Cisco CCNA Security, final exam.

1. What will be disabled as a result of the no service password-recovery

command ?

aaa new-model global configuration command.

change to the configuration register.

password encryption service.

ability to access ROMmon.

2. What occurs after RSA keys are generated on a Cisco router to prepare for

secure device management?

All vty ports are automatically configured for SSH to provide secure

management.

The general-purpose key size must be specified for authentication with the

crypto key generate rsa general-keys mo command.

The keys must be zeroized to reset secure shell before configuring other

parameters.

The generated keys can be used by SSH.

3. Which action best describe a MAC address spoofing attack?

altering the MAC address of an attacking host to match that of a legitimate

host.

bombarding a switch with fake source MAC addresses.

forcing the election of a rogue root bridge

flooding the LAN with excessive traffic

4. What functionality is provided by Cisco SPAN in a switched network?

It mitigates MAC address overflow attacks.

It mirrors traffic that passes through a switch port or VLAN to another port for

traffic analysis.

It protects the switched network from receiving BPDUs on ports that should

not be receiving them.

It inspects voice protocols to ensure that SIP, SCCP, H.323, and MGCP

requests conform to voice standards.

It copies traffic that passes through a switch interface and sends the data

directly to a syslog or SNMP server for analysis.

5. What precaution should be considered when the no service password–

recovery command has been issued on an IOS device?

The passwords in the configuration files are in clear text.

IOS recovery requires a new system flash with the IOS image.

When the password is lost, access to the device will be terminated.

The device must use simple password authentication and cannot have user

authentication.

6. A network technician is configuring SNMPv3 and has set a security level of

auth. What is the effect of this setting?

Authenticates a packet using the SHA algorithm only.

Authenticates a packet by a string match of the username or community

string.

Authenticates a packet by using either the HMAC with MD5 method or the

SHA method.

Authenticates a packet by using either the HMAC MD5 or HMAC SHA

algorithms and encrypts the packet using either the DES, 3DES or AES

algorithms.

7

.

Refer to the exhibit. Which type of VPN is implemented?

remote-access GRE VPN

remote-access IPsec VPN

remote-access SSL VPN

site-to-site GRE VPN

site-to-site IPsec VPN

site-to-site SSL VPN

8. Router(config)# ntp authenticate

Router(config)# ntp authentication-key 42 md5 aNiceKey

Router(config)# ntp trusted-key 2

Refer to the exhibit. What will be the effect of the commands that are shown on

R1?

Authentication with the NTP master will be successful, and R1 will get the

time from the NTP master.

Authentication with the NTP master will be successful, but R1 will not get the

time from the NTP master.

Authentication with the NTP master will fail, and R1 will get the time from the

NTP master.

Authentication with the NTP master will fail, and R1 will not get the time from

the NTP master.

9. What login enhancement configuration command helps successive login DoS

attacks?

exec-timeout

login block-for

privilege exec level

service password-encryption

10. What are access attacks?

attacks that prevent users from accessing network services

attacks that modify or corrupt traffic as that traffic travels across the network

attacks that exploit vulnerabilities to gain access to sensitive information

attacks that involve the unauthorized discovery and mapping of systems,

services, and vulnerability

11. Nov 30 11:00:24 EST: %SYS-5-CONFIG-I: Configured from console by vty0

(10.64.2.2)

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

This is an alert message for which immediate action is needed

This is an error message for which warning conditions exist.

This is an error message indicating the system is unusable

12. Which three major subpolicies should comprise a comprehensive security

policy that meets the security needs of a typical enterprise? (Choose three)

end-user policies

departmental policies

governing policies

human resource policies

organizational policies

technical policies

13. R1(config)# logging host 10.1.1.17

R1(config)# logging trap errors

R1(config)# logging source-interface loopback 0

R1(config)# logging on

Refer to the exhibit. An administrator has entered the commands that are

shown on router R1. At what trap level is the logging function set?

2

3

5

6

14. Which mitigation technique can help prevent MAC table overflow attacks?

root guard

BPDU guard

storm control

switchport security

15. An organization requires that individual users be authorized to issue specific

Cisco IOS commands. Which AAA protocols support this requirement?

TACACS+ because it separates authentication and authorization, allowing

for more customization.

RADIUS because it supports multiple protocols, including ARA and

NetBEUI.

TACACS+ because it supports extensive accounting on a per-user or per-

group basis.

RADIUS because it implements authentication and authorization as one

process.

16.

Refer to the exhibit. Based on the IPS configuration that is provided, which

statement is true?

The signatures in all categories will be retired and not be used by the IPS.

The signatures in all categories will be compiled into memory and used by

the IPS.

Only the signatures in the ios_ips basic category will be compiled into

memory and used by the IPS.

The signatures in the ios_ips basic category will be retired and the

remaining signatures will be compiled into memory and used by the IPS.

17.

Refer to the exhibit. Based on the provided configuration, which traffic will be

examined by the IPS that is configured on router R1?

Traffic that is initiated from LAN 1 and LAN 2

http traffic that is initiated from LAN 1

return traffic from the web server

traffic that is destined to LAN 1 and LAN 2

no traffic will be inspected

18

.

Refer to the exhibit. An administrator is configuring ZPF using the SDM Basic

Firewall Configuration wizard. Which command is generated after the

administrator selects the Finish button?

zone security Out-zone on interface Fa0/0

zone security Out-zone on interface S0/0/0

zone member security Out-zone on interface Fa0/0

zone member security Out-zone on interface s0/0/0

19. Which two statements describe appropriate general guidelines for configuring

and applying ACLs? (Choose two)

Multiple ACLs per protocol and per direction can be applied to an interface.

If an ACL contains no permit statements, all traffic is denied by default.

The most specific ACL statements should be entered first because of the

top-down sequential nature of ACLs.

Standard ACLs are placed closest to the source, whereas Extended ACLs

are placed closest to the destination.

If a single ACL is to be applied to multiple interfaces, it must be configured

with a unique number for each interface.

20. Which three statements are characteristics of the IPsec protocol? (Choose

three)

IPsec is a framework of open standards.

IPsec is implemented at Layer 4 of the OSI model.

IPsec ensures data integrity by using a hash algorithm.

IPsec uses digital certificates to guarantee confidentiality

IPsec is bound to specific encryption algorithms, such as 3DES and AES.

IPsec authenticates users and devices that communicate independently.

21. Which three additional precautions should be taken when remote access is

required in addition to local access of networking devices? (Choose three)

A legal notice should not be displayed when access is obtained.

All activity to the specified ports that are required for access should be

unrestricted.

All configuration activities should required the use of SSH or HTTPS.

All administrative traffic should be dedicated to the management network.

The number of failed login attempts should not be limited, but the time

between attempts should.

Packet filtering should be required so that only identified administration

hosts and protocols can gain access.

22. Which statement describes a factor to be considered when configuring a zone-

based policy firewall?

An interface can belong to multiple zones.

The router always filters the traffic between interfaces in the same zone.

The CBAC ip inspect command can coexist with ZPF as long as it is used

on interfaces that are in the same security zones.

A zone must be configured with the zone security global command before it

can be used in the zone-member security command.

23. What is a result of securing the Cisco IOS image using the Cisco IOS Resilient

Configuration feature?

The Cisco IOS image file is not visible in the output of the show flash

command.

The Cisco IOS image is encrypted and then automatically backed up to a

TFTP server.

The Cisco IOS image is encrypted and then automatically backed up to the

NVRAM.

When the router boots up, the Cisco IOS image is loaded from a secure

FTP location

24. What are three common examples of AAA implementation on Cisco routers?

(Choose three)

Authenticating administrator access to the router console port, and vty ports

Authenticating remote users who are accessing the corporate LAN through

IPsec VPN connections

Implementing public key infrastructure to authenticate and authorize IPsec

VPN peers using digital certificates

Implementing command authorization with TACACS+

Securing the router by locking down all unused services

Tracking Cisco Netflow accounting statistics

25. When port security is enabled on a Cisco Catalyst switch, what is the default

action when the maximum number of allowed MAC addresses is exceeded?

The violation mode for the port is set to restrict.

The MAC address table is cleared, and the new MAC address is entered

into the table.

The port remains enabled, but the bandwidth is throttled until the old MAC

addresses are aged out.

The port is shut down.

26. Which three statements describe the IPsec protocol framework? (Choose

three)

AH uses IP protocol 51.

AH provides encryption and integrity.

AH provides integrity and authentication.

ESP uses UDP protocol 50.

ESP requires both authentication and encryption.

ESP provides encryption, authentication, and integrity.

27. 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.

The root user must be assigned to each privilege level defined.

Commands set on a higher privi lege level are not available for lower

privileged users

Views are required to define the CLI commands that each user can access.

Creating a user account that needs access to most but not all commands

can be a tedious process

It is required that all 16 privilege levels be defined, whether they are used

28. Which Cisco IOS configuration option instructs the IPS to compile a signature

category named ios_ips into memory and use it to scan traffic?

R1(config)# ip ips signature-category

R1(config-ips-category)# category all

R1(config-ips-category-action)# retired false

R1(config)# ip ips signature-category

R1(config-ips-category)# category ios_ips basic

R1(config-ips-category-action)# retired false

R1(config)# ip ips signature-category

R1(config-ips-category)# category all

R1(config-ips-category-action)# enabled true

R1(config)# ip ips signature-category

R1(config-ips-category)# category ios_ips basic

R1(config-ips-category-action)# enabled true

29.

Refer to the exhibit. An administrator has configured router R1 as indicated.

However, SDEE messages fail to log. Which solution corrects this problem?

Issue the logging on command in global configuration.

Issue the ip ips notify sdee command in global configuration.

Issue the ip audit notify log command in global configuration.

Issue the clear ip ips sdee events command to clear the SDEE buffer.

30. Which three principles are enabled by a Cisco Self-Defending Network?

(Choose three.)

adaptability

collaboration

insulation

integration

mitigation

scalability

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

Network IPS has a difficult time reconstructing fragmented traffic to

determine if an attack was successful.

Network IPS is incapable of examining encrypted traffic.

Network IPS is operating system-dependent and must be customized for

each platform.

Network IPS is unable to provide a clear indication of the extent to which the

network is being attacked.

Network IPS sensors are difficult to deploy whennew networks are added.

32. Which access list statement permits HTTP traffic that is sourced from host

10.1.129.100 port 4300 and destined to host 192.168.30.10?

access-list 101 permit tcp any eq 4300

access-list 101 permit tcp 192.168.30.10 0.0.0.0 eq 80 10.1.0.0

0.0.255.255

access-list 101 permit tcp 10.1.129.0 0.0.0.255 eq www 192.168.30.10

0.0.0.0 eq www

access-list 101 permit tcp 10.1.128.0 0.0.1.255 eq 4300 192.168.30.0

0.0.0.15 eq www

access-list 101 permit tcp host 192.168.30.10 eq 80 10.1.0.0 0.0.255.255

eq 4300

33. Which type of SDM rule is created to govern the traffic that can enter and leave

the network based on protocol and port number?

NAC rule

NAT rule

IPsec rule

access rule

34

.

Refer to the exhibit. When configuring SSH on a router using SDM from the

Configure menu, which two steps are required? (Choose two.)

Choose Additional Tasks > Router Access > SSH to generate the RSA keys.

Choose Additional Tasks > Router Access > VTY to specify SSH as the

input and output protocol.

Choose Additional Tasks > Router Properties > Netflow to generate the RSA

keys.

Choose Additional Tasks > Router Properties > Logging to specify SSH as

the input and output protocol.

Choose Additional Tasks > Router Access > AAA to generate the RSA keys.

Choose Additional Tasks > Router Access > Management Access to specify

SSH as the input and output protocol

35.

Refer to the exhibit. Which two statements are correct regarding the

configuration on switch S1? (Choose two.)

Port Fa0/5 storm control for broadcasts will be activated if traffic exceeds

80.1 percent of the total bandwidth.

Port Fa0/6 storm control for multicasts and broadcasts will be activated if

traffic exceeds 2,000,000 packets per second.

Port Fa0/6 storm control for multicasts will be activated if traffic exceeds

2,000,000 packets per second.

Port Fa0/5 storm control for multicasts will be activated if traffic exceeds

80.1 percent of the total bandwidth.

Port Fa0/5 storm control for broadcasts and multicasts will be activated if

traffic exceeds 80.1 percent of 2,000,000 packets per second.

36.

Refer to the exhibit. Which three things occur if a user attempts to log in four

times within 10 seconds using an incorrect password? (C hoose three.)

Subsequent virtual login attempts from the user are blocked for 60

seconds.

During the quiet mode, an administrator can virtually log in from any host

on network 172.16.1.0/24.

Subsequent console login attempts are blocked for 60 seconds.

A message is generated indicating the username and source IP address of

the user.

During the quiet mode, an administrator can log in from host 172.16.1.2.

No user can log in virtually from any host for 60 seconds.

37. Which type of Layer 2 attack makes a host appear as the root bridge for a

LAN?

LAN storm

MAC address spoofing

MAC address table overflow

STP manipulation

VLAN attack

38. What occurs after RSA keys are generated on a Cisco router to prepare for

secure device management?

All vty ports are automatically configured for SSH to provide secure

management.

The general-purpose key size must be specified for authentication with the

crypto key generate rsa general-keys mo command.

The keys must be zeroized to reset secure shell before configuring other

parameters.

The generated keys can be used by SSH.

39. An organization has mobile workers who usecorporate-owned laptops at

customer sites to view inventory and place orders.Which type of VPN allows

these workers to securely access all of theclient/server applications of the

organization?

clientless SSL VPN

remote-access IPsec VPN

site-to-site IPsec VPN

HTTPS-enabled SSL VPN

40. Which two guidelines relate to in-band networkmanagement? (Choose two.)

Apply in-band management only to devices that must be managed on the

production network.

Implement separate network segments for the production network and the

management network.

Attach all network devices to the same management network.

Use IPSec, SSH,or SSL

41. Which three commands are required to configure SSH ona Cisco router?

(Choose three.)

ip domain-name name in global configuration mode

transport input ssh on a vty line

no ip domain-lookup in global configuration mode

passwordpassword on a vty line

service password-encryption in global configuration mode

crypto keygenerate rsa in global configuration mode

42. Anadministrator 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

43

.

Refer to the exhibit. An administrator has configureda standard ACL on R1 and

applied it to interface serial 0/0/0 in the outbounddirection. What happens to

traffic leaving interface serial 0/0/0 that does notmatch the configured ACL

statements?

The resulting action is determined by the destination IP address.

The resulting action is determined by the destination IP address and

portnumber.

The source IP address is checked and, if a match is not found, traffic

isrouted out interface serial 0/0/1.

The traffic is dropped

44. Which statement describes configuring ACLs to controlTelnet traffic destined to

the router itself?

The ACL must be applied to each vty line individually.

The ACL is applied to the Telnet port with the ip access-group command.

Apply the ACL to the vty lines without thein orout option required when

applying ACLs to interfaces.

The ACL should be applied to all vty lines in thein direction to prevent

anunwanted user from connecting to an unsecured port.

45. Which three statements describe SSL-based VPNs? (Choose three.)

A symmetric algorithms are used for authentication and key exchange.

It is impossible to configure SSL and IPsec VPNs concurrently on the

samerouter.

Special-purpose client software is required on the client machine.

Symmetric algorithms are used for bulk encryption.

The authentication process uses hashing technologies.

The application programming interface is used to extensively modify the

SSLclient software.

The primary restriction of SSL VPNs is that they are currently supported

onlyin hardware.

4

6.

Refer to the exhibit. What information can be obtained from the

AAAconfiguration statements?

The authentication method list used for Telnet is named ACCESS.

The authentication method list used by the consoleport is named ACCESS.

The local database is checked first whenauthenticating console and Telnet

access to the router.

If the TACACS+ AAA server is not available, nousers can establish a Telnet

session with the router.

If the TACACS+ AAA server is not available, consoleaccess to the router can

be authenticated using the local database.

47. Which two Cisco IPSmanagement and monitoring tools are examples of GUI-

based, centrally managedIPS solutions? (Choose two.)

Cisco Adaptive Security Device Manager

Cisco IPS Device Manager

Cisco Router and Security Device Manager

Cisco Security Manager

Cisco Security Monitoring, Analysis, and Response System.

48

.

Refer to the exhibit.Which AAA function and protocol is in use in the network?

The client is authorizing commands using the TACACS+protocol.

The client is authorizing commands using the RADIUS protocol.

The client is authenticating using the RADIUS protocol.

The client is authenticating using the TACACS+protocol

49. Which three OSI layers can be filtered by a stateful firewall? (Choose three.)

Layer 2

Layer 3

Layer 4

Layer 5

Layer 6

Layer 7

50

.

Refer to the exhibit. Based on the SDM screenshown, which two actions will the

signature take if an attack is detected?(Choose two.)

Reset the TCP connection to terminate the TCP flow.

Drop the packet and all future packets from thisTCP flow.

Generatean alarm message that can be sent to a syslog server.

Drop the packet and permit remaining packets from this TCP flow.

Create an ACL that denies traffic from the attacker IP address.

51. Which three switch security commands are required to enable port security on

a portso that it wi ll dynamically learn a single MAC address and disable the port

if a host with any other MAC address is connected? (Choose three.)

switchport mode access

switchport mode trunk

switchportport-security

switchport port-security maximum 2

switchportport-security mac-address sticky

switchport port-security mac-addressmac-address

52. Whichstatement describes the SDM Security Audit wizard?

After the wizard identifies the vulnerabilities, theSDM One-Step Lockdown

feature must be used to make all security-relatedconfiguration changes.

After the wizardidentifies the vulnerabilities, it automatically makes all

security-relatedconfiguration changes.

The wizard autosenses the inside trusted and outside untrusted interfaces

todetermine possible security problems that might exist.

The wizard is based on the Cisco IOS AutoSecure feature.

The wizard is enabled using the Intrusion Prevention task.

53. Which component of AAA is used to determine which resources a user

canaccess and which operations the user is allowed to perform?

Auditing

accounting

authorization

authentication

54. Which two protocols allow SDM to gather IPS alertsfrom a Cisco ISR router?

(Choose two.)

FTP

HTTPS

SDEE

SSH

Syslog

TFTP

55

.

Refer to the exhibit. Which AAA command logs the activity of a PPP session?

aaa accounting connection start-stop group radius

aaa accounting connection start-stop group tacacs+

aaa accounting exec start-stop group radius

aaa accounting exec start-stop group tacacs+

aaa accounting network start-stop group radius

aaa accounting network start-stop group tacacs+

56. What is a feature of the TACACS+ protocol?

It combines authentication and authorization as oneprocess.

It encrypts theentire body of the packet for more secure communications.

It utilizes UDP to provide more efficient packet transfer.

It hides passwords during transmission using PAP and sends the rest of

thepacket in plain text.

5

7.

Refer to the exhibit. Which interface configuration completes the

CBACconfiguration on router R1?

R1(config)# interface fa0/0

R1(config-if)# ip inspect INSIDE in

R1(config-if)# ip access-group OUTBOUND in

R1(config)# interface fa0/1

R1(config-if)# ip inspect INSIDE in

R1(config-if)# ip access-group OUTBOUND in

R1(config)# interface fa0/1

R1(config-if)# ip inspect OUTBOUND in

R1(config-if)# ip access-group INSIDE out

R1(config)# interface fa0/0

R1(config-if)# ip inspect OUTBOUND in

R1(config-if)# ip access-group INSIDE in

R1(config)#interface fa0/1

R1(config-if)# ip inspect OUTBOUND in

R1(config-if)#ip access-group INSIDE in

58

.

Refer to the exhibit. Which Cisco IOS security feature is implemented onrouter

R2?

CBAC firewall

reflexive ACL firewall

zone-based policy firewall

AAA access control firewall

59. Which Cisco IOS privileged EXEC command can be used to verify that

theCisco IOS image and configuration files have been properly backed up and

secured?

Router# dir

Router# show archive

Router# show secure bootset

Router# show flash

60. Which device supports the use of SPAN to enable monitoring of malicious

activity?

Cisco NAC

Cisco IronPort

Cisco Security Agent

Cisco Catalyst switch

61. Which three statements describe zone-based policyfirewall rules that govern

interface behavior and the traffic moving betweenzone member interfaces?

(Choose three.)

An interface can be assigned to multiple securityzones.

Interfaces can be assigned to a zone before the zone is created.

Pass, inspect,and drop options can only be applied between two zones.

If traffic is to flow between all interfaces in arouter, each interface must be a

member of a zone.

Traffic is implicitly prevented from flowing by default among interfaces

thatare members of the same zone.

To permit traffic to and from a zone member interface, a policy allowing

orinspecting traffic must be configured between that zone and any other

zone.

62.

Refer to the exhibit. Based on the SDM screen shown, which twoconclusions

can be drawn about the IKE policy being configured? (Choose two.)

It will use digital certificates for authentication.

It will use apredefined key for authentication.

It will use a very strong encryption algorithm.

It will be the default policy with the highest priority.

63. The use of 3DES within the IPsec framework is anexample of which of the five

IPsec building blocks?

authentication

confidentiality

Diffie-Hellman

integrity

nonrepudiation

64. Which statement describes the operation of the IKE protocol?

It uses IPsec to establish the key exchange process.

It uses sophisticated hashing algorithms to transmit keys directly across a

network.

It calculates shared keys based on the exchange of a series of data

packets.

It uses TCP port 50 to exchange IKE information between the security

gateways

65. Which three types of views are available when configuring the Role-BasedCLI

Access feature? (Choose three.)

superuser view

root view

superview

CLI view

admin view

config view

66. Which statement describes a MAC address table overflow attack?

An attacker alters the MAC address in a frame to matchthe address of a

target host.

Frames flood the LAN, creating excessive traffic and degrading network

performance.

The attacking host broadcasts STP configuration and topology change

BPDUs to force spanning-tree recalculations.

A software tool floods a switch with frames containing randomly generated

sourceand destination MAC and IP addresses.

67. When configuring a class map for zone-based policy firewall, how are thematch

criteria applied when using the match-all parameter?

Traffic must match all of the match criteria specified in the statement.

Traffic must match the first criteria in the statement.

Traffic must match at least one of the match criteria statements.

Traffic must match according to an exclusive disjunction criteria.

68. Which three statements describe limitations in using privilege levelsfor

assigning command authorization? (Choose three.)

There is no access control to specific interfaces on a router.

The root user must be assigned to each privilege level defined.

Commands set on a higher privi lege level are not available for lower

privileged users.

Views are required to define the CLI commands that each user can access.

Creating a user account that needs access to most but not all commands

can be a tediousprocess.

It is required that all 16 privilege levels be defined, whether they are usedor

not.

69. What is an important difference between network-based and host-

basedintrusion prevention?

Host-based IPS is more scalable than network-basedIPS.

Host-based IPS can work in promiscuous mode or inline mode.

Network-based IPS is better suited for inspection of SSL and TLS encrypted

dataflows.

Network-based IPS provides better protection against OS kernel-level

attacks onhosts and servers.

Network-basedIPS can provide protection to hosts without the need of

installing specializedsoftware on each one.

70

.

Refer to the exhibit. Based on the output from the show secure bootset

command on router R1, which three conclusions can be drawn regarding Cisco

IOS Resilience? (Choose three.)

A copy of the Cisco IOS image file has been made.

A copy of the router configuration file has been made.

The Cisco IOS image file is hidden and cannot be copied, modified, or

deleted.

The Cisco IOS image filename will be listed when the show flash command

isissued on R1.

The copy tftp flash command was issued on R1.

The secure boot-config command was issued on R1.

71. Which element ofthe Cisco Threat Control and Containment solution defends

against attempts toattack servers by exploiting application and operating

system vulnerabilities?

threat control for email

threat control for endpoints

threat controlfor infrastructure

threat control for systems

72.

Refer to the exhibit. Based on the SDM NTP Server Details screen, which two

conclusions can be drawn from the information entered and check boxes

checked? (Choose two.)

NTPv1 is being configured.

The IP address of the NTP server is 10.1.1.2.

The IP address of the NTP client is 10.1.1.2.

NTP messages will be sent and received on interface Serial0/0/0 for this

router.

NTP routing updates will be sent and received on interface Serial0/0/0 of

the NTP server.

73. Which two statements match a type of attack with an appropriate

example?(Choose two.)

To conduct an access attack, an attacker uses L0phtCrack to obtain a

Windows server password.

To conduct an access attack, an attacker uses Wireshark to capture

interesting network traffic.

To conduct a reconnaissance attack, an attacker initiates a ping of death

attack to a targeted server.

To conduct a DoS attack, an attacker uses handler systems and zombies to

obtain a Windows server password.

To conducta DoS attack, an attacker initiates a smurf attack by sending a

large number ofICMP requests to directed broadcast addresses.

To conduct a reconnaissance attack, an attacker creates a TCP SYN flood

causing the server to spawn many half-open connections and become

unresponsive.

74. The use of which two options are required for IPsec operation? (Choosetwo.)

AH protocols for encryption and authentication

Diffie-Hellmanto establish a shared-secret key

IKE to negotiate the SA

PKI for pre-shared-key authentication

SHA for encryption

75. Which three security services are provided by digital signatures? (Choose

three.)

authenticatesthe source

authenticates the destination

guarantees data has not changed in transit

provides nonrepudiation of transactions

provides nonrepudiation using HMAC functions

provides confidentiality of digitally signed data

76. Which three statements should be considered when applying ACLs to aCisco

router? (Choose three.)

Place generic ACL entries at the top of the ACL.

Place more specific ACL entries at the top of the ACL.

Router-generated packets pass through ACLs on the router without filtering.

ACLs always search for the most specific entry before taking any filtering

action.

A maximum of three IP access lists can be assigned to an interface

perdirection (in or out).

An access list applied to any interface without a configured ACL allows all

traffic to pass.

77. Which consideration is important when implementing syslog in a network?

Enable the highest level of syslog available to ensurelogging of all possible

event messages.

Log all messages to the system buffer so that they can be displayed

whenaccessing the router.

Synchronizeclocks on all network devices with a protocol such as Network

Time Protocol.

UseSSH to access syslog information.

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