If the receive cache of a switch's gigabit Ethernet interface is full, what protocol does the switch use to know that the remote interface delays sending data frames for a period of time?
Router HW cannot access hosts in the remote network, router HW runs routing protocols and only pings the remote file server address 105401 on router HW with extensions through a default route remote network , the result of ping on the router HW is rendered as 'requ.' est time out', according to the above description, the error in the following analysis is ?
LDP messages are exchanged between LDLRs running the LDP protocol, and LDP messages can be divided into four types according to function, which of the following is not an LDP message type ?
What is wrong with the following statement about digital certificates?
The correct description of the scene shown in the following figure is:
When DLDP detects the presence of a one-way link in the fiber, the default actions of Huawei equipment include: the DLDP state machine migrates to the Disable state, outputs Trap information, and automatically sets the interface to a blocked state.
Man-in-the-middle attacks or IP/MAC spoofing attacks can lead to information leakage and other hazards, and are more common in the intranet, in order to prevent man-in-the-middle attacks or IP/MAC spoofing attacks, you can take the configuration method
Which of the following default routing delivery methods does OSPF support?( Multi-select)
IS-IS is a link-state routing protocol that uses the SPF algorithm for route calculations. As shown in the figure, at the same time, a certain area has IPV4 and IPV6 and runs IS-IS to achieve network interconnection, of which R2 only supports IPV4 Regarding the topology calculation of the network, which of the following statements is correct?
The network administrator is ready to use the 6to4 automatic tunnel to carry IPv6 data on the IPv4 network, and the IPv4 address of the router interface is 1381485210, so the corresponding tunnel address is 2001:8a0e:55d2:1:230:65ff:fe2:9a6?
If you run PIM-SM in a multicast network, you need to build a multicast forwarding tree between the multicast source and the receiver to enable the receiver to receive the multicast effect, so what are the following options for the correct tree sketch for the build?
Which of the following statements about RADIUS is correct?( Single choice questions).
The following description of VRRP load sharing is correct?( Multiple choice questions).
What is the following description of LDP reliability?
The following statement about EVPN Type5 routing is wrong?( Single choice questions).
What is the following description of MPLS BGPVPN incorrect?
A switch joins a running stacking system after powering up, a behavior known as heap overlay.
There are routers as follows, according to which the compromise conclusion is wrong?
A routing tool can define multiple entries. Which tool will automatically add a deni-any entry at the end of the configuration?
DHCPv6 servers support additional configuration information such as DNS server addresses for hosts.
The following statement about the application of BFD is correct?
Is the following description of the differences between IGMP name versions correct?
What are the ways to divide VLANs in Huawei switches? ( Multi-select) A Subnetting based on IP.
B. Division based on QoS
C. Partitioning based on port
D. Division based on protocol
E. Division based on MAC address.
The fields that represent priority in the VLAN (8021Q) data encapsulation are a total of 6 bits.
The following is correct about the LSA of OSPFv3
Each DD message has a sequence number for data confirmation, and a DD sequence number is 2 bytes long
If we have a VPN instance configured on a router, if we need to view the VPN route on a Huawei router, which of the following commands should we use?
When the IPv6 address of a host is configured with a stateless address configuration, and other parameters other than the address are obtained through DHCPv6, how to set the M and 0 bits in the RA message ?
A router receives a BGP route with the community attribute NO-Export , how will the router handle the BGP route?
The following description of BGP loop protection is correct: multi-select
As shown in the following figure, a part of the LSDB LSDB of a router LSDB is shown in the first one in the following figure. A new LSP has been received, the second one in the figure below, and the following statement is incorrect (single choice).
The following statement about the Security Alliance SA in IPSec is wrong with ?
As shown in the figure, the overload bit of ISIS is set in the configuration of router R3, and the following statement is correct
A R3's direct route will be ignored by R1 and R2 because of the setting of the overload bit .
B. When the router runs out of memory, the system automatically sets the overload flag bit in the sent LSP packets. Irrelevant to whether the user has a set-overload command configured.
Routes introduced by C. R3 through import-route will not be published. The LSP of D. R3 will not be able to spread to R1 and R2
E. R3 initiates the load state, and R1 and RZ will not calculate the LSP of R3 cattle in the SP tree.
A company network runs the OSPF protocol, an engineer in order to understand the OSPF mechanism in the network to perform packet capture operations, the following ospf message description is correct?
What are the wrong statements about OSTPF's Router LSA and Network LSA?
Which of the following is incorrect about HTTPS?( Multiple Choice)
As shown in the topology diagram, all interfaces of the router in the figure are enabled with the ISIS protocol, and the following statement is correct.
The following statement about IPSec VPN is correct ?qo
In a VXLAN network, traffic is connected to the VXLAN network, and it can also be used to communicate with the same subnet within the same XLAN network
Port isolation technology deployed in Ethernet can realize Layer 2 interoperability and Layer 3 isolation, making networking more flexible.
Huawei's two switches SWA and SWB are connected together by 7 Ethernet cables, and static link clustering is configured, and the corresponding port on the switch SWA is Ethernet 1/0/1 ?Ethernet1/0/2?Ethernet 1/0/3?Ethernet 1/0/4?Ethernet 1/0/5, Ethernet1/0/6, Ethernet 1/0/7, configured in order of port if the switch SWA, SWB supports only 6 ports per aggregation group
What kind of scenario can use AS one path and one filter?
When the ABR is a type 5/7 LSA switch router for the NSSA zone, then the ABR can be paired to Category 7 LSA is a derivative of 5 LSAs for aggregation.
In which of the following cases, RSTP refreshes the MAC address table?( Multi-select)
Router RL and Router R2 run BGP both routers are in the AS65234 The router R2 route is present in the BGP routing table of router RI, but not in the P of router R1 road
ICMPv6 has two types: Error Messages and Information Messages.
The Serial Number field of LS is used to detect expired and duplicate LSAs. The field is a 32bt signed integer, so the small serial number is Ox8000000
Regarding the site in the BGP/MPLSIP VPN network architecture, the following description is correct?
Regarding the WRR (Weight Round Robin) description of the error is ?( Multiple select).
The HTTP protocol is based on TCP, so http Flood attacks can be defended against HTTP Flood attacks using the TCP Flood attack prevention method.
Is the following information about BGP4+ described correctly?
Regarding MP-BGP, the following description is wrong?
In addition to stateless address autoconfiguration, IPV6 devices can also obtain addresses, gateways, DNS, and other information through DHCPv6
Regarding the difference between NSR and NSF, the correct one is?
Auto-negotiate mode is to obtain the maximum interface rate and operating mode, the network administrator configures all Ethernet interface rates of a working switch to 10OMbps, and the operating mode is configured as Full-duplex, when a network card is configured After the auto-negotiate workstation is connected to the switch, the negotiation result is that the interface rate is 10OMbps and the working mode is half-duplex, which of the following explanations is the most reasonable for this phenomenon?
In a multicast network, what causes multicast traffic to not forward properly?
The MAC address of a PC is 5489-98FB-65D8 The administrator wants this PC to get the specified P address 1921681.11/24 from the DHCP server So the administrator-configured command should be,
Which nationality meets the following two conditions: 1] BGP Router A can choose whether the Ulpdate message is based on the nationality. ( ) If Router B receives a Updae message containing a cross-hatch, run-by B does not have an identified solidity, but will also contain a multifaceted] Ulpdate retracts the advertisement to Router C. Router C may recognize and apply this attribute. (Multiple choice questions).
Link state information is isolated by default between different IS-IS processes on the same router.
When troubleshooting a local area network, you notice a large number of frame alignment errors, FCS errors and LAG conflicts, and the possible cause of these problems is ?
As shown in the following topology, EBGP is running between ASI0O0, AS.203, AS.30, AS8400, and the neighbor relationship has been established as RECEIVed by AS4O0 When AS1OO issues a 1..11/2 CIDR segment BGP route, the path order recorded in the ASPath attribute is correct
OSPFv3 uses the same route advertisement method as OSPFv2: advertising is done through the network command in the OSPFv3 area view.
The following description of the Lsp shard extension for ISIS is correct?
Regarding the DSCP field, the following statement is incorrect: single selection
Cross-device link aggregation realizes the back-to-back transmission of data traffic and the mutual spare of the heap member switches, but due to the limited bandwidth of the heap cable between the heap devices, the forwarding efficiency can be improved in the following ways?
Regarding the description of the hello message in the PIM-SM message, the error is ?
XLAN uses BGP EVPN to establish a tunnel, what type of message is used? ( Single choice questions).
Is the following GR description of ISIS correct?
: :1/128 is the IPV6 loopback address
The following statement about the concept of multicast is wrong?
The following description of the LDPLSP establishment process is correct?
The link quality of a company's network is poor, often failures lead to route oscillation, and even occasionally there are routing loops, in order to prevent the recurrence of these phenomena, the network administrator decided to deploy URPF in the whole network to improve the stability of the network
The authentication types of ISIS include interface authentication, zone authentication, and routed domain authentication
The firewall has created some security zones by default, which of the following security zones does not exist by default on the firewall?( Radio).
Two routers, connected together through the serial port, but can not ping between each other , now check the port status as follows: Can the following information determine what the cause is?
What commands are related to BGP route reflectors?( Multiple select).
As shown in the figure, in the context of IPv4 and IPv6, the SEL field in the NET address of isis always takes a value of 00 ?
As shown in the following figure, R1, R2, R3 establish a neighbor relationship of Level2 The IP routing table for R3 is correct (multiple choice).
The data results of a router are as follows, and the analysis conclusion is correct (single choice).
The interface Serial0 of an existing router is in OSPF area 1, and the interface Serial0 is set to Silent interface. So what kind of impact will this setting have
You want to set the DSCP value of VolP traffic in HW network devices to EF. According to the differentiated service model RFC, traffic token EF should be set to:
The following statements about the VRRP protocol are correct (multiple choice).
In an MPLS domain, depending on how the LSR handles the data, the LSR can be divided into Ingress LSR, Transit LSR, and Transit LSR Egress LSR? For the same FEC An LSR can be an Iningress LSR for that EC or a Transit for that FEC LSR.
/R1Jospf1lRL-osp- jarea.2[RLospf-1-arca-0002]network1001310000 As shown in the configuration, the administrator configured OSPF but RI on R1 You cannot learn routes for other routing rings. Then the possible cause is the question).
The multicast protocol that can generate multicast distribution trees is ?
Which of the following LSAs propagate in a single region only?
Which of the following options is correct?
HW users are transferring a very large number of files via TFTP. What protocol does TFTP rely on for transmission?