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

相似题目

• Which two protocols are used by bridges and/or switches to prevent loops in a layer 2 network?（）

  A . 802.1d B . VTP C . 802.1q D . STP E . SAP

  查看最佳答案

• One of your customers has deployed a Layer 3 gateway in the untrusted network. Which gateway mode is appropriate for this customer?（）

  A . Virtual Gateway B . Real-IP Gateway C . NAT Gateway D . Central Gateway

  查看最佳答案

• The Company security administrator is concerned with layer 2 network attacks.  Which two  statements about these attacks are true？ （）

  A .  ARP spoofing attacks are attempts to redirect traffic to an attacking host by encapsulating a  false 802.1Q header on a frame and causing traffic to be delivered to the wrong VLAN. B .  ARP spoofing attacks are attempts to redirect traffic to an attacking host by sending an ARP  message with a forged identity to a transmitting host. C .  MAC address flooding is an attempt to force a switch to send all information out every port byoverloading the MAC address table. D .  ARP spoofing attacks are attempts to redirect traffic to an attacking host by sending an ARP  packet that contains the forged address of the next hop router. E .  MAC address flooding is an attempt to redirect traffic to a single port by associating that port  with all MAC addresses in the VLAN.

  查看最佳答案

• What can a network administrator utilize by using PPP Layer 2 encapsulation (Choose three.) （）。

  A . VLAN support B . compression C . authentication D . sliding windows E . multilink support F . quality of service

  查看最佳答案

• ou are the Cisco Network Designer in Cisco.com. Which of these practices should you followwhen designing a Layer 3 routing protocol？（）

  A .  Never peer on transit links. B .  Build squares for deterministic convergence. C .  Build inverted U designs for deterministic convergence. D .  Summarize routes at the distribution to the core to limit EIGRP queries or OSPF LSA propagation.

  查看最佳答案

• A network administrator creates a layer 3 EtherChannel, bundling four interfaces into channel group 1. On what interface is the IP address configured?（）

  A . the port-channel 1 interface B . the highest number member interface C . all member interfaces D . the lowest number member interface

  查看最佳答案

• You need make configuration changes to an existing layer 3 switch in the Company network. On a  multilayer Catalyst switch，  which interface command is used to convert a Layer 3 interface to a  Layer 2 interface？（）

  A .  switchport access vlan vlan-id B .  switchport C .  switchport mode access D .  no switchport E .  None of the other alternatives apply

  查看最佳答案

• One of your customers has deployed a Layer 3 gateway in the untrusted network. Which gateway mode is appropriate for this customer？（）

  A .  Virtual Gateway B .  Real-IP Gateway C .  NAT Gateway D .  Central Gateway

  查看最佳答案

• 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

  查看最佳答案

• FabricPath brings the benefits of routing protocols to layer 2 network Ethernet environments. What are the advantages of using FabricPath technology？ （）   

  A .  FabricPath provides MAC address scalability with conversational learning B .  Loop mitigation with TTL in the frame field C .  STPl independence D .  10 Gbps bandwidth E .  Layer 2 extensions between data center

  查看最佳答案

• 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.

  查看最佳答案

• At Layer 2 of the OSI model, which component connects a host to the network media?（）

  A . Hub B . Switch C . Bridge D . NIC E . Transceiver

  查看最佳答案

• The TCP/IP network model differs from the more popular OSI model. Which of the layers below belong to the TCP/IP model?（）

  A . application layer B . session layer C . transport layer D . internet layer E . network layer F . data link layer G . physical layer

  查看最佳答案

• Which of the following layers of the TCP/IP model most closely corresponds to the network layer of the OSI model?（）

  A . Application B . Internet C . Transport D . Network E . Data Link

  查看最佳答案

• What are the characteristics of the process of documenting the layers of an existing network? （）

  A . begins with gathering organizational input that may be inaccurate B . begins with gathering organizational input that does not need to be supplemented by a network audit C . requires a network audit to support some upgrade decisions D . requires a network audit to support any network restructuring E . provides reliable input for verifying network consistency F . does not provide reliable input for designing change

  查看最佳答案

• What layer of the TMN （telecommunications management network） model does CTM fit into？（）

  A . Network management layer B . Element management layer C . Business management layer D . Network element layer

  查看最佳答案

• What can a network administrator utilize by using PPP Layer 2 encapsulation? (Choose three.)（）

  A . VLAN support B . compression C . authentication D . sliding windows E . multilink support F . quality of service

  查看最佳答案

• （）是NS（GB.Network Service Layer）的功能.

  A . LLC.PDU的传输 B . 对NSE中多个NS-VCs的上下链路的共享 C . 对NS-VC的管理 D . 传输BSSGPPDU

  查看最佳答案

• How is network layer addressing accomplished in the OSI protocol suite?（）

  A . Internet Protocol address B . Media Access Control address C . Packet Layer Proto col address D . Network Service Access Point address E . Authority and Format Identifier addre

  查看最佳答案

• Compared to the traditional Layer 2 and Layer 3 system, how does the Cisco Catalyst 6500 VSS 1440simplify the network? （）

  A . provides loop-free technology B . manages additional routing peers C . provides HSRP/VRRP D . manages two nodes and configuratio

  查看最佳答案

• 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

  查看最佳答案

• What benefit results from implementation of Layer 3 switching versus Layer 2 switching in a fully meshed campus network？（）

  A . ease of IP address assignment versus use of external routers B . redundancy from trunking between distribution layer switches C . provides first-hop redundancy to clients D . allows inter-VLAN communication without requiring complexity of routing protocol

  查看最佳答案

• Together with the network layer,the transport layer is the heart of the protocol （）.The network layer provides end-to-end （） delivery using datagrams or virtual circuits.The transport layer builds on

  A．connection B． terminal C． source D． destination

  查看最佳答案

• One of the following network devices that works at the physical layer is（）

  A．Hub B．Bridge C．Router D．Ethernet Switch

  查看最佳答案