CCNASecurityChap2答案

Which three services on a router does Cisco SDM One-Step Lockdown enable? (Choose three.)

SNMP

TCP intercepts

SSH access to the router

Cisco Discovery Protocol

password encryption service

firewall on all outside interfaces

Which statement describes the operation of the Cisco SDM Security Audit wizard?

The wizard configures a router to prevent unauthorized access.

The wizard compares a router configuration against recommended settings.

The wizard monitors network data and logs possible unauthorized or malicious traffic.

The wizard logs the effectiveness of network security measures for baseline

comparisons.

Which service is enabled on a Cisco router by default that can reveal significant information about the router and potentially make it more vulnerable to attack?

HTTP

CDP

FTP

NTP

TFTP

Refer to the exhibit. What two facts can be determined from the output? (Choose two.)

The Cisco IOS image and configuration files have been properly secured.

ROMmon mode will be inaccessible upon entering the privileged EXEC reload

command.

The Cisco IOS Resilient Configuration feature is enabled.

The Cisco IOS Resilient Configuration feature has detected an image version

mismatch.

The Cisco IOS configuration files have been erased.

An administrator needs to create a user account with custom access to most privileged EXEC commands. Which privilege command is used to create this custom account?

privilege exec level 0

privilege exec level 1

privilege exec level 2

privilege exec level 15

What is the minimum recommended modulus key length for keys generated to use with SSH?

256

512

768

1024

2048

Which three options can be configured by Cisco AutoSecure? (Choose three.)

CBAC

SNMP

syslog

security banner

interface IP address

enable secret password

Which three commands are required to restore a primary bootset from a secure archive on a router on which Cisco IOS resilience is enabled? (Choose three.)

Restart the router in ROM monitor mode and display the secure bootset Cisco IOS image name using the dir command.

Restart the router, enter privileged EXEC mode, and display the secure bootset Cisco IOS image name using the show flash command.

Boot the secure bootset Cisco IOS image using the boot command with the filename.

Copy the secure bootset Cisco IOS image to flash using the copy IOS-backup-image flash command.

Restore the secure configuration file using the copy config-backup flash command.

Restore the secure configuration file using the secure boot-config restore filename command.

Refer to the exhibit. Routers R1 and R2 are connected via a serial link. One router is configured as the NTP master, and the other is an NTP client. Which two pieces of information can be obtained from the partial output of the show ntp associations detail command on R2? (Choose two.)

Both routers are configured to use NTPv2.

Router R1 is the master, and R2 is the client.

Router R2 is the master, and R1 is the client.

The IP address of R1 is 192.168.1.2.

The IP address of R2 is 192.168.1.2.

What are two characteristics of SNMP community strings? (Choose two.)

A vulnerability of SNMPv1, SNMPv2, and SNMPv3 is that they send the community

strings in plaintext.

Commonly known community strings should be used when configuring secure SNMP.

If the manager sends one of the correct read-only community strings, it can get

information and set information in an agent.

SNMP read-only community strings can be used to get information from an

SNMP-enabled device.

SNMP read-write community strings can be used to set information on an

SNMP-enabled device.

What are three requirements that must be met if an administrator wants to maintain device configurations via secure in-band management? (Choose three.)

network devices configured to accommodate SSH

a separate network segment connecting all management devices

at least one router acting as a terminal server

encryption of all remote access management traffic

connection to network devices through a production network or the Internet

direct access to the console ports of all network devices

If AAA is already enabled, which three CLI steps are required to configure a router with a specific view? (Choose three.)

assign a secret password to the view

assign commands to the view

assign users who can use the view

associate the view with the root view

create a superview using the parser view view-name command

create a view using the parser view view-name command

Which two characteristics apply to Role-Based CLI Access superviews? (Choose two.)

CLI views have passwords, but superviews do not have passwords.

Users logged in to a superview can access all commands specified within the associated

CLI views.

A single superview can be shared among multiple CLI views.

Commands cannot be configured for a specific superview.

Deleting a superview deletes all associated CLI views.

Refer to the exhibit. Based on the output of the show running-config command, which type of view is SUPPORT?

secret view, with a level 5 encrypted password

root view, with a level 5 encrypted secret password

superview, containing SHOWVIEW and VERIFYVIEW views

CLI view, containing SHOWVIEW and VERIFYVIEW commands

Refer to the exhibit. Which statement regarding the JR-Admin account is true?

JR-Admin can issue show, ping, and reload commands.

JR-Admin can issue ping and reload commands.

JR-Admin can issue only ping commands.

JR-Admin can issue debug and reload commands.

JR-Admin cannot issue any command because the privilege level does not match one of

those defined.

Which recommended security practice prevents attackers from performing password recovery on a Cisco IOS router for the purpose of gaining access to the privileged EXEC mode?

Keep a secure copy of the router Cisco IOS image and router configuration file as a

backup.

Disable all unused ports and interfaces to reduce the number of ways that the router can

be accessed.

Configure secure administrative control to ensure that only authorized personnel can

access the router.

Locate the router in a secure locked room that is accessible only to authorized personnel.

Provision the router with the maximum amount of memory possible.

An administrator defined a local user account with a secret password on router R1 for use with SSH. Which three additional steps are required to configure R1 to accept only encrypted SSH connections? (Choose three.)

configure the IP domain name on the router

enable inbound vty Telnet sessions

generate the SSH keys

configure DNS on the router

enable inbound vty SSH sessions

generate two-way pre-shared keys

By default, how many seconds of delay between virtual login attempts is invoked when the login

block-for command is configured?

one

two

three

four

five

Which set of commands are required to create a username of admin, hash the password using MD5, and force the router to access the internal username database when a user attempts to access the console?

R1(config)# username admin password Admin01pa55

R1(config)# line con 0

R1(config-line)# login local

R1(config)# username admin password Admin01pa55

R1(config)# line con 0

R1(config-line)# login internal

R1(config)# username admin Admin01pa55 encr md5

R1(config)# line con 0

R1(config-line)# login local

R1(config)# username admin secret Admin01pa55

R1(config)# line con 0

R1(config-line)# login local

R1(config)# username admin secret Admin01pa55

R1(config)# line con 0

R1(config-line)# login internal

Which three areas of router security must be maintained to secure an edge router at the network perimeter? (Choose three.)

physical security

flash security

operating system security

remote access security

router hardening

zone isolation

Refer to the exhibit. What two pieces of information can be gathered from the generated message? (Choose two.)

This message is a level five notification message.

This message appeared because a minor error occurred requiring further investigation.

This message appeared because a major error occurred requiring immediate action.

This message indicates that service timestamps have been globally enabled.

This message indicates that enhanced security was configured on the vty ports.

Refer to the exhibit. Which two statements describe the current SDM logging setup? (Choose two.)

Buffered logging will be enabled on the router for Logging Level 7 messages.

Buffered logging will be enabled on the syslog server for Logging Level 7 messages.

All messages with a trap level of 4 and higher (less critical) will be logged.

All messages with a trap level of 4 and lower (more critical) will be logged.

The router interface IP address that is connected to the syslog server is 192.168.1.3.

The syslog server IP address is 192.168.1.3.

Refer to the exhibit. What is the significance of secret 5 in the generated output?

The ADMIN password is encrypted using DH group 5.

The ADMIN password is encrypted via the service password-encryption command.

The ADMIN password is hashed using MD5.

The ADMIN password is hashed using SHA.

Which two operations are required to implement Cisco SDM One-Step Lockdown? (Choose

two.)

Choose the One-Step Lockdown feature.

Apply the documented network policies.

Deliver the configuration changes to the router.

Compare the router configuration against recommended settings.

Select the Firewall and ACL task on the SDM Configuration screen.

Which statement matches the CLI commands to the SDM wizard that performs similar configuration functions?

aaa configuration commands and the SDM Basic Firewall wizard

auto secure privileged EXEC command and the SDM One-Step Lockdown wizard

class-maps, policy-maps, and service-policy configuration commands and the SDM IPS

wizard

setup privileged EXEC command and the SDM Security Audit wizard

What are two characteristics of the SDM Security Audit wizard? (Choose two.)

It uses interactive dialogs and prompts to implement AAA.

It automatically enables Cisco IOS firewall and implements Cisco IOS IPS security configurations to secure the router.

It displays a screen with Fix-it check boxes to let you choose which potential security-related configuration changes to implement.

It requires users to first identify which router interfaces connect to the inside network and which connect to the outside network.

It is initiated from CLI and executes a script in which the managment plane functions and forwarding plane services are tested against known vulnerabilities.

信息安全实验十参考答案及翻译

PT Activity: Configure a Network for Secure Operation Addressing Table Learning Objectives ?Secure the routers with strong passwords, password encryption and a login banner. ?Secure the console and VTY lines with passwords. ?Configure local AAA authentication. ?Configure SSH server. ?Configure router for syslog. ?Configure router for NTP. ?Secure the router against login attacks. ?Configure CBAC and ZPF firewalls. ?Secure network switches. Introduction In this comprehensive practice activity, you will apply a combination of security measures that were introduced in the course. These measures are listed in the objectives. In the topology, R1 is the edge outer for the Company A while R3 is the edge router for Company B. These networks are interconnected via the R2 router which represents the ISP. You will configure various security features on the routers and switches for Company A and Company B. Not all security features will be configured on R1 and R3. The following preconfigurations have been made: ?Hostnames on all devices ?IP addresses on all devices

CCNASecurityChap2答案

Which three services on a router does Cisco SDM One-Step Lockdown enable? (Choose three.) SNMP TCP intercepts SSH access to the router Cisco Discovery Protocol password encryption service firewall on all outside interfaces Which statement describes the operation of the Cisco SDM Security Audit wizard? The wizard configures a router to prevent unauthorized access. The wizard compares a router configuration against recommended settings. The wizard monitors network data and logs possible unauthorized or malicious traffic. The wizard logs the effectiveness of network security measures for baseline comparisons. Which service is enabled on a Cisco router by default that can reveal significant information about the router and potentially make it more vulnerable to attack? HTTP CDP FTP NTP TFTP