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Exam Code: 640-554
Exam Name: Implementing Cisco IOS Network Security (IINS v2.0)
Certification Provider: Cisco
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QUESTION 281
Which address block is reserved for locally assigned unique local addresses?
A. 2002::/16
B. FD00::/8
C. 2001::/32
D. FB00::/8
Answer: B
QUESTION 282
What is a possible reason for the error message?
Router(config)#aaa server?% Unrecognized command
A. The command syntax requires a space after the word “server”
B. The command is invalid on the target device
C. The router is already running the latest operating system
D. The router is a new device on which the aaa new-model command must be applied before continuing
Answer: D
QUESTION 283
Which statements about smart tunnels on a Cisco firewall are true? (Choose two.)
A. Smart tunnels can be used by clients that do not have administrator privileges
B. Smart tunnels support all operating systems
C. Smart tunnels offer better performance than port forwarding
D. Smart tunnels require the client to have the application installed locally
Answer: AD
Explanation:
Smart Tunnel is also used to provide remote access to web applications that are difficult to rewrite, such as proprietary, non-standards-based Java, Java Script, or Flash animations.
Smart Tunnel also supports Single Sign-On to web applications that require either form-based POST parameters, http basic, FTP, or NTLM authentication
Smart Tunnel can also co-exist with a Full-Tunnel VPN Client. For example, an employee can connect to the company network by using Full-Tunnel VPN Client, while simultaneously connecting to a vendor network by using Smart Tunnel.
Smart Tunnel Advantages over Port-Forwarding, Plug-ins
Smart Tunnel offers better performance than browser plug-ins.
Port forwarding is the legacy technology for supporting TCP-based applications over a Clientless SSL VPN connection. Unlike port forwarding, Smart Tunnel simplifies the user experience by not requiring the user connection of the local application to the local port.
Smart Tunnel does not require users to have administrator privileges.
Smart Tunnel does not require the administrator to know application port numbers in advance.
QUESTION 284
Which option describes information that must be considered when you apply an access list to a physical interface?
A. Protocol used for filtering
B. Direction of the access class
C. Direction of the access group
D. Direction of the access list
Answer: C
QUESTION 285
Which source port does IKE use when NAT has been detected between two VPN gateways?
A. TCP 4500
B. TCP 500
C. UDP 4500
D. UDP 500
Answer: C
QUESTION 286
Which of the following are features of IPsec transport mode? (Choose three.)
A. IPsec transport mode is used between end stations
B. IPsec transport mode is used between gateways
C. IPsec transport mode supports multicast
D. IPsec transport mode supports unicast
E. IPsec transport mode encrypts only the payload
F. IPsec transport mode encrypts the entire packet
Answer: ADE
Explanation:
IPSec Transport Mode
IPSec Transport mode is used for end-to-end communications, for example, for communication between a client and a server or between a workstation and a gateway (if the gateway is being treated as a host). A good example would be an encrypted Telnet or Remote Desktop session from a workstation to a server.
Transport mode provides the protection of our data, also known as IP Payload, and consists of TCP/UDP header + Data, through an AH or ESP header. The payload is encapsulated by the IPSec headers and trailers. The original IP headers remain intact, except that the IP protocol field is changed to ESP (50) or AH (51), and the original protocol value is saved in the IPsec trailer to be restored when the packet is decrypted.
IPSec transport mode is usually used when another tunneling protocol (like GRE) is used to first encapsulate the IP data packet, then IPSec is used to protect the GRE tunnel packets. IPSec protects the GRE tunnel traffic in transport mode.
QUESTION 287
Which command causes a Layer 2 switch interface to operate as a Layer 3 interface?
A. no switchport nonnegotiate
B. switchport
C. no switchport mode dynamic auto
D. no switchport
Answer: D
QUESTION 288
Which command verifies phase 1 of an IPsec VPN on a Cisco router?
A. show crypto map
B. show crypto ipsec sa
C. show crypto isakmp sa
D. show crypto engine connection active
Answer: C
Explanation:
show crypto ipsec sa verifies Phase 2 of the tunnel.
QUESTION 289
What is the purpose of a honeypot IPS?
A. To create customized policies
B. To detect unknown attacks
C. To normalize streams
D. To collect information about attacks
Answer: D
QUESTION 290
Which type of firewall can act on the behalf of the end device?
A. Stateful packet
B. Application
C. Packet
D. Proxy
Answer: D
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