Which statement is true when using a Cisco Wireless Mesh Networking Solution？（）A、The backhaul link is dynamic 1 to 54Mb/s.B、The backhaul link is typically a fixed value.C、The backhaul link uses DAS antennas.D、The backhaul link uses antenna multiplexing.E、

第1题：

Which statement is correct about an OSPF sham-link？（）

• A、A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.
• B、A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.
• C、A sham-link is a logical link between PE routers that carries OSPF LSAs and forwards customer traffic across it.
• D、A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.
• E、A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.

第2题：

Switch R1 has been configured with DTP using the desirable option.  Which statement describes  Dynamic Trunking Protocol （DTP） desirable mode？（）

• A、 The interface actively attempts to convert the link to a trunk link.
• B、 The interface is put into permanent trunking mode but prevented from generating DTP frames.  
• C、 The interface is put into permanent trunking mode and negotiates to convert the link into a trunk  link.
• D、 The interface is put into a passive mode， waiting to convert the link to a trunk link.  
• E、 None of the other alternatives apply

第3题：

Which parameter can be tuned to affect the selection of a static route as a backup.when a dynamic protocol is also being used?（）

• A、link bandwidth
• B、hop count
• C、link cost
• D、administrative distance

第4题：

IP backhaul基站信令必须通过5ESS作半固定连接。（）

第5题：

Which two range descriptions correctly describe IP addressing to use when enabling multicast support using the Cisco Unified Wireless Solution?（）

• A、globally scoped address range
• B、239.0.0.X or 239.128.0.X address range
• C、administratively scoped address range that does not overlap with a link-local MAC address
• D、any Class D address range
• E、site-local scoped address range

第6题：

Which two statements about using the CHAP authentication mechanism in a PPP link are true?（）

• A、CHAP uses a two-way handshake
• B、CHAP authentication periodically occurs after link establishment
• C、CHAP has no protection from playback attacks
• D、CHAP authentication is performed only upon link establishment
• E、CHAP uses a three-way handshake
• F、CHAP authentication passwords are sent in plaintext

第7题：

Which three statements about MPLS traffic engineering （MPLS TE） are true？ （）

• A、MPLS TE supports admission control
• B、MPLS TE tunnel traffic is a link attribute to compute the TE tunnel path
• C、MPLS TE uses BGP extension to advertise link attributes
• D、MPLS TE provides protection capability
• E、MPLS TE uses RSVP to establish LSP

第8题：

Which of the following routing protocols is a link state and uses a backbone called area 0？（）

• A、OSPF
• B、EIGRP
• C、BGP
• D、IS-IS

第9题：

Which three statements about dynamic filtering are true? （）

• A、Dynamic filtering creates a query statement.
• B、Dynamic filtering has an option to save query.
• C、Dynamic filtering can select any log field to filter.
• D、Dynamic filtering permanently removes other log entries.
• E、Dynamic filtering redraws the log when you select a variable link.

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第13题：

You are the network administrator tasked with designing a switching solution for the Company  network.  Which of the following statements describing trunk links are INCORRECT？（）

• A、 The trunk link belongs to a specific VLAN.
• B、 Multiple trunk links are used to connect multiple end user devices.
• C、 A trunk link only supports native VLAN.
• D、 Trunk links use 802.10 to identify a VLAN.
• E、 The native VLAN of the trunk link is the VLAN that the trunk uses for untagged packets.

第14题：

What statement is true？（）

• A、Link Control Protocol（LCP） is used for basic PPP link setup and operation
• B、Link Control Protocol（LCP） is used for denying PPP connections to unauthorized devices.
• C、Link Control Protocol（LCP） for PPP is synonymous to ARP for Ethernet.
• D、None of the above

第15题：

Which statement is true about IP telephony calls？（）

• A、 A Voice over IP （VoIP） packet consists of the voice payload， IP header， TCP header， RTP header， and  Layer 2 link header.
• B、 The voice carrier stream uses H323 to set up， maintain， and tear down call endpoints.
• C、 Call control signaling uses Real-Time Transport Protocol （RTP） packets that contain actual voice  samples.
• D、 The sum of bandwidth necessary for each major application， including voice， video， and data， should not exceed 75 percent of the total available bandwidth for each link.

第16题：

Which parameter can be tuned to affect the selection of a static route as a backup.when a dynamic protocol is also being used?（）

• A、link bandwidth
• B、hop count
• C、link cost
• D、administrative distance
• E、link delay

第17题：

You have just finished aligning a Cisco Aironet 1400 Series Wireless Bridge link using installationmode.When you set the link back to operational mode you loose association to the root bridge. Which action will correct the problem？（）

• A、Configure the bridge to force infrastructure devices to associate only to the SSID parameter.
• B、Enable passwords on both bridges.
• C、Configure the distance parameter value.
• D、Configure the proper channel.

第18题：

You have just finished aligning a Cisco Aironet 1400 Series Wireless Bridge link using installation mode.When you set the link back to operational mode you loose association to the root bridge. Which action willcorrect the problem？（）

• A、Configure the proper channel.
• B、Enable passwords on both bridges.
• C、Configure the distance parameter value.
• D、Configure the bridge to force infrastructure devices to associate only to the SSID parameter.

第19题：

Which mechanism can you use to achieve sub-second failover for link failure detection when a switched Ethernet media is used and loss of signal is not supported by the link provider？（）

• A、OSPF standard hellos
• B、Cisco Discovery Protocol link detection
• C、Bidirectional Forwarding Detection
• D、Fast Link Pulse
• E、autonegotiation

第20题：

How is the cost of a virtual link in OSPF calculated?（）

• A、Takes the metric of the outgoing interface.
• B、Uses the metric that is assigned during configuration.
• C、Uses the path metric to reach the virtual link neighbor.
• D、Uses a default of zero unless otherwise specified.

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