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2018 Mar Cisco Official New Released 300-320
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Designing Cisco Network Service Architectures
Question No: 21
Which two VPN solutions extend the routing capabilities of basic IPsec VPNs? (Choose two.)
-
GRE
-
NVI
-
DES
-
VTI
-
AES
Answer: A,D
Question No: 22
A e-commerce network has many devices that often need to be upgraded on a regular
basis.
What technology will ensure IP packets continue to be forwarded even during a device failover?
-
stateful switchover
-
nonstop forwarding
-
route processor redundancy
-
optimized edge routing
-
enhanced object tracking
Answer: B
Question No: 23
Which three Layer 2 access designs have all of their uplinks in an active state? (Choose three.)
-
Flex Links
-
loop-free U
-
looped square
-
looped triangle
-
loop-free inverted U
Answer: B,C,E
Question No: 24
Which two protocols are used for high availability in enterprise networks? (Choose two.)
-
BGP
-
GLBP
-
RSTP
-
VRRP
-
OSPF
Answer: B,D
Question No: 25
A network engineer is building a LAN design that includes Cisco NAC. What two characteristics of an out-ofband NAC deployment are important to consider when evaluating it for the design? (Choose two.)
-
supported by a limited number of switch models
-
never in-line with user traffic
-
aggregate client traffic is constrained to NAC server port speed
-
recommended if sharing ports between IP phones and PCs
-
supports real IP gateway (routed mode)
Answer: A,D Explanation:
https://www.safaribooksonline.com/library/view/foundation-learning- guide/9780132652933/ch08.html
quot;Out-of-band traffic flow is supported with the Cisco NAS connected to most common Cisco switches with
recent software releases.quot;
https://www.cisco.com/c/en/us/td/docs/security/nac/appliance/configuration_guide/47/cas/4 7cas-book/s_deploy.html
quot;OOB Virtual Gateway
鈥ecommended configuration if sharing ports between IP phones and PCs.quot;
Question No: 26
Which three statements about Network Attached Storage are correct? (Choose three.)
-
Data is accessed using NFS or CIFS.
-
Data is accessed at the block level.
-
NAS is referred to as captive storage.
-
Storage devices can be shared between servers.
-
A NAS implementation is not as fast as a DAS implementation.
Answer: A,D,E
Question No: 27
Which Cisco NAC Appliance design is the most scalable in large Layer 2-to-distribution implementation?
-
Layer 2 out-of-band
-
Layer 2 in-band
-
Layer 3 out-of-band
-
Layer 3 in-band
Answer: B Explanation:
https://www.safaribooksonline.com/library/view/foundation-learning- guide/9780132652933/ch08.html
quot;Layer 2 In-Band Designs The Layer 2 in-band topology is the most common deployment option.
[…]
This is the most scalable design in large L2-to-distribution environments, because this design can be
transparently implemented in the existing network supporting multiple access layer switches. It supports all network infrastructure equipment. The Cisco NAS supports per- user ACLs.quot;
Question No: 28
A campus network in a switch block design requires redundant distribution switches, load sharing across uplinks, a loop-free topology, and only one gateway IP address per VLAN. Which switching technology meets all of the requirements?
-
HSRP
-
VSS
-
Spanning Tree Protocol
-
EtherChannel
Answer: B
Question No: 29
Which three authentication services are supported by Cisco NAC Appliance? (Choose three.)
-
RADIUS
-
LDAP
-
Kerberos
-
TACACS
-
local
-
SNMP
Answer: A,B,C Explanation:
https://www.cisco.com/c/en/us/td/docs/security/nac/appliance/configuration_guide/47/cam/ 47cam-book/m_auth.html
quot;Working with Existing Backend Authentication Servers
When working with existing backend authentication servers, Cisco supports the following authentication protocol types:
鈥erberos
鈥ADIUS (Remote Authentication Dial-In User Service)
鈥indows NT (NTLM Auth Server)
鈥DAP (Lightweight Directory Access Protocol)quot;
Question No: 30
Which of these Layer 2 access designs does not support VLAN extensions?
-
FlexLinks
-
loop-free U
-
looped square
-
looped triangle
-
loop-free inverted U
Answer: B
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