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For best packet switching performance with crypto, what is the recommend packet switching path in a Cisco Teleworker Router?（）
A . Process Switching
B . Silicon Switching
C . Cisco Express Forwarding (CEF) Switching
D . Autonomous Switching
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What are two benefits of using VTP in a switching environment?（）
A . It allows switches to read frame tags.
B . It allows ports to be assigned to VLANs automatically.
C . It maintains VLAN consistency across a switched network.
D . It allows frames from multiple VLANs to use a single interface.
E . It allows VLAN information to be automatically propagated throughout the switching environment.
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当音频转换面板上（AUDIO SWITCHING）的转换电门位于F/O3位置时，表示（）.
A . 机长使用第三站位处的ACP
B . 第三站位人员使用副驾驶处的ACP
C . 机长使用副驾驶处的ACP
D . 副驾驶使用第三站位处的ACP
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下列选项哪一个不属于Switching System（）
A . EIR
B . BSC
C . HLR
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根据下图，Switch1刚刚完成重启，并完成上电自检。HostA发送它的第一个侦到HostC，交换机首先会对switching table做什么操作（）https://assets.asklib.com/images/image2/2018072311174167979.png
A . Switch1会添加192.168.23.4到switchingtable
B . Switch1添加192.168.23.12到switchingtable
C . Switch1添加000A 8A47.E612到switchingtable
D . Switch1添加000B DB95.2EE9到switchingtable
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What is the action of "pop" in the context of MPLS switching？（）
A . It removes the top label in the MPLS label stack.
B . It adds a top label in MPLS label stack.
C . It replaces the top label in the MPLS label stack with another value.
D . It replaces the top label in the MPLS label stack with a set of labels.
E . None of above.
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中央操纵台上SWITCHING旋钮如果放至CAT位时，机长一侧的PFD及ND上的数据将由（）提供？
A . A、ADR1或IR1
B . B、ADR2或IR2
C . C、ADR3或IR3
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For SONET ring switching， the 50ms switch time： Select all that apply？（）
A . Plncludes the detection time
B . Applies to rings smaller than 1200km
C . Applies to rings smaller than 1000km
D . Includes up to 16 node
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In the 7-layer OSI model, which layer switching will take place?（）
A . Layer one
B . Layer two
C . Layer three
D . Layer four
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What are two characteristics of "store and forward" switching?（）
A . Latency fluctuates regardless of frame size.
B . The switch receives the complete frame before beginning to forward it.
C . Latency through the switch varies with frame length.
D . The switch checks the destination address upon receipt of headers.
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Which two of the following Cisco router platforms support Multicast Distributed Fast Switching？（）
A . 3600 series
B . 7200 series with NSE-1
C . 7500 series
D . 12000 serie
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UPSR protection switching is initiated by （）, while BLSR is initiated by （）.
A . the K1 SONET byte； the K2 SONET byte
B . the K2 SONET byte；the K1 SONET byte
C . transmitter switching；receiver detection
D . Line Overhead bytes；Path Overhead bytes
E . Path Overhead bytes；Line Overhead byte
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What is the difference between 1+1 and 1：1 protection switching？（）
A . 1+1 is based on APS， while 1：1 is based on IPS.
B . 1：1 is used in SNCP switching， while 1+1 is used in MS-SPRing switching.
C . 1+1 sends signals on Working and Protect paths， while 1：1 sends signals only on Working path.
D . 1+1 sends signals on Working path ONLY， while 1：1 sends signals on both Working and Protect paths.
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道岔区坡 gradient within the switching area
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Which two of the following Cisco router platforms support Multicast Distributed Fast Switching?（）
A . 3600 series
B . 7200 series with NSE-1
C . 7500 series
D . 12000 serie
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Which statement about L2VPN Pseudowire Switching is not true？（）
A . L2VPN Pseudowire Switching allows the user to extend L2VPN Pseudowires across an inter-AS boundary
B . L2VPN Pseudowire Switching allows the user to extend L2VPN Pseudowires across two separate MPLS networks
C . Quality of service is not supported per Pseudowire
D . L2VPN Pseudowire Switching connects two or more contiguous Pseudowires segments to from an end-to-end multihop Pseudowire
E . The Cisco MPLS Traffic Engineering tunnel selection is not supported
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当AUDIO SWITCHING在CATP3时，机长使用下列那些通讯设备（）
A . A、使用其指定的音响设备
B . B、机长使用F/O的音响设备和第三成员的音频控制面版
C . C、机长使用他自己的音响设备和第三成员的音频控制面版
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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
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Which of the following is not a characteristic of fast switching？（）
A . Fast switching reducesa routers CPU utilization， compared to process switching
B . All packets of a flow， except for the first packet， use the information in the fast cache
C . It can be enabled with the interface command ip route-cache
D . Fast switching uses a fast cache maintained in a router’s control plane
E . The fast cache contains information about how traffic from different data flows should beforwarded
F . Even though the fast switching is enabled， the first packet of a flow is still process switched
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Which Cisco product performs virtualized Ethernet switching within a VMware ESX host?（）
A . Nexus l000
B . Nexus 2000
C . Nexus 5000
D . Nexus 7000
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On T3 EMS, protection switching that PTN equipment can support include（),（),（), and pr
On T3 EMS, protection switching that PTN equipment can support include(),(),(), and protection lock.
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Packet-switching wireless networks are preferable（41)when transmissions are（42)because of
Packet-switching wireless networks are preferable(41)when transmissions are(42)because of the way charges are(43)per packet. Circuit-switched networks are preferable for transferring large files or for other lengthy transmissions because customers are(44)for the(45)of time they use the net-work.
A．to
B．for
C．than
D．only
