Estudos certificação 7

Regarding the IPv6 address 2031:0000:720C:0000:0000:09E0:839A:130B, which of the following abbreviations are correct? (Multiple choice). 2031:0:720C:0:0:9E0:839A:130B. 2031:0:720C::9E0:839A:130B. 2031:0:720C:0:0:9E:839A:1308. 2031::720C::9E0:839A:130B.

When the FIT AP goes online, it will definitely download the software version from the AC. True. False.

RSTP protocol uses P/A mechanism to speed up the speed of the upstream port to transfer to Forwarding state, but what is the reason why there is no temporary loop?. Through the synchronization mechanism to ensure that there will be no temporary loops. Shorten the time of Forward Delay. Speed up port role election. Introduced edge ports.

As shown in the figure below, all switches enable the STP protocol, and keep other configurations in the default state. When the network is stable, which of the following statements is correct? (Multiple choice). Both ports of SWC are in Forwarding state. Both ports of SWB are in Forwarding state. SWA is the root bridge in this network. SWB is the root bridge in this network.

By default, it takes at least 30 seconds for the port state in the STP protocol to change from Disabled to Forwarding state. True. False.

Huawei ARG3 series routers have all versions of SNMP (SNMPv1, SNMPv2c and SNIPv3) by default. True. False.

How many bytes is the total length of the VLAN frame format defined by IEEE802.1Q?. 4. 3. 2. 1.

What are the two stages of the PPPoE session establishment process? (Multiple choice). Discovery stage. PPPoE Session phase. PPP connecting stage. DHCP stage.

Which of the following statements about each version of the SNMP protocol is correct? (Multiple choice). SNMMPv3 messages have the functions of authentication and encryption. SNMPv2c follows the five protocol operations defined in v1 and adds two additional operations. SNMPv1 uses UDP as the transport layer protocol, while SNMPv2c and SNMPv3 use TCP as the transport layer protocol, so the reliability is higher. SNMPv2c messages have the functions of authentication and encryption.

In the network shown in the figure, the administrator hopes that all hosts cannot access the Internet every day from 8:00 to 17:00, which ACL rule should be bound to the traffic-filter outbound in the interface configuration of G0/0/1?. Time-range am9topm5 08:00 to 17:00 daily # Acl number 2001 Rule 5 deny time-range am9 to pm5 #. Time-range am9topm5 07:00 to 18:00 daily # Acl number 2002 Rule 5 permit time-range am9 to pm5 #. Time-range am9topm5 08:00 to 17:00 off-day # Acl number 2004 Rule 5 permit time-range am9 to pm5 #. Time-range am9topm5 08:00 to 17:00 working-day # Acl number 2003 Rule 5 deny time-range am9 to pm5 #.

Regarding the correspondence between access control list numbers and types, which of the following descriptions is correct? (Multiple choice). The advanced ACL number range is 3000-3999. The access control list number range of the second layer is 4000-4999. The interface-based access control list number range is 1000-2000. Based on the access control list number range is 1000-2999.

In the network shown in the figure, which of the following configurations can realize that host A cannot access the HTTP service of host B, and host B cannot access the FTP service of host A? (Multiple choice). acl number 3000 rule 5 deny tcp source 100.0.12.0 0.0.0.255 source-port eq www destination 100.0.13.0 0.0.0.255 # acl number 3001 rule 5 deny tcp source 100.0.13.0 0.0.0.255 source-port eq ftp destination 100.0.12.0 0.0.0.255 # Interface GigabitEthernet0/0/1 traffic-filter inbound acl 3000 # Interface GigabitEthernet0/0/2 traffic-filter inbound acl 3001 #. acl number 3000 rule 5 deny tcp source 100.0.13.0 0.0.0.255 destination 100.0.12.0 0.0.0.255 destination eq www # acl number 3001 rule 5 deny tcp source 100.0.12.0 0.0.0.255 destination 100.0.13.0 0.0.0.255 destination eq ftp # Interface GigabitEthernet0/0/1 traffic-filter inbound acl 3000 # Interface GigabitEthernet0/0/2 traffic-filter inbound acl 3001 #. acl number 3000 rule 5 deny tcp source 100.0.12.0 0.0.0.255 source-port eq www destination 100.0.13.0 0.0.0.255 # acl number 3001 rule 5 deny tcp source 100.0.13.0 0.0.0.255 source-port eq ftp destination 100.0.12.0 0.0.0.255 # Interface GigabitEthernet0/0/1 traffic-filter inbound acl 3000 # Interface GigabitEthernet0/0/2 traffic-filter inbound acl 3001 #. acl number 3000 rule 5 deny tcp source 100.0.13.0 0.0.0.255 destination 100.0.12.0 0.0.0.255 destination eq www # acl number 3001 rule 5 deny tcp source 100.0.12.0 0.0.0.255 destination 100.0.13.0 0.0.0.255 destination eq ftp # Interface GigabitEthernet0/0/1 traffic-filter inbound acl 3000 # Interface GigabitEthernet0/0/2 traffic-filter inbound acl 3001 #.

In the network shown in the figure, the administrator hopes that all hosts cannot access the Web service (port number is 80), and other services can be accessed normally. In the interface configuration of G0/0/1, which traffic-filter outbound needs to be bound ACL rule?. acl number 3002 rule 5 permit ip rule 10 deny tcp destination-port eq www #. acl number 3003 rule 5 permit ip rule 10 deny udp destination-port eq www #. acl number 3001 rule 5 deny udp destination-port eq www rule 10 permit ip #. acl number 3000 rule 5 deny tcp destination-port eq www rule 10 permit ip #.

A DHCP OFFER message can carry a DNS address, but only one DNS address can be carried. True. False.

Which of the following statements about Adjacency Segment is wrong?. Adjacency Segment is used to identify an adjacency of a node in the network. Adjacency Segment is identified by Adjacency Segment ID (SID). Adjacency Segment must be manually configured. The Adjacency Segment spreads to other network elements through the IGP protocol, which is globally visible and locally effective.

In order to distinguish different users and provide different network services on the AP, which of the following can be configured?. VAP. WAP. VAC. VT.

Which of the following commands can be used to check the session status of the PPPoE client?. display pppoe-client session packet. display pppoe-client session summary. display ip interface brief. display current-configuration.

Wireless access controller (AC, Access Controller) is a unified management and control device in the FIT AP architecture. Which of the following descriptions about the role of AC is wrong?. AP configuration delivery. User Access Control. User Access Authentication. Regardless of the data forwarding method, the user's data packets are forwarded by the AC.

1/128 is the IPv6 loopback address. True. False.

The host uses a stateless address auto-configuration scheme to obtain an IPv6 address, and cannot obtain DNS server address information. True. False.

Which of the following descriptions about switches is wrong?. Switches generally work at the data link layer. The switch can complete the exchange of data frames. The switch can provide network access services for terminal equipment (PC, server). The switch is generally used as the egress device of the network.

Regarding the configuration shown in the picture, which statement is correct? <Huawei>system-view [Huawei] user-interface console 0 [Huavei-ui-console0] history-command max-size 20. history-command max-size 20 is to adjust the size of the history naming cache to 20. The default size of the historical command cache is 5 bytes. After the above configuration is completed, the historical command cache can save 20 bytes of commands. The default size of the historical command cache is 5.

In the VRP system, what function does the Ctrl+Z key combination have? (Multiple choice). Exit user view from any view. Exit interface view. Exit current view. Exit the console interface view. Return from system view to user view.

Routers in the backbone area have complete link state information for all other areas. True. False.

The IPv4 address assigned by the network administrator to a certain host in the network is 192.168.1.1/28, how many more hosts can be added to the network where this host is located?. 13. 14. 15. 12.

Which packet does the OSPF protocol use to discover and maintain neighbor relationships?. HELLO. LSU. DD. LSR.

Which of the following descriptions about OSPF areas is correct? (Multiple choice). In configuring the OSPF area correctly, you must configure an IP address for the loopback interface of the router. The number of the backbone area cannot be 2. All networks should be declared in area 0. Zone numbers range from 0.0.0.0 to 255.255.255.255.

Which message does the OSPF protocol use to describe its own LSDB?. DD. LSR. LSU. HELLO.

Which of the following IPv4 addresses cannot be used by a host to directly access the Internet?. 50.1.1.1. 10.1.1.1. 100.1.1.1. 200.1.1.1.

In the network shown in the figure below, all links are Ethernet links, and all interfaces of all routers run the OSPF protocol, how many DRs are elected in the entire network?. 1. 2. 4. 3.

A gateway must be configured for a host to communicate with other hosts. True. False.

Which of the following statements about MPLS Label is wrong?. The label is carried in the header of the packet and does not contain topology information. Labels are encapsulated between the network layer and the transport layer. The label is used to uniquely identify the forwarding equivalence class FEC to which a packet belongs. A label is a short identifier with a fixed length and only local meaning.

The basic header length of an IPv6 packet is a fixed value. True. False.

How many port states exist in the RSTP protocol?. 1. 2. 3. 4.

In the network shown in the figure below, the switch uses the VLANIF interface to connect with the sub-interface of the router. Which of the following configurations can meet this requirement?. interface Vlanif10 ip address 10.0.12.1 255.255.255.0 # interface GigabitEthernet 0/0/2 port link-type trunk port trunk pvid 10 port trunk allow-pass vlan 10 #. interface Vlanif10 ip address 10.0.12.1 255.255.255.0 # interface GigabitEthernet 0/0/2 port link-type trunk port trunk allow-pass vlan 10 #. interface Vlanif10 ip address 10.0.12.1 255.255.255.0 # interface GigabitEthernet 0/0/2 port link-type hybrid port hybrid untag vlan 10 #. interface Vlanif10 ip address 10.0.12.1 255.255.255.0 # interface GigabitEthernet 0/0/2 port link-type access port default vlan 10 #.

Regarding conflict domains and broadcast domains, which description is correct? (Multiple choice). Devices connected to all ports of a Layer 2 switch with default configuration belong to a collision domain. The devices connected to all ports of a HUB belong to a broadcast domain. Devices connected to all ports on a HUB belong to a collision domain. The devices connected to a router belong to a broadcast domain. Devices connected to all ports of a Layer 2 switch with default configuration belong to a broadcast domain.

A Layer 2 Ethernet switch generates MAC address table entries based on the () of the Ethernet frame received by the port?. Destination MAC address. Destination IP address. Source IP address. Source MAC address.

The sub-interface output information of a certain router aggregation port 1 is shown in the figure. According to this information, which of the following statements is correct? (Multiple choice). The sub-interface number of the aggregation port is 100. The sub-interface of the aggregation port carries the VLAN when forwarding the data frame. There are two links on the aggregated port. The IP address of the sub-interface of the aggregation port is 10.0.12.2/24.

As shown in the figure, which one is correct about the description of this network topology?. There are 6 broadcast domains in this network. There are 12 collision domains in this network. There are 6 collision domains in this network. There are 2 broadcast domains in this network.

The switch receives a unicast data frame. If the destination MAC of the data frame can be found in the MAC table, the data frame will definitely be forwarded from the port corresponding to the MAC. True. False.

After successfully logging in to the router through Telnet, the administrator finds that the interface IP address of the router cannot be configured. So what are the possible reasons?. The authentication mode of the Telnet user is wrongly configured. The Telnet terminal software used by the administrator prohibits corresponding operations. Telnet user level configuration error. SNMMP parameter configuration error.

When a device running STP receives RSTP configuration BPDU, it will discard it. True. False.

In the STP protocol, which of the following factors will affect the election of the root switch? (Multiple choice). Switch priority. Switch interface ID. The IP address of the switch. Switch interface bandwidth. The MAC address of the switch.

What port states may exist in a switch with the standard STP protocol enabled? (Multiple choice). Discarding. Forwarding. Disabled. Listening.

Which of the following statements about the function of STP protocol Forward Delay is correct?. Improve the convergence speed of STP. Increase the life time of BPDU to ensure that the configuration BPDU can be forwarded to more switches. Prevent temporary loops. A delay is required when switching between the Blocking state and the Disabled state. Reduce the time interval for sending BPDUs.

On the router RTA, use the ACL matching routing entries as shown in the figure, which of the following entries will match? (Multiple choice) [RTA] acl 2002 [RTA-acl-basic-2002] rule deny source 172.16.1.1 0.0.0.0 [RTA-acl-basic-2002] rule deny source 172.16.0.0 0.255.0.0. 172.18.0.0/16. 172.16.1.0/24. 192.17.0.0/24. 172.16.1.1/32.

As shown in the figure below, router A has already Telnet router B through IP address 10.0.12.2. Under the current interface, which of the following operations will cause the Telnet session between router A and router B to be interrupted? (Multiple choice). Enable the OSPF protocol on the G0/0/1 interface. Configure static routing. Modify the IP address of the G0/0/1 interface. Close the G0/0/1 interface.

Which of the following statements about the usage scenarios of the DHCP protocol is correct?. After the DHCP continues to receive the DHCP request or response message, it will directly forward the message format without modifying the message format. Multiple DHCP servers are not allowed in the network. DCHP client and DHCP server must be connected to the same switch. If the DHCP client and the DHCP server are not in the same network segment, the DHCP message needs to be forwarded through the DHCP relay.

Which parameter is used in the spanning tree protocol for the election of the root bridge?. Bridge priority. Port ID. Root Path Cost. Bridge ID.