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


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1.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

2.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.

3.多項(xiàng)選擇題Which two of these are recommended practices with trunks? ()

A. use ISL encapsulation
B. use 802.1q encapsulation
C. set ISL to desirable and auto with encapsulation negotiate to support ILS protocol negotiation
D. use VTP server mode to support dynamic propagation of VLAN information across the network
E. set DTP to desirable and desirable with encapsulation negotiate to support DTP protocol negotiation.

4.單項(xiàng)選擇題Why is STP required when VLANs span access layer switches?()

A. to ensure a loop-free topology
B. to protect against user-side loops
C. in order to support business applications
D. because of the risk of lost connectivity without STP
E. for the most deterministic and highly available network topology

5.單項(xiàng)選擇題When is a first-hop redundancy protocol needed in the distribution layer?()

A. when HSRP is not supported by the design
B. when multiple vendor devices need to be supported
C. when preempt tuning of the default gateway is needed
D. when a robust method of backing up the default gateway is needed
E. when the design implements Layer 2 between the access switch and the distribution switch
F. when the design implements Layer 3 between the access switch and the distribution switch

6.單項(xiàng)選擇題Which of these recommended designs provides the highest availability?()

A. map the Layer 2 VLAN number to the Layer 3 subnet
B. control route propagation to edge switches using distribute lists
C. use a Layer 2 distribution interconnection link with HSRP or GLBP
D. use a Layer 3 distribution interconnection link with HSRP or GLBP
E. use equal-cost Layer 3 load balancing on all links to limit the scope of queries in EIGRP

7.單項(xiàng)選擇題Which of these is a correct description of SSO?()

A. It will only become active after a software failure.
B. It will only become active after a hardware failure.
C. It requires that Cisco NSF be enabled in order to work successfully.
D. It synchronizes the MAC, FIB, and adjacency tables between Active and Standby Route Processors.

8.單項(xiàng)選擇題Which of these statements is correct regarding SSO and Cisco NSF?()

A. Utilizing Cisco NSF in Layer 2 environments can reduce outages to one to three seconds.
B. Utilizing SSO in Layer 3 environments can reduce outages to one to three seconds.
C. Distribution switches are single points of failure causing outages for the end devices.
D. Utilizing Cisco NSF and SSO in a Layer 2 environment can reduce outages to less than one second.
E. NSF and SSO with redundant supervisors have the most impact on outages at the access layer.

9.單項(xiàng)選擇題To which switch or switches should you provide redundant links in order to achieve high availability with reliable fast convergence in the enterprise campus?()

A. to a core switch running Cisco NSF and SSO from redundant distribution switches connected with a Layer 2 link
B. to a core switch running Cisco NSF and SSO from redundant distribution switches connected with a Layer 3 link
C. to two core switches from redundant distribution switches connected with a Layer 2 link
D. to two core switches from redundant distribution switches connected with a Layer 3 link
E. to two core switches running Cisco NSF and SSO from two redundant distribution switches running Cisco NSF and SSO

10.單項(xiàng)選擇題When a router has to make a rate transition from LAN to WAN, what type of congestion needs should be considered in the network design?()

A. RX-queue deferred
B. TX-queue deferred
C. RX-queue saturation
D. TX-queue saturation
E. RX-queue starvation
F. TX-queue starvation