单选题Which term describes a spanning-tree network that has all switch ports in either the blocking or forwarding state?（）A redundantB spannedC provisionedD converged

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第2题：

In the network， VLAN Trunking Protocol （VTP） is running with a domain name of R1. VLANs 1， 2，3， 4， 5， 10， 20 are active on the network. Suddenly the whole network goes down. No traffic isbeing passed on VLANs 2， 3， 4， 5， 10， 20. However， traffic passes on VLAN 1 and indicates allswitches are operational. Right before the network problem occurred； a switch named SW13 wastaken out of the lab and added to the network. What three configuration issues on SW13 could becausing the network outage？（）

• A、SW13 has a higher VTP configuration revision than the current VTP revision
• B、SW13 is configured as a VTP server with a different domain name
• C、SW13 is configured as a VTP server with the domain name R1
• D、SW13 has a lower VTP configuration revision than the current VTP revision
• E、SW13 is not configured to participate in VTP
• F、SW13 is configured with only VLAN1

第3题：

Which statement describes a spanning-tree network that has converged?（）

• A、All switch and bridge ports are in the forwarding state.
• B、All switch and bridge ports are assigned as either root or designated ports.
• C、All switch and bridge ports are in either the forwarding or blocking state.
• D、All switch and bridge ports are either blocking or looping.

第4题：

Network A has a spanning-tree problem in which the traffic is selecting a longer path. How is the path cost calculated？（）

• A、number of hops
• B、priority of the bridge
• C、interface bandwidth
• D、interface delay
• E、None of the above

第5题：

An etwork administrator has enabled OSPF across an NBMA network and has issued the command ip ospf network nonbroadcast. Given those facts, which two statements are true?（）

• A、Interfaces will automatically detect and build adjacencies with neighbor routers
• B、DR and BDR elections will not occur
• C、DR and BDR elections will occur
• D、The neighbor command is required to build adjacencies
• E、All routers must be configured in a fully meshed topology with all other routers

第6题：

If the router R1 has a packet with a destination address 192.168.1.255, what describes the operation of the network（）。

• A、R1 will forward the packet out all interfaces.
• B、R1 will drop this packet because this it is not a valid IP address.
• C、As R1 forwards the frame containing this packet, Sw-A will add 192.168.1.255 to its MAC table.
• D、R1 will encapsulate the packet in a frame with a destination MAC address of FF-FF-FF-FF-FF-FF
• E、As R1 forwards the frame containing this packet, Sw-A will forward it to the device assigned the IP address of 192.168.1.255.

第7题：

Company.com wishes to use IPAT via IP replacement in a two-node mutual cluster. Each node  has two Ethernet 10/100/1000 adapters. Throughout the planning session，the customer has asked questions about subnet and VLAN requirements for the intended network topology.  Which of the following best describes the network requirements？（）  

• A、 The service IP addresses must be on a separate subnet and VLAN.
• B、 The non-service and service IP addresses must be on the same subnet and on the same VLAN.
• C、 All interfaces on a node must be in different subnets. All subnets must be on the same VLAN. 
• D、 One non-service and one service IP address must be on the same logical subnet. All interfaces must be on the same VLAN.

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第13题：

A network administrator needs to verify that switch interface 0/5 has been assigned to the Sales VLA.N. Which command will accomplish this task?（）

• A、Show vlan
• B、Show mac-address-table
• C、Show vtp status
• D、show spanning-tree root
• E、show ip interface brief

第14题：

Which term describes a spanning-tree network that has all switch ports in either the blocking or forwardingstate？ （）

• A、redundant
• B、spanned
• C、provisioned
• D、converged

第15题：

Which of the following BEST describes a hub?（）

• A、Determines the best route to transmit data
• B、Inspects traffic and accepts or declines transmission
• C、Broadcasts data to specific network devices
• D、Broadcasts data to all network devices

第16题：

Which term describes a spanning-tree network that has all switch ports in either the blocking or forwarding state?（）

• A、redundant
• B、spanned
• C、provisioned
• D、converged

第17题：

Which one of the statements below correctly describes the Virtual Router Redundancy Protocol  （VRRP），  which is being used in the Company network to provide redundancy？（）

• A、 A VRRP group has one active and one or more standby virtual routers.
• B、 A VRRP group has one master and one or more backup virtual routers.
• C、 A VRRP group has one master and one redundant virtual router.
• D、 None of the other alternatives apply

第18题：

Which statement describes the primary difference between the WX and WXC platforms?（）

• A、The WX platform has built-in hard drives.
• B、The WXC platform has no built-in hard drives.
• C、The WX platform uses Network Sequence Caching technology.
• D、The WXC platform uses the Network Sequence Caching technology

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