2017 August Cisco Official New Released 400-251 Dumps in Lead2pass.com!
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This dump is valid to pass Cisco 400-251 exam and don’t just memorize the answer, you need to get through understanding of it because the question changed a little in the real exam. The material is to supplement your studies.
Following questions and answers are all new published by Cisco Official Exam Center: https://www.lead2pass.com/400-251.html
QUESTION 251
Which three Cisco attributes for LDAP authorization are supported on the ASA? (Choose three)
A. L2TP-Encryption
B. Web-VPN-ACL-Filters
C. IPsec-Client-Firewall-Filter-Name
D. Authenticated-User-Idle-Timeout
E. IPsec-Default-Domain
F. Authorization-Type
Answer: BDE
Explanation:
Something wrong with the question. All 6 options given are all supported by Cisco ASA. Check out this document for all attributes supported, they are all in the table 1-2
http://www.cisco.com/c/en/us/td/docs/security/asa/asa90/configuration/guide/asa_90_cli_config/ref_extserver.pdf
QUESTION 252
Which two options are system requirements for single sign-on on Cisco Unified Communications Manager? (Choose two)
A. OpenAM must be deployed in a different domain Microsoft Active Directory.
B. All participating entities must have their clocks synchronized.
C. The local user profile on Cisco Unified Communications must be disabled.
D. IWA and Kerberos authentication must be configured in the Windows domain.
E. Microsoft Active Directory must be deployed in a domain-based configuration.
Answer: BE
QUESTION 253
Which of the following statement is true about the ARP attack?
A. Attackers sends the ARP request with the MAC address and IP address of a legitimate resource in the network.
B. Attackers sends the ARP request with the MAC address and IP address of its own.
C. ARP spoofing does not facilitate man-in-the middle attack of the attackers.
D. Attackers sends the ARP request with its own MAC address and IP address of a legitimate resource in the network.
Answer: D
QUESTION 254
During a DoS attacks all of the data is lost from a user’s laptop and the user must now rebuild the system.
Which tool can the user use to extract the outlook PST file from the Microsoft server database?
A. Eseutil. exe
B. NTabackup.cex
C. Exmerge.exe
D. Ost2st.exe
Answer: C
QUESTION 255
A Cisco Easy VPN software client is unable to access its local LAN devices once the VPN tunnel is established.
What is the best way to solve this issue?
A. The IP address that is assigned by the Cisco Easy VPN Server to the client must be on the same network as the local LAN of the client.
B. The Cisco Easy VPN Server should apply split-tunnel-policy excludespecified with a split-tunnel-list containing the local LAN addresses that are relevant to the client.
C. The Cisco Easy VPN Server must push down an interface ACL that permits the traffic to the local LAN from the client.
D. The Cisco Easy VPN Server should apply a split-tunnel-policy tunnelall policy to the client.
E. The Cisco Easy VPN client machine needs to have multiple NICs to support this.
Answer: B
QUESTION 256
Which two statements about IKEv2 are true? (Choose two)
A. It uses EAP authentication
B. It uses X.509 certificates for authentication
C. The profile is a collection of transforms used to negotiate IKE SAs
D. It supports DPD and Nat-T by default
E. The profile contains a repository of symmetric and asymmetric preshared keys
F. At minimum, a complete proposal requires one encryption algorithm and one integrity algorithm
Answer: AD
QUESTION 257
Which two OSPF network types support the concept of a designated router? (Choose two.)
A. broadcast
B. NBMA
C. point-to-multipoint
D. point-to-multipoint nonbroadcast
E. loopback
Answer: AB
QUESTION 258
Given the IPv4 address 10.10.100.16, which two address are valid IPv4-compatible IPv6 addresses? (Choose twoChoose two)
A. 0:0:0:0:0:10:10:100:16
B. 0:0:10:10:10:16:0:0:0
C. 0:0:10:10:100:16:0:0:0
D. ::10:10:100:16
E. :::A:A:64:10
Answer: AD
QUESTION 259
What technology can you implement on your network to allow IPv4-dependent applications to work with IPv6- capable application?
A. NAT 6to4
B. DS-lite
C. NAT-PT
D. ISATAP
E. NAT64
Answer: E
QUESTION 260
Which three fields are part of the AH header? (Choose three)
A. Destination address
B. Protocol ID
C. Packet ICV
D. SPI identifying SA
E. Next header
F. Application port
G. Source address
Answer: CDE
QUESTION 261
What ASA feature can do use to restrict a user to a specific VPN group?
A. A webtypeACL
B. MPF
C. A VPN filter
D. Group-lock
Answer: D
QUESTION 262
Which two statements about SGT Exchange Protocol are true? (Choose two)
A. It propagates the IP-to-SGT binding table across network devices that do not have the ability to perform SGT tagging at Layer 2 to devices that support it
B. SXP runs on UDP port 64999
C. A connection is established between a “listener” and a “speaker”
D. SXP is only supported across two hops
E. SXPv2 introduces connection security via TLS
Answer: AC
QUESTION 263
Which three statements are true regarding RFC 5176 (Change of Authorization)? (Choose three.)
A. It defines a mechanism to allow a RADIUS server to initiate a communication inbound to a NAD.
B. It defines a wide variety of authorization actions, including “reauthenticate.”
C. It defines the format for a Change of Authorization packet.
D. It defines a DM.
E. It specifies that TCP port 3799 be used for transport of Change of Authorization packets.
Answer: ACD
QUESTION 264
How does a wireless association flood attack create a DoS?
A. It sends a high-power RF pulse that can damage the internals of the AP
B. It spoofs disassociation frames from the access point.
C. It uses a brute force attack to crack the encryption.
D. It exhausts the access client association table.
Answer: D
Explanation:
This question is very confusing because it doesn’t state if it is DoS against access point or the client. If DoS is run against the AP then the right answer is D. Check the section “Denial of Service attacks against access points”
http://www.cisco.com/c/en/us/td/docs/wireless/mse/3350/7-2/wIPS_Configuration/Guide/wIPS_72/msecg_appA_wIPS.html
If the attack targets wireless clients then the correct answer is B. Check the section “Denial of service attacks against client station” in the same document
QUESTION 265
Refer to the exhibit, you have configured two route-map instances on R1 which passes traffic from switch 1 on both VLAN 1 and VLAN 2.
You wish to ensure that the first route-map instance matches packets from VLAN 1 and sets next hop to 3232::2/128.
The second route-map instance matches packets from VLAN 2 and sets the next hop to 3232::3/128.
What feature can you implement on R1 to make this configuration possible?
A. PBR
B. BGP local-preference
C. BGP next-hop
D. VSSP
E. GLBP
Answer: A
Explanation:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_pi/configuration/xe-3s/iri-xe-3s-book/ip6-pbr-xe.html
QUESTION 266
What are two feature that can be used to drop incoming traffic with spoofed bogon address? (Choose two)
A. Unicast RPF
B. ingress ACLs
C. flexible ACLs
D. egress ACLs
E. reflexive ACLs
F. Source Specific Multicast
Answer: AB
QUESTION 267
Refer to the exhibit, what is the effect of the given command sequence?
A. The router telnet to the on port 2002
B. The AP console port is shut down.
C. A session is opened between the router console and the AP.
D. The router telnet to the router on port 2002.
Answer: C
QUESTION 268
Which two statements about IPsec in a NAT-enabled environment are true? (Choose two)
A. The hashes of each peer’s IP address and port number are compared to determine whether NAT-T is required
B. NAT-T is not supported when IPsec Phase 1 is set to Aggressive Mode
C. The first two messages of IPsec Phase 2 are used to determine whether the remote host supports NAT-T
D. NAT-T is not supported when IPsec Phase 1 is set to Main Mode
E. IPsec packets are encapsulated in UDP 500 or UDP 10000 packets
F. To prevent translations from expiring, NAT keepalive messages that include a payload are sent between the peers
Answer: AF
Explanation:
http://www.cisco.com/en/US/docs/ios-xml/ios/sec_conn_dplane/configuration/15-1mt/sec-ipsec-nat-transp.html#GUID-54C3D921-581F-48B8-9641-5942C19DEA1F
QUESTION 269
Which statement about the Cisco Secure ACS Solution Engine TACACS+ AV pair is true?
A. AV pairs are only required to be enabled on Cisco Secure ACS for successful implementation.
B. The Cisco Secure ACS Solution Engine does not support accounting AV pairs.
C. AV pairs are only string values.
D. AV pairs are of two types: string and integer.
Answer: C
QUESTION 270
Which statement about Sarbanes-Oxley (SOX) is true?
A. SOX is an IEFT compliance procedure for computer systems security.
B. SOX is a US law.
C. SOX is an IEEE compliance procedure for IT management to produce audit reports.
D. SOX is a private organization that provides best practices for financial institution computer systems.
E. Section 404 of SOX is only related to IT compliance.
Answer: BE
QUESTION 271
Which Cisco ASA firewall mode supports ASDM one-time-password authentication using RSA SecurID?
A. Network translation mode
B. Single-context routed mode
C. Multiple-context mode
D. Transparent mode
Answer: B
QUESTION 272
What protocol is responsible for issuing certificates?
A. SCEP
B. DTLS
C. ESP
D. AH
E. GET
Answer: A
QUESTION 273
Which category to protocol mapping for NBAR is correct?
A. Category: internet
Protocol: FTP, HTTP, TFTP
B. Category: Network management
Protocol: ICMP, SNMP, SSH, telent
C. Category: network mail services
Protocol: mapi, pop3, smtp
D. Category: Enterprise applications
Protocal: citrixICA, PCAnywhere, SAP, IMAP
Answer: A
QUESTION 274
You have discovered unwanted device with MAC address 001c.0f12.badd on port FastEthernet1/1 on VLAN 4.
What command or command sequence can you enter on the switch to prevent the MAC address from passing traffic on VLAN 4?
A.
B.
C.
D.
E.
Answer: E
Explanation:
In order for VLAN access-map to drop a specific MAC address it has to use access-list with permit entry.
http://www.cisco.com/c/en/us/support/docs/switches/catalyst-3550-series-switches/64844-mac-acl-block-arp.html
QUESTION 275
Which two options are benefits the Cisco ASA Identity Firewall?(Choose two)
A. It supports an AD server module to verify identity data.
B. It can operate completely independently of other servers.
C. It decouples security policies from the network topology.
D. It can apply security policies on an individual user or user-group basis
E. It can identify threats quickly based on their URLs.
Answer: CD
About 90% questions are from this 400-251 dump. One thing you need to pay attention is the questions are rephrased in the real 400-251 exam. And btw selections are jumbled so you must remember the answer itself not the letter of choice.
400-251 new questions on Google Drive: https://drive.google.com/open?id=0B3Syig5i8gpDMERESjlYcVlZNWs
2017 Cisco 400-251 exam dumps (All 470 Q&As) from Lead2pass:
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