CCNP系列認(rèn)證CCNP(642-892)章節(jié)練習(xí)(2018.11.22)

A. A device is trusted if it correctly classifies packets.
B. A device is trusted if it correctly declassifies packets.
C. The outermost trusted devices represent the trust boundary.
D. Classification and marking occur using 802.1ab QoS bits before reaching the trust boundary.  
E. Network trust boundaries are automatically configured in IOS version 12.3 and later.
F. For scalability， classification should be done as close to the edge as possible.

A.Voice VLANs are only used when connecting an IP phone and a host to distinct switch ports
B.Access ports that are configured with voice VLANs will always trust the CoS that is received from IP phones
C.Access ports that are configured with voice VLANs may or may not override the CoS value that is received from an IP phone
D.Voice VLANs are configured using the switchport voice vlan vlan-ID interface configuration command
E.Voice VLANs provide a trunking interface between an IP phone and an access port on a switch to allow traffic from multiple devices that are connected to the port
F.Enabling Voice VLAN on a switch port will automatically configure the port to trust the incoming CoS markings

A. Physically the voice network and the data network are separate.
B. The voice traffic will normally be on a different IP subnet than will the data traffic.
C. End user intervention is necessary to place the phone into the proper VLAN.
D. The same security policy should be implemented for both voice and data traffic.
E. The data VLAN must be configured as the native VLAN.

A. No virtual links are allowed.
B. The area cannot be a backbone area.
C. Redistribution is not allowed unless the packet is changed to a type 7 packet.
D. The area has no more than 10 routers.
E. No autonomous system border routers are allowed.
F. Interarea routes are suppressed.

A.0
B.1
C.10
D.20

A.The maximum number of times a double colon can replace a 16-bit segment that consists of all zeroes is two
B.The leading zeroes in any 16-bit segment do not have to be written.
C.Every 16-bit segment that consists of all zeroes can be represented with a single colon
D.The trailing zeroes in any 16-bit segment do not have to be written.
E.Any single， continuous string of one or more 16-bit segments that consists of all zeroes can be represented with a double colon
F.Two zeroes in the middle of any 16-bit segment do not have to be written

A.Voice VLANs eliminate the need for QoS configuration
B.Voice VLANs are used on trunk links to eliminate the need for QoS CoS markings
C.Voice VLANs are mainly used to reduce the number of access switch ports that are used in the network
D.Voice VLANs can be configured to forward existing CoS priorities or override them
E.Voice VLANs are mainly used between access layer switches and distribution layer switches
F.Voice VLANs can be configured on Layer 2 ports only

A.switchport priority extend trust
B.switchport priority extend cos 2
C.switchport priority extend cos 11
D.mls qos cos 2
E.mls qos cos 2 override

A.If another path advertises the 6.6.6.0/24 path and has the default local preference， that path is more preferred
B.The command neighbor send-community is configured on BGP neighbor 10.10.23.3
C.The route 10.10.23.3 is not being advertised to other BGP neighbors
D.Route 6.6.6.0/24 is learned by an IBGP peer

A.Router RAR1 will accept only route 10.10.0.0/19 from its BGP neighbor
B.Router RAR1 will send only route 10.10.0.0/19 to its BGP neighbor
C.Only traffic with a destination from 10.10.0.0/19 will be permitted
D.Only traffic going to 10.10.0.0/19 will be permitted