单选题Enabling jumbo frame support on a Cisco Nexus 5500 Switch can be done through which method？（）Achanging the default policy map from a default MTU of 1500 to 9216Busing the command system jumbomtu 9216Cusing the command interface MTU 9216Dconfiguring the

第1题：

When creating a role in a Cisco Nexus 7000 Series Switch， rules are used to define the type of operations that a role will allow the user to perform.  Which two of these parameters cannot be applied as a rule？ （） 

• A、 port-profile
• B、 command
• C、 access-list
• D、 feature-group
• E、 OID

第2题：

Enabling jumbo frame support on a Cisco Nexus 5500 Switch can be done through which method？（）   

• A、 changing the default policy map from a default MTU of 1500 to 9216
• B、 using the command system jumbomtu 9216
• C、 using the command interface MTU 9216
• D、 configuring the default Ethernet system class to an MTU of 9216 with a new network QoS policy map

第3题：

正确答案：A
A 解析：Explanation:
How Does the Switch Find Host MACs?
Let's use the diagram below to help us understand how address learning process takes place.


Let's assume that we have just powered on the switch. It has nothing in its MAC table. We connect the cables from the hosts on the switch interfaces as shown in the diagram. Host A initiates a connection towards Host D, and the following takes place:
1. Host A (interface fe0/0) sends a frame. to Host D (MAC address:0000.43c5.334c).

2. The switch inspects the Source Address in the frame. and notes in its table the MAC address of Host A along with the Interface number from which the frame. originated.

3. The switch inspects the Destination Address in the frame. Since it does not have Hosts D MAC address in its table, it constructs a broadcast frame. and forwards out all interfaces except the interface from where the original frame. arrived.

4. Host D identifies itself as the expected recipient and responds back to Host A. The switch receives the respond frame. on interface fe0/11 and places the SA in its table along with the interface number where the frame. came from.

5. From now on, further communication between the two hosts will be switched to the appropriate interfaces based on the MAC tables entries.

This process takes place every time a new host is attached on the switch and initiates traffic. The switch tries to keep its MAC table up-to-date, therefore if some hosts do not initiate traffic for a certain amount of time, the switch removes them from its table and reinserts them when they begin sending traffic.

第4题：

Which attribute is used to pass the user role back to the Nexus when remote AAA is enabled？（）

• A、 Cisco AV-pair
• B、 TACACS+ or RADIUS ack frame role attribute
• C、 DH-CHAP challenge attribute
• D、 privilege level attribute

第5题：

Which three capabilities make the Cisco Nexus 7010 switch an effective solution for the data center core？ （）

• A、 virtualization
• B、 unified I/O
• C、 support for 48-port Gb/s line card
• D、 support for Data Center Service Modules
• E、 high performance
• F、 high availability

第6题：

Which Cisco product performs virtualized Ethernet switching within a VMware ESX host?（）

• A、Nexus l000
• B、Nexus 2000
• C、Nexus 5000
• D、Nexus 7000

第7题：

Which three statements best describe multicast operation on Cisco Nexus switches in a data center？（）

• A、 Cisco NX-OS Software does not support PIM dense mode.
• B、 The command ip multicast-routing must be enabled in Cisco NX-OS Software before any multicast configuration is possible on the switch.
• C、 PIM CLI configuration and verification commands are not available until you enable the PIM feature with the feature pim command.
• D、 Cisco NX-OS Software supports multicast routing per Layer 3 VRF instance.
• E、 The default PIM operational mode on the Cisco Nexus 7000 switch is SSM.

第8题：

Which of following VLAN frame encapsulation types are configurable on a Cisco switch?（）

• A、VTP
• B、802.1Q
• C、LLC
• D、ISL
• E、CDP
• F、PAP

第9题：

If an enterprise customer required A switch for their branch office access layer, which family of switches would the customer likely choose from?（）

• A、Cisco SFS 3000/7000
• B、Cisco Catalyst 2000 and 3000
• C、Cisco Catalyst 4000 and 6000
• D、Cisco Nexus

第10题：

A cisco aironet 1020 controller-based access point has been connected to a catalyst 3550-24 pwr switch. however， when it is powered up， the access point fails. What has caused this problem？（）

• A、access point does not support 802.11h
• B、incorrect switch power supply
• C、switch port is not enabled
• D、switch does not support 802.3af
• E、access point has not been initialized with the primary controller