Interface congestion is causing drops in voice packets and TCP packets. The drops result in jerky speech quality and slower FTP traffic flows. Which two technologies would proactively address the TCP transfer rate and the voice problems？ （）

A . a minimum of 48 kb/s B . a maximum of 48 kb/s C . a minimum of 48% of the available bandwidth D . a maximum of 48% of the available bandwidth

A . It is supplied by the CSU/DSU. B . It is supplied by the far end router. C . It is determined by the clock rate command. D . It is supplied by the Layer 1 bit stream timing.

A . 接口故障 B . 接口正常 C . 协议正常 D . 协议故障

A . 接口故障 B . 接口正常 C . 协议正常 D . 协议故障

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

A .  An interface ’san-port-channel’ in NXOS B .  An interface ’port-channel’ in NXOS C .  An interface ’port-channel’ with ’mode fc’ configured D .  An interface ’fc-port-channel’ in NXOS

A . rmdev -dl ent0 B . ifconfig en0 down C . ifconfig en0 delete D . ifconfig ent0 detach

A . 4470 bytes B . 1516 bytes C . 9288 bytes D . 1500 bytes E . 1492 byte

A . Contingency； B . Emergency； C . A or B； D . not A nor B.

A . license information B . Alarm and Trace Configuration  C . CRS Installer  D . Control Center

A . There is a mismatch in encapsulation types B . The wrong type of cable is connected to the interface C . The interface has been configured with the shutdown command D . The interface is not receiving any keepalives E . The interface needs to be configured as a DTE device F . There is no encapsulation type configured

A . show ip interface [interface] access-lists B . show ip access-lists interface [interface] C . show ip interface [interface] D . show ip access-lists [interface]

A . Queuing introduces equal delays for packets of the same flow， resulting in jitter. B . When congestion occurs， dropping affects most of the TCP sessions， which simultaneously back off and then restart again. C . All buffers can temporarily be seized by aggressive flows， and normal TCP flows experience buffer starvation. D . There is no differentiated drop mechanism. Higher priority traffic is dropped in the same way as best-effort traffic. E . In TCP starvation， traffic exceeds the queue limit because of the bursty nature of packet networks. A router cannot handle multiple concurrent TCP sessions. F . Global synchronization occurs because multiple TCP hosts reduce their transmission rates at random intervals in response to packet dropping

A . Allows interfaces to share common IP addresses. B . Allows an interface to remain up without the aid of keepalives. C . Allows a router to send routing and not receive updates via that interface. D . Allows a routing protocol to forward updates that is missing its IP address. E . Allows a router to receive routing updates on an interface but not send updates via that interface.

A . Asynchronous Transfer Mode （ATM） B . data-link switching （DLSw） C . Route Processor Redundancy （RPR） D . Frame Relay （FR） E . Metro Ethernet F . Multiprotocol Label Switching （MPLS）

A . CBWFQ B . LLQ C . traffic shaping D . WRED

A . Asynchronous Transfer Mode （ATM） B . data-link switching （DLSw） C . Route Processor Redundancy （RPR） D . Frame Relay （FR）  E . Metro Ethernet F . Multiprotocol Label Switching （MPLS）

A . The cost is set to 10 for all interfaces. B . The cost is set to 10 for LAN interfaces and 20 for WAN interfaces. C . The cost is based on the speed of the interface. D . The cost is based o n a composite of bandwidth and delay of the interface.

A . show ip interface [interface] access-lists B . show ip access-lists interface [interface] C . show ip interface [interface] D . show ip access-lists [interface]

A . The parent policy-map shapes and the child policy-map queues. B . The mean-rate and burst-size must always be the same value. C . This will not work without a Dialer interface configured. D . The shaper provides congestion feedback.

A . It is supplied by the CSU/DSU. B . It is supplied by the far end router. C . It is determined by the clock rate command. D . It is supplied by the Layer 1 bit stream timing.

A.It is used to transmit global monitoring messages. It needs to be declared in the OSPF configuration. B.Indicate that the next hop of the tunnel needs to be encapsulated in the VLAN corresponding to the interface IP and the corresponding MAC address should be encapsulated. C.Indicate the start point and end point of the tunnel service. D.This address has nothing to do with the port. The network element still can be pinged successfully if it has one physical port connected.

A．A.Handover B．B.Cell Load Sharing C．C.Frequency Hopping