單項(xiàng)選擇題To which of these does IP multicast send packets?()

A. a single host
B. a subset of hosts
C. all hosts sequentially
D. all hosts simultaneously


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1.單項(xiàng)選擇題Which of these ports does syslog use to send messages to a syslog server?()

A.TCP502
B.TCP514
C.TCP520
D.UDP502
E.UDP514
F.UDP520

2.單項(xiàng)選擇題Which of these is a benefit of ESM?()

A. supports multiple MIBs
B. includesNetFlow, NBAR, and IP SLA software subsystems
C. includesNetFlow, syslog, and IP SLA software subsystems
D. includes a predefined framework for filtering and correlating messages
E. supports two logging processes so output can be sent in standard and ESM format

3.單項(xiàng)選擇題How does ERS use the VLAN tag?()

A. to provide service internetworking
B. to support transparency for Layer 2 frames
C. as a connection identifier to indicate destination
D. as a mapping to the DLCI in service internetworking
E. to provide a trunk by which all VLANs can navigate from one site to one or multiple sites

4.單項(xiàng)選擇題Your MPLS implementation is currently using internal backdoor links. What can you do to minimize the impact of having these links?()

A. use BGP as the CE-PE routing protocol
B. use OSPF as the CE-PE routing protocol
C. use EIGRP as the CE-PE routing protocol
D. use the SP to redistribute routes as external routes for OSPF and EIGRP
E. use route redistribution at each location to ensure external routes are imported into the IGP

5.多項(xiàng)選擇題Which two of these are characteristics of MPLS VPNs?()

A. Layer 3 MPLS VPNs can forward only IP packets
B. Layer 2 MPLS VPNs can forward any network protocol
C. MPLS label paths are automatically formed based on Layer 2 frames
D. Layer 3 MPLS VPNs can forward any network protocol based on Layer 2 frames
E. In Layer 2 MPLS VPNS, the service provider controls the customer Layer 3 policies

7.多項(xiàng)選擇題Which two of these are characteristics of Metro Ethernet? ()

A. class of service
B. bandwidth profiles
C. user-network interface
D. Ethernet LAN circuit attributes
E. Ethernet virtual circuit attributes

8.多項(xiàng)選擇題Which two of these Metro Internet services map to E-LAN services that are defined by the MEF?()

A. Ethernet Private Line
B. Ethernet Wire Service
C. Ethernet Relay Service
D. Ethernet Multipoint Service
E. Ethernet Relay Multipoint Service

9.多項(xiàng)選擇題Which three of these Metro Ethernet services map to E-Line services that are defined by the MEF?()

A. Ethernet Private Line
B. Ethernet Wire Service
C. Ethernet Relay Service
D. Ethernet Multipoint Service
E. Ethernet Relay Multipoint Service

10.單項(xiàng)選擇題What is the recommended practice regarding UDLD when implementing it in all fiber-optic LAN ports?()

A. Adjust the default hello timers to three seconds for aggressive mode.
B. Enable it in global mode and on every interface you need to support.
C. Enable it in global mode to support every individual fiber-optic interface.
D. Enable it to create channels containing up to eight parallel links between switches.
E. Enable it in global mode to support every individual fiber optic and Ethernet interface.

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How many channels are defined in the IEEE 802.11b DSSS channel set?()

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One of your customers wishes to use the NAS to perform DHCP functions and does not currently have a Layer 3 gateway in its production network. Which gateway mode is appropriate for this customer?()

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What amount of cell overlap ensures smooth roaming for wireless endpoints?()

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