You are the network consultant from Cisco.com. Please point out the reason that STP required when VLANs do not span access layer switches.()A. ensure a loop-free topologyB. protect against user-side loopsC. support business applicationsD. risk of lost con

第1题：

You are the network administrator of a Layer 3 switched network. Users in one VLAN are complaining that access to the server VLAN is very slow from time to time. Traffic in the local VLAN works without any issue， and users in other VLANs do not have any complaint to reach the server VLAN. What is most likely the cause of this issue？（）

• A、routing issue
• B、denial-of-service attack
• C、MAC flooding
• D、spanning-tree recalculation
• E、Layer 2 loop
• F、ARP spoofing attack

第2题：

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

第3题：

Which statement about data center access layer design modes is correct?（）

• A、The access layer is the first oversubscription point in a data center design.
• B、When using a Layer 2 loop-free design, VLANs are extended into the aggregation layer.
• C、When using a Layer 2 looped design, VLANs are not extended into the aggregation layer.
• D、When using a Layer 3 design,stateful services requiring Layer 2 connectivity are provisioned from the aggregation layer.
• E、The data center access layer provides the physical-level connections to the server resources and only operates at Layer 3.

第4题：

If it is properly deployed， a controller-based access point is capable of monitoring all vlans on a network when you select which of the following modes from the ap mode drop-down menu on the controller？（）

• A、mirror
• B、rogue detector
• C、sniffer
• D、monitor

第5题：

You are the Cisco Network Designer in Cisco.com. You are designing an e-Commerce module, which routing statement is correct?（）

• A、Routing is mostly static.
• B、Hardcoded IP addresses are used to support failover.
• C、Inbound servers use the CSM or ACE as the default gateway.
• D、VLANs between the access layer switches are used for FHRP protocols.

第6题：

You are the Cisco Network Designer in Cisco.com. Which two statements about Layer 3 access designs are correct?（）

• A、Convergence time is fractionally slower than STP.
• B、Broadcast and fault domains are increased.
• C、IP address space is difficult to manage.
• D、Fast uplink convergence is supported for failover and fallback.

第7题：

Which statement about data center access layer design modes is correct？（）

• A、 The access layer is the first oversubscription point in a data center design.
• B、 When using a Layer 2 loop-free design， VLANs are extended into the aggregation layer.
• C、 When using a Layer 2 looped design， VLANs are not extended into the aggregation layer.
• D、 When using a Layer 3 design， stateful services requiring Layer 2 connectivity are provisionedfrom the aggregation layer.
• E、 The data center access layer provides the physical-level connections to the server resourcesand only operates at Layer 3.

第8题：

Your network contains a wireless access point. You have a computer that runs Windows 7. The computerconnects to the wireless access point. You disable Service Set Identifier (SSID) broadcasts on the wirelessaccess point. You discover that you are now unable to connect to the wireless access point from theWindows 7 computer. You need to ensure that the computer can connect to the wireless access point. What should you do?（）

• A、From Credential Manager， modify the generic credentials.
• B、From Credential Manager， modify the Windows credentials.
• C、From Network and Sharing Center， turn on Network discovery.
• D、From Network and Sharing Center， modify the wireless network connection settings.

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第13题：

You are the Cisco Network Designer in Cisco.com. Which layer NAS operating mode are ACLfiltering and bandwidth throttling only provided during posture assessment？（）

• A、 Layer 2
• B、 Layer 3
• C、 Layer 4
• D、 out-of-band

第14题：

You are the network consultant from passguide.com. Could you please tell customers what strategy will protect network resources and services from unauthorized actions?（）

• A、Content storage networking
• B、Network optimization
• C、Network management
• D、Network security

第15题：

You are the network consultant from Cisco.com. Please point out two statements correctly describe an IPS device（）

• A、It resembles a Layer 2 bridge.
• B、Traffic flow through the IPS resembles traffic flow through a Layer 3 router.
• C、Inline interfaces which have no IP addresses cannot be detected.
• D、Malicious packets that have been detected are allowed to pass through, but all subsequent traffic is blocked.

第16题：

You are the network consultant from Cisco.com. Please point out which Layer 2 access designs does not support VLAN extensions?（）

• A、Flex Links
• B、loop-free U
• C、looped square
• D、looped triangle

第17题：

While troubleshooting a connectivity problem on the network, you issue the ping command from your PC command prompt, but the output shows "request times out."At which OSI layer is this problem associated with?（）

• A、The data link layer
• B、The application layer
• C、The access layer
• D、The session layer
• E、The network layer

第18题：

You need to design the VLAN scheme for the Company network. Which two statements are true  about best practices in VLAN design？（）

• A、Routing should occur at the access layer ifvoice VLANs are utilized. Otherwise， routing should occur at the distribution layer.
• B、Routing should always be performed at the distribution layer.
• C、VLANs should be localized to a switch.
• D、VLANs should be localized to a single switch unlessvoice VLANs are being utilized.
• E、Routing should not be performed between VLANs located on separate switches.

第19题：

You have a computer that runs Windows XP Professional. The computer has an 802. 11g wireless network card. You have a wireless access point that is secured by using WiFi Protected Access (WPA). The service set identifier (SSID) of the wireless access point does not broadcast. You need to establish a wireless connection to the wireless access point. What should you do?（） 

• A、From the Device Manager, open the wireless network adapter properties and click Advanced. 
• B、From the Device Manager, right-click the wireless network adapter and click Scan for hardware changes. 
• C、From the Wireless Network Connection Properties, select View Wireless Networks. 
• D、From the Wireless Network Connection Properties, click Change Advanced Settings. From the Wireless Networks tab, select Add a preferred network. 

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