encapsulation封装

相似题目

• Which of the following solutions will encapsulate IPv6 packets with IPv4 headers？（）

  A . Create an IPv4 tunnel and assign the tunnel IPv6 addresses B . Create IPv4 interfaces on both ends of the network， and use either static routes or a routingprocess to direct IPv6 packets through those interfaces C . IPv6 packets cannot be encapsulated with IPv4 headers because the addresses are notcompatible D . Create IFV6 interfaces on both ends of the network， and use static routes to point the IPv4address to those interfaces E . Use an IPv6 routing protocol like OSPFv3 and assign IPv4 packets to that process F . Create an IPv4 tunnel and use the tunnel mode ipv6ip command

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• 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

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• WAN data link encapsulation types include which of the following?（）

  A . T1 B . Frame Relay C . DSL D . PPP E . ISDN F . IPX

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• Which two demonstrate encapsulation of data？ （）

  A .  Member data have no access modifiers. B .  Member data can be modified directly. C .  The access modifier for methods is protected. D .  The access modifier to member data is private. E .  Methods provide for access and modification of data.

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• GRE（General Routing Encapsulation）即通用路由封装协议在（）接口实现。

  A . Gn B . Gb C . Gi D . Gr

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• What are some common layer 2 encapsulations for a WAN link?（）

  A . Ethernet B . PPP C . Token Ring D . HDLC E . Frame Relay F . POTS

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• Which of the following correctly describe steps in the OSI data encapsulation process?（）

  A . The transport layer divides a data stream into segments and may add reliability and flow control information. B . The data link layer adds physical source and destination addresses and an FCS to the segment. C . Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information. D . Packets are created when the network layer adds Layer 3 addresses and control information to a segment. E . The presentation layer translates bits into voltages for transmission across the physical link.

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• When configuring a serial interface on a router, what is the default encapsulation?（）

  A . atm-dxi B . frame-relay C . hdlc D . lapb E .

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• Which the two demonstrate encapsulation of data？（）

  A .  Member data have no access modifiers. B .  Member data can be modified directly. C .  The access modifier for methods is protected. D .  The access modifier to member data is private. E .  Methods provide for access and modification of data.

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• 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

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• Which of the following ATOM traffic encapsulations require the use of a Control Word？（）

  A . Cell relay B . aal5 C . Ethernet VLAN D . Frame Relay E . HDLC F . PPP

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• What is the data encapsulation method for the VPLS virtual circuit （VC）？（）

  A . MAC over MPLS B . L2TPV3 C . 802.1 QinQ D . Ethernet over MPLS E . GRE

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• What is the port number of an IPsec Encapsulating Security Payfoad packet？（）

  A . UOP port 50 B . IP protocol 51 C . TCP port 51 D . TCP port 50 E . IP protocol 50 F . UDP port51

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• Which two demonstrate encapsulation of data？（）  

  A .  Member data have no access modifiers. B .  Member data can be modified directly. C .  The access modifier for methods is protected. D .  The access modifier to member data is private. E .  Methods provide for access and modification of data.

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• 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

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• Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN?（）

  A . HDLC B . Ethernet C . Token Ring D . PPP E . FDDI F . Frame Relay

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• C++fullysupports（）programming，includingthefourproperties：encapsulation，datahiding，inheritance，andpolymorphism.

  A . computer-oriented B . procedure-oriented C . object-oriented D . aspect-oriented

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• Which encapsulation types are configurable on a Cisco switch for a trunk?（）

  A . VTP B . ISL C . CDP D . 802.1Q E . 802.1p F . LLC G . IETF

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• 下列关于AH（Authentication Header，验证头）和ESP（Encapsulating Securlt Paload，封装安全载荷）的描述正确的有（）。

  A . 两者都可以提供数据的完整性保护 B . 两者都可以提供数据源验证以及可选的抗重播服务 C . 两者都可以提供机密性保护 D . 两者都可以同时使用

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• Packed Cell Relay encapsulation with AToM inclues which of the following？（）

  A . Tunnel label B . VC-label C . 5-byte ATM header D . Payload E . 4 byte ATM header F . Support for 30 packed cell

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• In which integration method is an IPV6 packet encapsulated within an IPV4 protocol？（）

  A . proxy B . dual-stack C . tunneling D . dot1q

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• What is the encapsulation mode for MPLS running on Ethernet？（）

  A . Packet mode B . Frame mode C . Transparent mode D . Channel mode E . Tunnel mode

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• Which two are benefits of fully encapsulating a class？（）  

  A .  Performance of class methods is improved. B .  Implementation details of the class are hidden. C .  Access modifiers can be omitted on class data members. D .  Code that uses the encapsulation class can access data members directly. E .  Internal operation of the class can be modified without impacting clients of that class.

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