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QUESTION 1
Which meaning of this error message on a Cisco ASA is true?
A. The route map redistribution is configured incorrectly.
B. The default route is undefined.
C. A packet was denied and dropped by an ACL.
D. The host is connected directly to the firewall.
Correct Answer: B
QUESTION 2
Which type of header attack is detected by Cisco ASA basic threat detection?
A. Connection limit exceeded.
B. Denial by access list.
C. Failed application inspection.
D. Bad packet format.
Correct Answer: D
QUESTION 3
Refer to the exhibit.
A user authenticates to the NAS, which communicates to the VACAS server authentication. The TACACS SERVER then accesses the Active Directory Server through the ASA firewall to validate the user credentials. Which protocol-Port pair must be allowed access through the ASA firewall?
A. SMB over TCP 455.
B. DNS over UDP 53.
C. LDAP over UDP 389.
D. global catalog over UDP 3268.
E. TACACS over TCP 49.
F. DNS over TCP 53.
Correct Answer: C
QUESTION 4
Which WEP configuration can be exploited by a weak IV attack?
A. When the static WEP password has been stored without encryption.
B. When a per-packet WEP key is in use.
C. When a 64-bit key is in use.
D. When the static WEP password has been given away.
E. When a 40-bit key is in use.
F. When the same WEP key is used to create every packet.
Correct Answer: E
QUESTION 5
Which two statements about Botnet Traffic Filter snooping are true?(Choose two)
A. It requires DNS packet inspection to be enabled to filter domain names in the dynamic database.
B. It requires the Cisco ASA DNS server to perform DNS lookups.
C. It can inspect both IPV4 and IPV6 traffic.
D. It can log and block suspicious connections from previously unknown bad domains and IP addresses.
E. It checks inbound traffic only.
F. It checks inbound and outbound traffic.
Correct Answer: A
400-251 Practice Test400-251 Study Guide400-251 Exam Questions
QUESTION 6
Which three statements about SXP are true?(Choose three)
A. It resides in the control plane, where connections can be initiated from a listener.
B. Packets can be tagged with SGTs only with hardware support.
C. Each VRF supports only one CTS-SXP connection.
D. To enable an access device to use IP device tracking to learn source device IP addresses,DHCP snooping must be configured.
E. The SGA ZBPF uses the SGT to apply forwarding decisions.
F. SeparateVRFs require different CTS-SXP peers, but they can use the same source IP addresses.
Correct Answer: ABC
QUESTION 7
Which file extensions are supported on the Firesight Management Center 6.1(3.1) file policies that can be analyzed dynamically using the Threat Grid Sandbox integration?
A. MSEXE, MSOLE2, NEW-OFFICE,PDF;
B. DOCX, WAV,XLS,TXT
C. TXT, MSOLE2, WAV, PDF.
D. DOC, MSOLE2, XML, PF.
Correct Answer: A
QUESTION 9
Which effect of the crypto pki authenticate commend is true?
A. It sets the certificate enrollment method.
B. It retrievers and authentication a CA certificate.
C. It configures a CA trust point.
D. It displays the current CA certificate.
Correct Answer: B
QUESTION 10
Which effect of the ip nhrp map multicast dynamic command is true?
A. It configures a hub router to automatically add spoke routers to multicast replication list of the hub.
B. It enables a GRE tunnel to operate without the IPsec peer or crypto ACLs.
C. It enables a GRE tunnel to dynamically update the routing tables on the devices at each end of the tunnel.
D. It configures a hub router to reflect the routes it learns from a spoke back to other spoke back to other spokes through the same interface.
Correct Answer: A
QUESTION 12
Which two statements about Cisco URL Filtering on Cisco IOS Software are true?(Choose two)
A. It supports Websense and N2H2 filtering at the same time.
B. It supports local URL lists and third-party URL filtering servers.
C. By default, it uses ports 80 and 22.
D. It supports HTTP and HTTP traffic.
E. By default, it allows all URLs when the connection to the filtering server is down.
F. It requires minimal CPU time.
Correct Answer: AB
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