NSAPI的全称为Network layer Service Access Point Identifier。（）

第1题：

第2题：

When you design QoS on CE for an MPLS Layer 2 VPN， which three things should be considered？（）

• A、Layer 2 access link QoS design
• B、enterprise-to-service-provider mapping models
• C、Layer 3 link access QoS design
• D、service provider service level agreements
• E、Layer 2 link access load balancing

第3题：

第4题：

You work as a network technician at Company. Your boss， Ms.， is interested  LWAPP （Lightweight Access Point Protocol）. In particular she wants to know which type of  activities this protocol defines.  What should you tell her？ （）

• A、 Layer 3 addressing and distribution
• B、 SNMP monitoring services
• C、 Access point certification and software control
• D、 Packet encapsulation， fragmentation， and formatting
• E、 Compression and Layer 3 address mapping
• F、 User behaviors

第5题：

You need to determine the correct wireless LAN topology for use in the Company network.  Which  three statements are true about the various WLAN topologies？（）

• A、 In ad hoc mode， the Independent Basic Service Set （IBSS） is a framework in which mobile  clients connect directly without an intermediate access point.
• B、 In Infrastructure mode， the Basic Service Set （BSS） is a framework in which mobile clients use  a single access point for connecting to each other or to wired network resources.
• C、 In Infrastructure mode， the Extended Services Set （ESS） is a framework in which two or more  Basic Service Sets are connected by a common distribution system （DS）.
• D、 In Infrastructure mode， the Independent Basic Service Setet （IBSS） is a framework in which  mobile clients connect directly without an intermediate access point.
• E、 In ad hoc mode， the Basic Service Set （BSS） is a framework in which mobile clients use a  single AP for connecting to each other or to wired network resources.
• F、 In ad hoc mode， the Extended Services Set （ESS） is a framework in which two or more Basic  Service Sets are connected by a common distribution system （DS）

第6题：

第7题：

Which unique characteristics of the Data Center Aggregation layer must be considered by an Enterprise Campus designer？（）

• A、 Layer 3 routing between the Access and Aggregation layers facilities the ability to span VLANsacross multiple access switches， which is a requirement for many server virtualization andclustering technologies.
• B、 “East-west” server-to-server traffic can travel between aggregation modules by way of the core，but backup and replication traffic typically remains within an aggregation module.
• C、 Load balancing， firewall service， and other network service are commonly integrated by the useof service modules that are inserted in the aggregation switched.
• D、 Virtualization tools allow a cost effective approach for redundancy in the network design byusing two or four VDCs from the same physical switch.

第8题：

第9题：

NSAPI的全称为Network layer Service Access Point Identifier。（）

第10题：

In the Company wireless LAN，  what is the function of the Service Set Identifier （SSID）？（）

• A、 The SSID must match on both the Company client and the Company access point and provides  MAC Address Authentication to authenticate the client to the access point.
• B、 The SSID should be configured on the Company client site only and provides data-privacy  functions and authentication to the access point.
• C、 The SSID must match on both the Company client and the Company access point and provides encryption keys for authentication to the access point.
• D、 The SSID must match on both the Company client and the Company access point. The SSID is  advertised in plain-text in the access point beacon messages.  
• E、 None of the other alternatives apply