Estudos para certificação 5

What is the mode for the AP to obtain the version from the AC to upgrade? (Multiple choice). FTP mode. SFTP mode. TFTP mode. AC mode.

The MPLS label header is encapsulated between the data link layer header and the network layer header of the message. True. False.

Which of the following commands can be used to view the CPU usage of the router?. display cpu-usage. display memory. display cpu-state. display interface.

SNMP consists of which of the following parts? (Multiple choice). Managed objects. Network management system. Management Information Base. Agent process.

Which category does the IPv6 address FE80::2E0:FCFF:FE6F:4F36 belong to?. Multicast address. Global Unicast Address. Link-local address. Anycast address.

Which of the following statements about the Python language is wrong? (Multiple choice). Python generally executes code sequentially from beginning to end. Pay attention to the use of comments when writing code to help people who read the code understand. Comments start with =. The Python language supports automatic indentation, so you don't need to pay attention when writing code. The function of print () is to output the content inside the brackets.

The role of the collaboration layer in the SDN architecture is to complete service deployment based on user intentions. OpenStack belongs to the business collaboration layer. True. False.

The administrator wants to update the VRP version of the Huawei router, what is the correct way? (Multiple choice). The administrator configures the router as an FTP server to transfer the VRP software through FTP. The administrator sets the router as an FTP client, and transfers the VRP software through FTP. The administrator configures the router as a TFTP client to transmit the VEP software through TFTP. The administrator configures the router as a TFTP server and transmits the VRP software through TFTP.

The output information of a certain device is shown in the figure, which of the following statements is correct? (Multiple choice). The standby main control board of the device is running normally. The VRP operating version of the device is CRP5. The name of the device is Huawei. The device has been running for 1 minute.

How many ways does VRP support to configure the router? (Multiple choice). Configure the router through Telnet. Configure the router through the Console port. Configure the router via FTP. Configure the router through the mini USB port.

As shown in the figure, the G0/0/0 and G0/0/1 interfaces of RTA are respectively connected to two different network segments, and RTA is the gateway of these two networks. Before host A sends data to host C, it will first send an ARP Request to obtain the MAC address of ()?. SW. host C. G0/0/1 interface of RTA. G0/0/0 interface of RTA.

When the router forwards a data packet, if it does not match the corresponding detailed route and there is no default route, it will directly discard the data packet. True. False.

The header length field of an IPv4 data packet is 20B, and the total length field is 1500B, so the payload of this data packet is?. 1480B. 1520B. 20B. 1500B.

A routing entry contains multiple elements. Which of the following statements is wrong?. NextHop displays the local interface address corresponding to this routing entry. Pre shows the priority of this routing protocol. Destination/Mask displays the address and mask length of the destination network/host. Proto shows the source from which this route was learned.

VRP supports OSPF multi-process. If no process number is specified when OSPF is enabled, the default process number is?. 0. 1 _. 10. 100.

An AR2200 router needs to restore the initial configuration, which of the following operations are necessary? (Multiple choice). Reset the saved configuration. Clear the current configuration. Restart the AR2200 router. Re-specify the configuration file loaded at next startup.

The administrator configures OSPF on a certain router, but no loopback interface is configured on this router. What is the correct description of the Router ID below?. The priority of the router will become the Router ID. The IP address of the router's management interface will become the Router ID. The maximum IP address of the router's physical interface will become the Router ID. The minimum IP address of the router's physical interface will become the Router ID.

The broadcast address is a special address in which all the host bits in the network address are set to 1, and it can also be used as a host address. True. False.

During campus network planning, VLANs can be planned according to business types. True. False.

Which message does the OSPF protocol use to confirm the received LSU message?. LSU. LSACK. LSR. LSA.

Telnetlib is a template that comes with Python to implement the Telnet protocol. True. False.

Which of the following configuration commands is correct? <Huawei> system-view [Huawei] command-privilege level 3 view user save. Modify the authority level of the user view command to 3, and save the configuration. Modify the user's permission level to 3, and save the configuration. Modify the permission level of the save command used by a certain user to 3. Modify the permission level of the save command in the user view to 3.

The ports of Trunk type and Hybrid type are processed in the same way when receiving data frames. True. False.

Which of the following advantages does stacking and clustering technology have? (Multiple choice). Number of expansion ports. Simplify device management, just manage a logical device. Link aggregation across physical devices can be deployed. Effectively avoid single point of failure.

By default, the port cost (Port Cost) calculated by STP has a certain relationship with the port bandwidth, that is, the larger the bandwidth, the cost will be?. Consistent. small. big. not necessarily.

The network is shown in the figure below, and the switch configuration information is shown in the figure. Which of the following statements is correct? (Multiple choice). Data frames on both links do not include VLAN TAG. Host A and host B can ping through. Host A and Host B cannot be pinged. The PVID of port GigabitEthernet0/0/1 on the switch is 20.

Which of the following statements about one-arm routing is correct? (Multiple choice). One physical connection per VLAN. Subinterfaces need to be created on the router. On the switch, configure the port connected to the router as a Trunk port, and allow frames of the relevant VLAN to pass through. Only one physical link is used between the switch and the router.

The two switches shown in the figure below have both enabled the STP protocol, which port will eventually be in the Blocking state?. G0/0/3 port of SWA. G0/0/2 port of SWA. G0/0/2 port of SWB. G0/0/3 port of SWB.

Neither the Alternate port nor the Backup port in RSTP can forward user traffic, nor can it receive, process, or send BPDUs. True. False.

The switch is connected to the host, and the commonly used port link type of the switch is?. Hybrid link. Trunk link. Access link. Trunk link.

What are the characteristics of dividing VLANs based on ports?. Add a BLAN tag to the data frame according to the IP address carried in the message. Host relocation does not require VLAN reconfiguration. The location of the host needs to reconfigure the VLAN. Assign VLAN ID according to the protocol type and encapsulation format of the data frame.

The port of the device running the STP protocol is in the Forwarding state. Which of the following statements is correct?. This port only receives and processes BPDUs, and does not forward user traffic. This port not only does not process BPDU packets, but also does not forward user traffic. This port not only forwards user traffic but also processes BPDU packets. The port will build a MAC address table based on received user traffic, but will not forward user traffic.

When the switch receives a unicast data frame, it will look up the destination MAC address in the MAC table. Which of the following statements is wrong?. If the MAC address is found, and the port corresponding to the MAC address in the MAC address table is the port through which the frame enters the switch, the switch will discard the frame. If the WAC address cannot be found, the switch performs a flooding operation. If the MAC address is found, and the port corresponding to the MAC address in the MAC address table is not the port where the frame enters the switching machine, the switch performs the forwarding operation. If the MAC address cannot be found, the switch will discard it.

In the network shown in the figure, which of the following configurations can enable host A to access the Internet, but host B cannot? (Multiple choice). acl number 2000 rule 5 deny source 100.0.12.0.0.0.0.255 rule 10 permit # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #. acl number 2000 rule 5 permit source 100.0.13.0.0.0.0.255 rule 10 deny source 100.0.12.0.0.0.0.255 # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #. acl number 2000 rule 5 permit source 100.0.13.0.0.0.0.255 rule 10 deny # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #. acl number 2000 rule 5 deny source 100.0.12.0.0.0.0.255 rule 10 permit source 100.0.13.0.0.0.0.255 # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #.

Config mode is the default ACL matching sequence on Huawei devices. True. False.

What is the number range of the basic ACL?. 4000~4999. 6000~6031. 3000-3999. 2000-2999.

What is the default ACL step size on AR G3 series routers?. 10. 5. 20. 15.

In the network shown in the figure below, host A logs in to router A through Telnet, and then obtains the configuration file of router B through FTP on the remote interface. How many TCP connections exist in router A at this time?. 4. 1. 3. 2.

When a Windows host starts for the first time, if DHCP is used to obtain an IP address, what is the source IP address of the first packet sent by this host?. 255.255.255.255. 0.0.0.0. 127.0.0.1. 169.254.2.33.

At what ratio does the DHCP client send the lease renewal message for the first time when the lease period reaches?. 0.25. 0.5. 1. 0.875.

What is used to identify wireless networks in WLAN and distinguish different wireless networks?. AP Name. SSID. VAP. BSSID.

When we search for an accessible wireless network on a laptop, what is the actual network name displayed?. BSS. BSSID. ESS. SSID.

Which of the following descriptions about static and dynamic routing is wrong?. Dynamic routing protocols take up more system resources than static routing. After a link failure occurs, static routing can automatically complete network convergence. Static routing is easy to configure and easy to manage when it is applied in the enterprise. After the administrator deploys the dynamic routing protocol in the enterprise network, later maintenance and expansion can be more convenient.

As shown in the figure, regarding the topology and configuration of OSPF, which of the following statements is correct?. R1 and R2 can establish a stable OSPF neighbor relationship. Compared with R1 and R2, R2 has a higher chance to become the DR because its interface DR priority value is smaller. As long as the interface network type of R1 is restored to the default broadcast type, R1 and R2 can establish a stable neighbor relationship. As long as the interface network type of R1 is restored to the default broadcast type, and the hello time is adjusted to 10s, R1 and R2 can establish a stable neighbor relationship.

The routing table output information of router R1 is shown in the figure, which of the following statements is correct? (Multiple choice). Packets whose destination network is 12.0.0.0/8 will be forwarded from Ethernet0/0/0 interface of the router. The router discards packets with the destination network 11.0.0.0/8. The router will forward packets with the destination network 12.0.0.0/8. Packets whose destination network is 11.0.0.0/8 will be forwarded from GigabitEthernet0/0/0 interface of the router.

The subnet mask of a network segment 150.25.0.0 is 255.255.224.0, then () is a valid host address in this network segment? (Multiple choice). 150.15.3.30. 150.25.0.0. 150.25.2.24. 150.25.1.255.

Which of the following features does the OSPF protocol have? (Multiple choice). Division of Support Regions. Prone to routing loops. Calculate the shortest path by hops. Trigger update.

On Huawei routers, the value of the static routing protocol priority by default is?. 120. 100. 0. 60_.

Which of the following descriptions about OSPF DD packets and LSAs is correct? (Multiple choice). The detailed information of the LSA is included in the DD message. The LSA header is only a small part of the LSA. The header of the LSA can uniquely identify an LSA. The DD packet contains only the header information of the LSA.