data is encrypted, decrypted, and encrypted using three different keys.

36. Refer to the exhibit. A network administrator configures AAA authentication on R1. The administrator then tests the configuration by telneting to R1. The ACS servers are configured and running. What will happen if the authentication fails?

The enable secret password could be used in the next login attempt.

30. Refer to the exhibit. The administrator can ping the S0/0/1 interface of RouterB but is unable to gain Telnet access to the router by using the password cisco123. What is a possible cause of the problem?

The password cisco123 is wrong.

23. Which three statements describe limitations in using privilege levels for assigning command authorization? (Choose three.)

There is no access control to specific interfaces on a router. Creating a user account that needs access to most but not all commands can be a tedious process. Commands set on a higher privilege level are not available for lower privilege users.

34. Refer to the exhibit. An administrator is examining the message in a syslog server. What can be determined from the message?

This is a notification message for a normal but significant condition.

40. What question is answered by the risk analysis component of security policy development?

What is the cost versus benefit analysis of implementing various security technologies?

47. Why does a worm pose a greater threat than a virus poses?

Worms are more network-based than viruses are.

27. What will be disabled as a result of the no service password-recovery command?

ability to access ROMMON

46. In deploying an IPS in a corporate network, system operators first create a profile of normal network operation by monitoring network activities in normal network uses. After the profile is incorporated into the IPS triggering mechanism, alarms will be generated when the IPS detects excessive activity that is beyond the scope of the profile. Which signature detection mechanism is deployed?

anomaly-based detection

50. A network technician has been asked to design a virtual private network between two branch routers. Which type of cryptographic key should be used in this scenario?

asymmetric key

8. A network technician is configuring SNMPv3 and has set a security level of auth. What is the effect of this setting?

authenticates a packet by using either the HMAC with MD5 method or the SHA method

51. A company is designing its strategy of deploying Cisco Secure ACS to manage user access. The company is currently using a Windows server for the internal authentication service. The network administrator needs to configure the ACS to contact the Windows server when it cannot find the user in its local database. Which option of external user database setup should be configured on ACS?

by user priority

4. Refer to the exhibit. An administrator is implementing VPN support on an ASA 5505. What type of VPN support is being implemented?

clientless SSL VPN

15. What method is used to authenticate SNMPv2 messages between the manager and the agent?

community strings

32. Which STP port type is permitted to forward traffic, but is not the port closest to the root bridge?

designated port alternate port

28. In what two phases of the system development life cycle does risk assessment take place? (Choose two.)

initiation acquisition and development

48. Which security feature would be commonly implemented as part of a large enterprise wireless policy but would not typically be used in a small office/home office network?

not allowing personal wireless devices

49. Which two commands are needed on every IPv6 ACL to allow IPv6 neighbor discovery? (Choose two.)

permit icmp any any nd-ns permit icmp any any nd-na

39. Which security policy component would contain procedures for handling an issue where someone followed a network administrator into the server room without the administrator noticing and the person removed some storage drives?

security policy

25. What type of security key is generated by the local user software when a user is connecting to a Cisco ASA through a remote-access SSL VPN?

shared-secret key

37. Which two security features can cause a switch port to become error-disabled? (Choose two.)

storm control with the trap option PortFast with BPDU guard enabled port security with the shutdown violation mode

31. A network administrator configures the alert generation of an IPS device in such a way that when multiple attack packets that match the same signature are detected, a single alert for the first packet is generated and the remaining duplicate alarms are counted, but not sent, for a specific time period. When the specified time period is reached, an alert is sent that indicates the number of alarms that occurred during the time interval. What kind of alert generation pattern is configured?

summary alerts

26. What is one advantage of using a Cisco ASA for remote networking VPN deployment compared to a Cisco ISR?

support for IPsec VPNs

14. What information must an IPS track in order to detect attacks matching a composite signature?

the total number of packets in the attack

33. Refer to the exhibit. What is the purpose of the ACLs?

to allow SSH connections initiated from the Internet to enter the network

38. What are three goals of a port scan attack? (Choose three.)

to determine potential vulnerabilities to identify active services

19. Why have corporations been shifting remote access security policies to include support for ASA SSL VPNs?

to support secure access for users on a multitude of devices