Which packet is sent in response to a BGP Open packet?（）A、helloB、keepaliveC、BGP openD、notification
Which packet is sent in response to a BGP Open packet?（）
- A、hello
- B、keepalive
- C、BGP open
- D、notification
相关考题：
Which L2TP protocol packet is sent by the LAC to establish the control connection (tunnel)?() A.Start Tunnel Discovery RequestB.Start Control Connection RequestC.L2TP Control Connection RequestD.L2TP Tunnel Establishment Request
Which packet is sent in response to a BGP Open packet?() A. helloB. keepaliveC. BGP openD. notification
During OSPF adjacency formation, in which state is a router in when an OSPF hello packet has been sent but bi－directional communication has not been achieved?() A.AB.BC.CD.D
When a packet is sent from Host 1 to Server 1, in how many different frames will the packet be encapsulated as it is sent across the internetwork()。 A.0B.1C.2D.3E.4
Refer to the exhibit. What does the (*) represent in the output?() A.Packet is destined for a local interface to the router.B.Packet was translated, but no response was received from the distant device.C.Packet was not translated, because no additional ports are available.D.Packet was translated and fast switched to the destination.
Which of the following is TRUE about the ping -f command?（）A、 It is useful for diagnosing data dependent problems by filling the packet with the byte pattern following the "f" in the command line. B、 It is useful for flooding from slow character based terminals since it only displays a dot "." for each packet sent in fast mode. C、 It is useful for flooding from slow character based terminals since it only displays a dot "." for each packet sent and a backspace on returned in fast mode. D、 The command can only be run by root.
You are creating a servlet that generates stock market graphs. You want to provide the web browser withprecise information about the amount of data being sent in the response stream. Which twoHttpServletResponse methods will you use to provide this information？（）A、response.setLength（numberOfBytes）；B、response.setContentLength（numberOfBytes）；C、response.setHeader（"Length"， numberOfBytes）；D、response.setIntHeader（"Length"， numberOfBytes）；E、response.setHeader（"Content-Length"， numberOfBytes）；F、response.setIntHeader（"Content-Length"， numberOfBytes）；
Which three IP multicast group concepts are true?（）A、If a packet is sent to a multicast group address, the multicast frame contains the source multicast address.B、A router does not have to be a member of a multicast group to recei ve multicast data.C、A router must be a member of a multicast group to send to the group.D、A router does not have to be a member of a multicast group to send to the group.E、If a packet is sent to a multicast group address, all members of the multic ast group will receive it.F、A router must be a member of a multicast group to receive multicast data.
Which three of these statements about the IP service level agreement （SLA） sender are true？ （）A、SLA sender target can be an IP hostB、SLA sender sends a probe packet and a response probe packetC、SLA sender sends a probe packetD、SLA sender target must be a routerE、SLA sender target can be an IP SLA responder
What are the DSL-specific factors that require additional bandwidth when supporting Voice-over-IP over an IPSec VPN?（）A、A voice packet is sent via multiple fixed-length cells; a portion of the last cell is padding, requiring more bandwidth.B、ADSL typically uses PPPoE encapsulation, which adds additional overhead to each voice packet.C、A voice packet is sent via multiple fixed-length cells; each cell has about 10% Layer-2 header overhead. D、IPSec requires additional overhead for the header and hash. E、ADSL carrier band requires additional bits to be carried over the wire to the DSL Access Concentrator.
Regarding PAR (Positive Acknowledgement and Re-transmission), which of the answer choices below are correct?（）A、The source device will only retransmit lost packets on the request of the destination device.B、The source device starts a timer when it sends a segment and retransmits if an acknowledgment is not received before the timer expires.C、The destination device acknowledges receipt of a segment by sending a packet with a new sequence number and the ACK bit sent.D、The destination device acknowledges receipt of a segment by sending a packet that indicates the next sequence number it expects.E、If the destination device does not receive a segment, all segments are retransmitted.F、The source device keeps a record of all segments sent and expects and acknowledgment of each.
Which of these statements about PIM join messages in classic PIM-SM is correct？（）A、PIM join messages are sent every 60 seconds to refresh the upstream router’s mroute state for the multicast tree.B、Routers send a PIM join acknowledgement in response to each PIM join message received from a downstream router.C、PIM join messages are only sent when the multicast distribution tree is first being established.D、PIM join messages are sent every three minutes to refresh the upstream router’s mroute state for the multicast tree.
Which three IP multicast group concepts are true？ （Choose three.） （）A、 If a packet is sent to a multicast group address， all members of the multicast group will receive itB、 If a packet is sent to a multicast group address， the multicast frame contains the source multicast addressC、 A router does not have to be a member of a multicast group to receive multicast data.D、 A router does not have to be a member of a multicast group to send to the group.E、 A router must be a member of a multicast group to receive multicast data.F、 A router must be a member of a multicast group to send to the group.
When a packet is sent from Host 1 to Server 1, in how many different frames will the packet be encapsulated as it is sent across the internetwork?（）A、0B、1C、2D、3E、4
Which mechanism does OSPFv3 use when the router LSA is too big to be sent out？（）A、It relies on IPv6 to do the fragmenting.B、It splits the LS Update packet into smaller packets.C、It splits the LSA into smaller router LSA packets.D、It produces an error.
Based on the following output in R1， which statement is true？（）A、If a labeled packet arrives with the top most label of 17， it will be replaced with label 19 and sent out on Ethernet 0/0 interface.B、If a labeled packet arrives with the top most label of 19， it will be replaced with label 17 and sent out on Ethernet 0/0 interface.C、If a labeled packet arrives with the top most label of 17， all the labels will be removed and a clear IP Packet is sent to Next Hop 192.168.0.14 on Ethernet 0/0.D、None of the above.
You are designing a performance monitoring plan for the database that supports APP1. You need to monitor only necessary indicators. Which indicator or indicators should you include in the baseline?（）A、response times for frequently used queriesB、database backup and restore completion timesC、disk I/OD、CPU utilizationE、network packet sizeF、SOAP requests failed
单选题Which L2TP protocol packet is sent by the LAC to establish the control connection (tunnel)?（）AStart Tunnel Discovery RequestBStart Control Connection RequestCL2TP Control Connection RequestDL2TP Tunnel Establishment Request
多选题If an edge Label Switch Router （LSR） is properly configured，which three combinations are possible？（）AA received IP packet is forwarded based on the IP destination address and the packet is sent as an IP packet.BAn IP destination exists in the IP forwarding table. A received labeled packet is dropped because the label is not found in the LFIB table.CThere is an MPLS label-switched path toward the destination. A received IP packet is dropped because the destination is not found in the IP forwarding table.DA received IP packet is forwarded based on the IP destination address and the packet is sent as a labeled packet.EA received labeled IP packet is forwarded based upon both the label and the IP address.FA received labeled packet is forwarded based on the label. After the label is swapped，the newly labeled packet is sent.
多选题Which three of these statements about the IP service level agreement （SLA） sender are true？ （）ASLA sender target can be an IP hostBSLA sender sends a probe packet and a response probe packetCSLA sender sends a probe packetDSLA sender target must be a routerESLA sender target can be an IP SLA responder
多选题You are the network administrator for your company. A user is complaining that they are not able to access the network with the Junos Pulse client. You run a packet capture on the network interface to monitor the 802.1X authentication process. You notice that after the EAP- request/identity packet is received, and the supplicant responds with an EAP-response/identity packet, no further communication occurs for several seconds. What are three causes for this behavior? （）AThe authenticator is not licensed to support Junos Pulse.BThe authenticator did not receive the EAP-response/identity packet.CThe authentication server is not receiving the RADIUS packet containing the EAP-response/identity data.DThe authenticator is sending the request over its loopback interface.EThe authentication server is sending back a RADIUS response packet, but the authenticator is not forwarding the response back to the supplicant.
单选题Which of the following is TRUE about the ping -f command?（）A It is useful for diagnosing data dependent problems by filling the packet with the byte pattern following the f in the command line. B It is useful for flooding from slow character based terminals since it only displays a dot . for each packet sent in fast mode. C It is useful for flooding from slow character based terminals since it only displays a dot . for each packet sent and a backspace on returned in fast mode. D The command can only be run by root.
单选题Assuming that an IP packet is sent from a source address in VLAN1 to a destination address in VLAN2 through a layer-3 switch, which part of the packet will be changed?（）ALayer 2 TTLBLayer 3 TTLCLayer 3 source addressDLayer 3 destination address
多选题Which three IP multicast group concepts are true?（）AIf a packet is sent to a multicast group address, the multicast frame contains the source multicast address.BA router does not have to be a member of a multicast group to receive multicast data.CA router must be a member of a multicast group to send to the group.DA router does not have to be a member of a multicast group to send to the group.EIf a packet is sent to a multicast group address, all members of the multicast group will rece ive it.FA router must be a member of a multicast group to receive multicast data.
单选题Which packet is sent in response to a BGP Open packet?（）AhelloBkeepaliveCBGP openDnotification
单选题Based on the following output in R1， which statement is true？（）AIf a labeled packet arrives with the top most label of 17， it will be replaced with label 19 and sent out on Ethernet 0/0 interface.BIf a labeled packet arrives with the top most label of 19， it will be replaced with label 17 and sent out on Ethernet 0/0 interface.CIf a labeled packet arrives with the top most label of 17， all the labels will be removed and a clear IP Packet is sent to Next Hop 192.168.0.14 on Ethernet 0/0.DNone of the above.
单选题Which mechanism does OSPFv3 use when the router LSA is too big to be sent out？（）AIt relies on IPv6 to do the fragmenting.BIt splits the LS Update packet into smaller packets.CIt splits the LSA into smaller router LSA packets.DIt produces an error.
单选题A router receives an IPv6 packet which is 2000 bytes in length. The MTU of the outgoing interface is 1500 bytes. Which action will the router take?（）AForward the packet.BFragment the packet.CDrop the packet silently.DDrop the packet and send an ICMPv6 message.