In the network shown in the figure, which of the following description is correct? The network between RTA and SWC is the same conflict domain The network between SWA and SWC is the same conflict domain The network between SWA and SWB is the same broadcast domain The network between SWA and SWC is the same broadcast domain .
By default, what is the STP Forward Delay time in seconds? 5 10 15 20.
To apply the ACL configured in the figure in Telnet, which of the following statements is correct? The device with IP address 172.16.105.4 can use Telnet service The device with IP address 172.16.105.3 can use Telnet service The device with IP address 172.16.105.5 can use Telnet service The device with IP address 172.16.105.6 can use Telnet service.
Which of the following fields is not included in the HELLO packet of the OSPF protocol? Neighbor Network Mask HelloInterval Sysname.
The host's IPv4 address is 200.200.200.201/30. Which of the following hosts has an IPv4 address
and its communication does not need to be forwarded by a router? 200.200.200.202 200.200.200.200 200.200.200.203 200.200.200.1.
Among the following commands to configure the default route, which one is correct? [Huawei-Seria10] ip route-static 0.0.0.0 0.0.0.0 0.0.0.0 [Huawei] ip route-static 0.0.0.0 0.0.0.0 192.168.1.1 [Huawei] ip route-static 0.0.0.0 0.0.0.0 0.0.0.0 [Huawei] ip route-static 0.0.0.0 255.255.255.255 192.168.1.1.
On Huawei AR G3 routers, what is the -i parameter of the Ping command in VRP used to set? The destination IP address of the Echo Reply message The source IP address of the Echo Request message Interface for receiving Echo Reply messages Interface for sending Echo Request messages.
In the switch MAC address table, which of the following entries will not age? Dynamic MAC address table entry Static MAC address table entry Port MAC address table entry
Device MAC address table entry.
What is the role of the command port trunk allow pass vlan all? If the port default vlan 3 command is configured for the connected remote device, VLAN 3 cannot
communicate between the two devices All VLAN data frames are allowed to pass through this port The connected peer device can dynamically determine which VLAN IDs are allowed to pass The opposite port connected to the port must be configured with port trunk permit vlan all.
In which working state of the STP protocol can the port be changed to the Forwarding state without
going through other states? Blocking Learning Listening
Disabled.
What is the coverage area of an AP in WLAN? BSS SSID BSSID ESS.
The network management workstation manages network equipment through the SNMP protocol.
When an abnormality occurs in the managed device, what kind of SHMP message will the network
management workstation receive? trap message get-response message set-request message get-request message.
What type of IPv6 address FE80: 2E0: FCFF: FE6F: 4F36 belongs to? Multicast address Link local address Global semicast address Anycast address.
Which of the following IEEE802.11 standards only supports 2.4GHz frequency band for
communication? 802.11a 802.11g 802.11ax 802.11n .
If the MAC address of an interface is 0OEO-FCEF-OFEC, what is its corresponding EUI-64
address? 00E0-FCEF-FFFE-0FEC 02E0-FCFF-FEEF-0FEC 00E0-FCFF-FEEF-0FEC 02E0-FCEF-FFFE-0FEC.
Which of the following description of static and dynamic routing is wrong? Dynamic routing protocols take up more system resources than static routing protocols. After the link fails, the static route can automatically complete the network convergence. After the administrator deploys the dynamic routing protocol in the corporate network, later
maintenance and expansion can be more convenient Static routing is simple to configure and easy to manage when applied in the enterprise.
The Layer 2 Ethernet switch generates entries in the MAC address table according to the ( ) of the
Ethernet frame received by the port. Source IP address Source MAC address Destination MAC address Destination IP address
.
The MAC address table of existing switches is shown in the figure. Which of the following statement
is correct? The MAC address 5489-9885-18a8 is manually configured by the administrator The MAC address 5489-9811-0b49 is manually configured by the administrator The MAC address 5489-989d-1d30 is manually configured by the administrator After the switch restarts, all MAC addresses need to be relearned .
Which of the following levels is not a common network level in mid-sized campus network
architecture? Access layer Core layer Convergence layer Network layer.
Which stage of the life cycle of campus network construction is the beginning of a project? Network optimization Network implementation Planning and design Network operation and maintenance.
When the router is powered on, it will read the configuration file from the default storage path to
initialize the router. If there is no configuration file in the default storage path, what will the router use for
initialization? Initial configuration Current configuration New configuration Default parameters.
If the network address of a network is 10.1.1.0/30, what is its broadcast address? 10.1.1.2 10.1.1.3 10.1.1.4 10.1.1.1.
If the broadcast address of a network is 172.16.1.255, what might its network address be? 172.16.2.0 172.16.1.128 172.16.1.1 172.16.1.253.
When the IPv4 protocol is used as the network layer protocol, which field is not included in the
network layer header? Source IPv4 address Sequence number Destination IPv4 address TTL.
What kind of message does the OSPF protocol use to send LSA to neighbors? LSU LSACK LSR LSA.
Regarding the corresponding relationship between the access control list number and type, which of
the following description is correct? The basic access control list number range is 1000-2999 The access control list number range of the second layer is 4000-4999 The number range of interface-based access control list is 1000-2000 The range of advanced access control list numbers is 3000-4000.
What is the destination IP address of the DHCP DISCOER message? 127.0.0.1 224.0.0.1 224.0.0.2 255.255.255.255.
In the history of WLAN development, which of the following is not included in the main wireless
protocol standards in the primary mobile office era? 802.11g 802.11a 802.11b 802.11ac.
In order to distinguish different users and provide different network services on the AP. Which of the
following can be configured? VT VAP VAC WAP.
Which of the following methods can read data non-blocking in Python's telnetlib? telnet_Read_all telnet_read_very_lazy telnet_read_eager telnet_read _very_eager.
Which of the following commands can modify the device name to huawei? Hostname Huawei Sysname Huawei Rename Huawei Do name Huawei
.
Which statement is wrong about the ARP message? ARP reply packets are sent unicast Any link layer protocol requires ARP messages to assist in obtaining data link layer identification ARP packets cannot be forwarded to other broadcast domains ARP request message is sent by broadcast.
Which statement about OSPF protocol DR is correct? DR must be the highest priority device in the network Router ID, the larger the value, the more preferred to be elected as DR DR election is preemptive An interface priority is 0, then the interface cannot be a DR.
The following rules exist in a certain ACL of the router. rule deny tcp source 192.168.1.0 0.0.0.255
destination 172.16.10.1 0.0.0.0 destination-port eq 21 Which statement is correct? The source IP is 192.168.1.1, the destination IP is 172.16.10.1, and all TCP packets whose destination
port number is 21 match this rule The source IP is 192.168.1.1, the destination IP is 172.16.10.2, and all 1CP packets whose destination
port number is 21 match this one The source IP of the rule is 192.168.1.1, the destination IP is 72.16.10.3. All TCP packets with the
destination port number of 21 match this rule The type of ACL is a basic ACL.
Which of the following parameters cannot be used in the advanced visit control list? Protocol number Destination port number Physical interface Time range.
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
on router A at this time? 1 2 3 4.
Which type of message is used by network devices running SNMPv 1 protocol to actively send alarm
information? Trap Response Get Request Get-Next Request .
By default, network devices running SNMPv2c protocol use which of the following port numbers to
send trap messages to the network management system? 6 161 17 162.
Which of the following types of addresses is not included in IPv6 addresses? Anycast address Broadcast address Unicast address Multicast address.
Which of the following statements about Trunk port and Access port are correct? Trunk ports can only send untagged frames Access port can only send tagged frames Trunk ports can only send tagged frames Access port can only send untagged frames.
What is the length of the Ethernet_II frame containing the Ethernet header? 60-1560B 46-1500B 64-1500B 64-1518B.
Which of the following advantages does the router-on-a-stick approach achieve routing
intercommunication between VLANs? Reduce the number of equipment Reduce routing table entries Reduce the use of IP addresses Reduce the number of chain connections.
When the host frequently moves, which VLAN division method is most appropriate? Based on AC address division Based on strategy division Based on IP subnet division Based on port division.
On the VRP platform, what is the role of the command "interface vlanit <vlan-id>" ? Create a VLAN No such command Create or enter VLAN virtual interface view Configure VLAN for a port.
In the network shown in the figure below, all routers run the OSPF protocol, and the link cost value is
shown in the figure. What is the cost value of the route entry to the network 10.0.0.0/8 in the RTA routing
table? 70 100 20 60.
The router output information is shown in the figure. Which of the following statements is wrong? The IP address of the Ethernet0/0/0 interface is 10.0.12.1/24 The MTU value of the Ethgrnet0/0/0 interface is 1480 The physical link of the Ethernet0/0/0 interface is normal The broadcast address corresponding to the Ethernet0/0/0 interface is 10.0.12.255.
As shown in the figure below, which of the following statement is correct? Host A can ping host B Only when the masks of host A and host B are set to always, host A and host B can communicate The broadcast address of host A and host B are the same The IP address masks of host A and host B are different, so host A and host B cannot communicate.
ip route-static 10.0.12.0 255.255.255.0 192.168.1.1, which description about this command is
correct? This command configures a route to the 10.0.12.0 network The priority of this route is 100 If the router learns a router with the same destination network as this route through other protocols, the
router will prefer this route This command configures a route to the 192.168.1.1 network .
What address does 192.168.1.127/25 represent? Broadcast Multicast Network Host.
What are the characteristics of VLAN based on port? Add VLAN tags to the data frame according to the IP address carried in the message Assign VLAN ID according to the protocol type and encapsulation format of the data frame No need to reconfigure VLAN when the host moves The host mobile location needs to be reconfigured VLAN.
The configuration information of a interface of the router is shown in the figure, then which VILAN
data packet can this port receive?
interface Gigabit Ethernet 0/0/2.30
dot1q terainat1on vid 100
ip address 1o.o.21.1 255.255.255.0
arp broadcast enable 1 100 30 20.
In a Layer 2 network with redundant links, which of the following protocols can be used to avoid
loops? VRRP ARP UDP STP.
The output information of a switch is shown in the figure. Which of the following interfaces can
forward data frames with VLAN ID 40 and do not carry tags when forwarding? GE0/0/2 GE0/0/5 GE0/0/3 GE0/0/4 .
Which of the following packet types is used by RADIUS to indicate authentication rejection? Access-Accept Access-Request Access-Challenge Access-Reject.
Which of the following authentication methods does not require the user name and password? authentication-mode local authentication-mode none authorization-mode hwtacacs Authentication-mode hwtacacs.
CAPWAP protocol stipulates the communication standard between AC and Ap. Which of the
following statements about CAPWAP protocol is correct? CAPWAP is an application layer protocol based on TCP transmission In order to establish a CAPWAP tunnel, FIT Ap can only discover AC through broadcast messages CAPWAP In order to reduce the burden on the AP, a tunnel is used to transmit control messages and
data messages at the same time AP can encapsulate the user's data message in CAPWAP and forward it by AC
.
The wireless access controller (AC, Access Cntroller) is the unified management and control device
in the FIT AP architecture. Which of the following description of the role of AC is wrong? No matter when the data is forwarded, the user's data message will be forwarded by AC User access control User access authentication AP configuration delivery
.
How many more bytes are the packets using MPLS label double-layer nesting technology than the
original IP packets? 32 8 4 16.
Which of the following IPv6 is a global unicast address? 2001::12:1 FF02::1 FF::02::2E0:FCFF:FEEF:FEC FEE:FCFF:FEEF:FEC.
In the campus network planning, which of the following ways can business VLAN be divided? Divide vlan by access member structure Divide VLAN by business Divide VLAN by logical area Divide VLAN by geographical area.
When configuring the router through the Console, what is the correct setting of the terminal
emulation program? 19200bps, 8 data bits, 1 stop bit, no checksum and no flow control 9600bps, 8 data bits, 1 stop bit, even parity and hardware flow control 9600bps, 8 data bits, 1 stop bit, no checksum and no flow control 4800bps, 8 data bits, 1 stop bit, odd checksum and no flow control.
What is the protocol number corresponding to the ospf protocol at the network layer? 89 6 0 1.
As shown in the figure below, all hosts can pass normally, so what is correct about the
correspondence between the MAC address and the port in the MAC table of the SWB? MAC-A GO/0/2
MAC-B G0/0/2
MAC-C G0/0/3 MAC-A G0/0/3
MAC-B G0/0/3
MAC-C GO/0/1
MAC-A G0/0/1
MAC-B G0/0/1
MAC-C G0/0/3
MAC-A G0/0/1
MAC-B G0/0/2
MAC-C G0/0/3
.
Which of the following statements about the role of STP protocol Forward Delay is correct? Prevent temporary loops There is a delay when the B1ocking state and the Disabled state are converted Reduce the time interval of BPDu sending. Improve the convergence speed of STP Improve the survival time of BPDUs to ensure that the configured BPDUs can be forwarded to more
switches.
The configuration information of a certain port of the switch is shown in the figure. Which of the
following statements is wrong? The port type is Hybrid If the port receives a data frame without VLAN TAG, the switch needs to add VLAN TAG 100 If the VLAN TAG carried in the data frame is 200, the switch strips off the VLAN TAG If the VLAN TAG carried in the data frame is 100, the switch will strip off the VLAN TAG and send it out.
Which of the following statements about VLANIF interfaces are correct? VANIF interface does not need to learn MAC address VLANIF interface has no MAC address Different VLANIF interfaces can use the same IP address VLANIF interface is a three-layer interface.
Which of the following statements about the edge port in the RSTP protocol is correct? The edge port discards the received configuration BPDU packet The edge port can be directly transferred from Disable to Forwarding state Edge port participates in RSTP operation The interconnection ports between switches need to be set as edge ports.
A certain ACL of the router is in the following rules, rule deny source 192.168.2.0 0.0.0.255
destination 172.16.10.2 0.0.0.0 Which statement is correct? All TCP packets whose source IP is 172.16.10.2. Destination IP is 192.168.2.1 match this rule All TCP packets whose source IP is 192.168.2.1 and destination IP is 172.16.10.1 match this rule
All TCP packets whose source IP is 172.16.10.2 and destination IP 192.168.2.0 match this rule All TCP packets whose source IP is 192.168.2.1 and destination IP is 172.16.10.2 are configured with this rule.
What kind of message does the DHCP server use to confirm that the host can use the IP address? DHCP DISCOVER DHCP ACK DHCP OFFER DHCP REQUSET.
The administrator has configured the router as shown in the figure, then what IP address can a host
connected to the G1/0/0 interface of the router obtain through DHCP? The IP address data obtained by the host 10.10.10.0/24 The IP address obtained by the host may belong to the 10.10.10.0/24 network, or it may belong to the 10.20.20.0/24 network The host cannot obtain an IP address The IP address obtained by the host belongs to the 10.20.20.0/24 network
.
On the VRP operating platform, what is the command to display the current interface configuration in
the interface view? display users display version display this display ip interfacebrief.
On the VRP platform, which of the following methods can be used to access the previous history
commands? Ctr1+U Ctr1+P Left cursor Up cursor.
The subnet mask of a network segment 150.25.0.O is 255.255.224.0, then what is a valid host
address in the network segment? 150.25.2.24 150.25.0.0 150.25.1.255 150.15.3.30.
Which of the following statement about the TTL field in the IP packet header is correct? TTL defines the time interval at which the source host can send data packets TTL defines the number of packets that the source host can send Every time an IP packet passes through a router, its TTL value will be reduced by 1 Each time an IP packet passes through a router, its TTL value will be increased by 1
.
It is known that there are two entries in the routing table of a router. If the router wants to forward
packets with the destination address of 9.1.4.5, which of the following statements is correct? Choose the second item as the best matching item, because the cost of the RIP protocol is small Select the second item as the best matching item, because the route is a more accurate match relative
to the destination 9.1.4.5 Choose the second item as the best match, because Ethernet0 is faster than serial0 Select the first item as the best matching item, because the priority value of the ospf protocol is higher
.
When the LACP mode is used for link aggregation, what is the default system interference level of
Huawei switches? 36864 4096 24576 32768.
After the network administrator uses the TracertRoute function on the router device, in the data
packet sent by the router, what is the value of the Protoco1 field in the IPv4 header? 17 2 6 1.
The information shown in the figure is the port status information displayed on a switch running STP.
According to this information, which of the following description is wrong? The priority of this switch is 0 This network may only contain this switch
This switch may be connected to six other switches This switch is the root switch in the network
.
Two authentication domains "Area1" and "Area 2" are configured on a router acting as an
authentication server. If the user authenticates with the correct user name "huawei" and password "hello",
this user will be assigned In which authentication domain? Authentication domain "Area 1" Authentication domain "default domain" Authentication domain "default_admin domain" Authentication domain "Area2".
As shown in the figure, the G0/0/0 and G0/0/1 interfaces of RTA are connected to two different network segments. RTA is the gateway of these two networks. Before host A sends data to host C, will it send an ARP Request to obtain O's MAC address? (Single-choice question) SW G0/0/1 interface of RTA G0/0/0 interface of RTA Host C.
The administrator has configured the router as shown in the figure. Then a host connected to the G1/0/0 interface of the router. What kind of IP address can be obtained through DHCP? (Single- choice question) The IP address obtained by the host belongs to the 10.10.10.0/24 network The IP address obtained by the host belongs to the 10.20.20.0/24 network The IP address obtained by the host may belong to the 10.10.10.0/24 network, or it may belong to the 10.20.20.0/24 network The host cannot get an address.
What is the length of the basic IPv6 header in bytes? 64 32 40 48.
UDP is oriented to connectionless and must rely on to ensure the reliability of transmission. Internet Protocol Transmission Control Protocol Network layer protocol Application layer protocol.
To ensure that the same data stream is forwarded on the same physical link, which load sharing method does Eth Trunk use? Flow-based load sharing Load sharing based on data packet inbound interface Packet-based load sharing Load sharing based on application layer information.
The network administrator has captured a data frame on the network, and its destination MAC address is 01-00-5E-A0-B1-C3. The correct statement about the MAC. address is. It is an illegal MAC address It is a multicast MAC address It is a unicast MAC address It is a broadcast MAC address.
As shown in the figure below, in the MAC address table of the network. SWA and SWB, which of the MAC addresses, VLANs, and ports are correct? (Single choice question) SWA: MAC
Address VLAN
Port MAC-A MAC-B MAC-C 10
GEC/0/3
20
GEC/0/3
GEC/0/3
100 SWB:
MAC Address VLAN Port
MAC-A MAC-B MAC-C 10
GEC/0/3
GEC/0/3
GEC/0/1
20
100 SWB:
MAC Address VLAN
Port MAC-A MAC-B MAC-C 100
200
100
GEC/0/3
GEC/0/3
GEC/0/1 SWA:
MAC Address
VLAN Port MAC-A MAC-B MAC-C
10
GEC/O/1
GEC/0/2
GEC/0/3
20
100.
In the figure below, all switches have enabled the STP protocol, assuming that the path cost value of all ports is 200. What is the root path cost value contained in the configuration BPDU message received by the G0/0/4 port of SWD? (Single-choice question) 600 0 400 200.
Which of the following commands can be used to check the session status of the PPPoE client? () display ip interface brief display pppoe-client session packet display pppoe-client session summary display current configuration.
Basic ACL number value range. 2000-2999 3000-3999 4000-4999 1000-1999.
As shown in the figure below, what kind of network equipment can host A and host B use to communicate? (Single-choice question) HUB Router Layer 2 switch Hub.
The MAC address table of a certain switch is shown in the figure. If the switch receives a data frame with a destination MAC of 54899811-0b49 from port Eth0/0/2, which of the following statements is correct? Flood out this data frame Forward this data frame from the Eth0/0/3 port Forward this data frame from the Eth0/0/2 port Discard this data frame.
Two switches use manual link aggregation at the same time. The following statement is wrong. (Single-choice question) Only switch off G0/0/1 port on switch B. The Eth-Trunk status is still UP Turn off the G0/0/1 and G0/0/2 ports on switch B. The Eth-Trunk status is down Turn off the G0/0/1 and G0/0/2 ports on switch B, and the Eth Trunk status is still UP Only switch off G0/0/2 port on switch B. The Eth-Trunk status is still UP.
Which of the following information is not included in the MAC address table of the switch? MAC Address IP address The port number VLAN.
In the VRP system, what function does the Ctrl+Z key combination have? Exit the current view Exit the console interface view Return to user view from any view Return from system view to user view Exit interface view.
As shown in the figure, two hosts realize communication between TAs through single-arm routing. When the G0/0/1.2 sub-interface of RTA. receives the data frame sent by host B. to host A., RTA. will execute which of the following Operation? RTA. First delete VLAN tag 20, then add VLAN tag 10, and then send it out via G0/0/1.1 interface RTA. The data frame will be discarded RTA. Forward the data frame directly through the G0/0/1.1 sub-interface RTA. After deleting VLAN tag 20, it will be sent out by G0/0/1.1 interface.
As shown in the figure, two switches use the default parameters to run STP root primary; Switch B uses the configuration command STP priority 0. Then which port will be blocked (Single-choice question) G0/0/2 of switch A G0/0/1 of switch A G0/0/1 of switch B G0/0/3 of HUB.
How many UDP and TCP has Transport Layer protocols used in TCP/IP networks? 3 2 1 4.
Which layer of protocol does ARP belong to Physical layer Network layer Transport layer Data link layer.
As shown in the figure, the network administrator creates VLAN2 on SWA and SWB. The ports connecting the hosts on the two switches are configured as Access ports. They are assigned to VLAN2. G0/0/1 of SWA and G0/0/2 of SWB are configured as Trunki ports. All VLANs are allowed to pass. What is needed to achieve normal communication between two hosts? (Single-choice question) Create VLAN2 on SWC, configure G0/0/1 and G0/0/2 as trunk ports, and allow VLAN2 to pass Configure G0/0/1 on SWC as a trunk port and allow VLAN2 to pass. Set G0/0/2 as an access port. PVID is 2. Configure G0/0/1 on SWC as a trunk port and allow VLAN2 to pass through Just create BLAN2 on SWC.
When a switch receives a unicast data frame with a VLAN tag, but finds that the destination MAC address of the data frame cannot be queried in its MAC address table, the switch's processing behavior for the data frame is. The switch will broadcast this data frame to all ports (except the receiving port) in the VLAN where the data frame is located The switch will broadcast the data frame to all ports The switch will broadcast this data frame to all Access ports The switch will discard this data frame.
As shown in the figure below. All hosts can communicate normally. Is the corresponding relationship between SWA MAC address and port
correct? (Single-choice question) MAC-A GO/0/1
MAC-B GO/0/1
MAC-C GO/0/3 MAC-A GO/0/1
MAC-B G0/0/2
MAC-C G0/0/1 MAC-A G0/0/2
MAC-B GO/0/2
MAC-C GO/0/3 MAC-A GO/0/1
MAC-B GO/0/2
MAC-C GO/0/3.
Which of the following address types does IPV6 have?
Link local address Multicast address Broadcast address (wrong if multiple choice) Unicast address Anycast address.
ARP request is sent by ?
Unicast Broadcast Multicast There are broadcast and unicast.
An ACL rule is as follows: Which of the following IP addresses can be matched by permit rules? rule5 permit ip source 10.0.2.00.0.254.255
10.0.5.6 10.0.2.1 10.0.6.7 10.0.4.5.
The administrator wants to allocate a Hundred public address on the G0/0/0 interface of the router. Which of the following addresses is correct?
145.4.2.55/26 192.168.10.112/30 127.3.1.4/28 237.6.1.2/24.
What kind of packets does the OSPF protocol use to request LSAs that are missing locally? LSU (correct if multiple choice) LSACK LSR HELLO.
The role of the OSPF protocol is ? Transmit MAC information No effect Pass ARP information Pass routing information.
The FIT AP can obtain the IP address of AC. through the DHCP Option to establish a CAPWAP tunnel. Which Option needs to be configured on the DHCP server for this? Option 10 Option 43 Option 55 Option 82.
The IPv4 address assigned by the network administrator to a host in the network is 192.168.128, how many more hosts can be added to the network where this host is located? 12 14 15 13.
What is the length of the Ethernet II frame containing the Ethernet header?
60-1560B 46-1500B 64-1518B 64-1500B.
The output information of the STP port of a certain switch is shown in the figure. Which of the following statements is wrong?
Forward-delay is 20s Configure the MaxAge of the BPDU to 20s The period for sending configuration BPDUs on this port is 2s The switch is not a root bridge.
Regarding the configuration shown in the figure, which statement is correct? After the above configuration is completed, the history command buffer can store 20 bytes of commands The default size of the history command cache is 5 The default size of the history command cache is 5 bytes history-command max-size20 is to adjust the size of the history named cache to 20.
Which of the following protocols is OSPF based on?
TCP IP UDP HTTP.
As shown in the figure below. Which port of the following switches will be blocked? G0/0/3 of SWB SWA's G0/0/3 SWC's G0/0/2 SWC's G0/0/1.
Which of the following IPv6 addresses can be abbreviated as 2FFF DAC:ABEF:CDAA:732? 2FFF:ODAC:ABEF:0000:0000:0000:CDAA:7320 2FFF DACO:ABEF 0000000:0000:CDAA:0732 2FFF:ODAC:ABEF 0000:0000:CDAA:0732 2FFF:ODAC.:ABEF:0000:0000:0000:CDAA4:0732.
Network as shown in the picture. The vadministrator hopes that all hosts cannot access the Web service (the port number is 80). Other services can be accessed normally. In the interface configuration of G0/0/1, which ACL rule needs to be bound to trattie-frilter outbound? acl number 3003
Rule 5 permit ip
Rule 10 deny udp destination-port eq ww# acl number 3001
Rule 5 deny udp destination-port eq ww
Rule 10 permit ip
# acl number 3000
Rule 5 deny tcp destination-port eq www Rule 10 permit ip
# ule 5 permit ip
ARule 10 deny top destination-port eq ww#.
By default, what is the period for sending OSPF HELLO packets on the broadcast network? 40s 20s 10s 30s.
All the devices in the picture can communicate normally.
Is the corresponding relationship between the MAC
address table of SWA and the port correct? MAC-AG0/0/2
MAC-BG0/0/2
MAC-CG0/0/3 MAC-AG0/0/1
MAC-BG0/0/2
MAC-CG0/0/1 MAC-A--GO/0/1
MAC-B-G0/0/2
MAC-C-GO/0/3 MAC-A--GO/0/1
MAC-B--G0/0/1
MAC-C--GO/0/3.
What is the number range of the Layer 2 ACL?
4000～4999 6000～6031 3000-3999 2000-2999.
When a company's network management needs to plan the network, the data packets that allow PC1 to access PC2 go through the G0/0/0 port (G0/0/2 on the picture). The data packet that PC2 accesses to PC1 goes from port G0/0/4 (G0/0/0 in the picture). 10.0.12.5255.255.255.25511.0.12.210.
0.12.1255.255.255.25511.0.12.5 10.0.12.5255.255.255.25511.0.12.6
#10.0.12.1255.255.255.25511.0.12.1 0.0.0.00.0.0.00
#11.0.12.6
#11.0.12.1 0.0.0.0
#0.0.0.0
0
#11.0.12.2
#11.0.12.5
0.
The network shown in the figure below. The network where host A is required to access the Internet through Easy IP, then which of the following ACLs should be used on the G0/0/3 interface of router A? acl number 2000 Rule 5 permit source 10.0.13.1.0.0.0.0 acl number 2000 Rule 5 permit source 10.0.12.0.0.0.0.255# acl number 2000 Rule 5 permit source 10.0.12.1.0.0.0.0# acl number 2000 Rule 5 permit source 10.0.13.0.0.0.0.255#.
As shown in the figure, there are three data packets captured by the administrator on thenetwork. Which of the following statements is incorrect?
Source destination protocol info
10.0.12.110.0.12.2TCp50190>telnet［SYN］seq＝0win＝8192Len＝0mss＝
146010.0.12.210.0.12.1
TCP telnet:50190 SYN, ACK seg-0 Ack-1 win-8192 Len-0mss=1460
10.0.12.110.0.12.2 TCP50190>telnet(ACK)seq-1Ack=1win=81921en=0 The telnet client uses port 50190 to establish a connection with the server The IP address of the telnet server is 10.0.12.1. The IP address of the telnet client is 10.0.12.2 These three data packets represent the three-way handshake process of TCP None of these three data packets contain application layer data.
If the administrator wants to completely delete the old device configuration file, the following command is correct .
delete /force config.zip reset config.zip clear config.zip delete /unreserve.config.zip.
he network shown in the figure below. Two switches are connected by four links. COPPER refers to electrical interface and FIBER refers to
optical interface. Then which two interfaces can realize link aggregation? G0/0/3 and FE0/0/3 G0/0/2 and G0/0/1 G0/0/2 and FE0/0/3 G0/0/3 and G0/0/2.
In the network shown in the figure below, the switch uses VLANIF interfaces to connect with the router sub-interfaces. Which of the following configurations can achieve this requirement? interface Vlanif10
Ip address10.0.12.1255.255.255.0
#
Interface GigabitEthernet 0/0/2
Port link-type trunk
Port trunk pvid 10
Port trunk allow-pass vlan 10
# interface Vlanif10
Ip address10.0.12.1255.255.255.0# Interface GigabitEthernet 0/0/2
Port link-type access
Port default vlan 10 interface Vlanif10
Ip address10.0.12.1255.255.255.0# Interface GigabitEthernet 0/0/2
Port link-type trunk
Port trunk allow-pass vlan 10
# interface Vlanif10
Ip address10.0.12.1255.255.255.0# Interface GigabitEthernet 0/0/267
Port link-type hybrid
Port hybrid untag vlan 10
#.
As shown in the figure, when the switch needs to forward frames with the destination mac address of 5489-98ec-f011, which of the following descriptions is correct? The switch did not find a matching entry in the mac address table. So the frame will be discarded The switch needs to send a request to discover the device with the mac address of 548998ec-f011 The switch will send a message that the destination is unreachable to the source device The switch will be All ports outside flood the frame.
he two switches shown in the figure below have both enabled the STP protocol, which port will eventually be in the Blocking state? STB's G0/0/3 port G0/0/2 port of STA G0/0/3 port of STA G0/0/2 terminal C of STB.
What is wrong about the description of the information as shown in the figure?
(RI) display interface g0/0/0
GlgabltEtherneto/0/0 current state :Adainistratively DOWN Line protocol current
state
:DOWN GigbitEthernet (/0/0 interface is connected to a wrong cable The GigbitEthernet0/0/0 interface was manually closed by the
administrator The GigbitEthernet0/0/0 interface is not configured with an IP address GigbitEthernet (0/0/0 interface does not enable dynamic routing protocol.
In the network shown in the figure below, switch A and router A are connected by two links, and the two links are aggregated in manual load sharing mode. The aggregated port number is 1, and the aggregated link performs data forwarding It needs to carry VLAN TAG100, and switch A uses trunk link. Which of the following configurations should be used for switch A? interface Vlanif 100
Ip address10.0.12.1255.255.255.0
# interface Eth-Trunk 1
Ip address10.0.12.1255.255.255.0
# interface Eth-Trunk 1
Port link-type trunk
Port trunk allow-pass vlan 100#
Interface GigabitEthernet0/0/1Eth-trunk 1
#
Interface GigabitEthernet0/0/2Eth-trunk 1
# interface Eth-Trunk 1
Mode lacp-static
Port link-type trunk
Port trunk allow-pass vlan 100#
Interface GigabitEthernet0/0/1Eth-trunk 1
#
Interface GigabitEthernet0/0/2Eth-trunk 1
#.
Use the ACL shown in the figure on the router RTA to match routing entries. Then which of the following entries will be matched?
(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 0.255.0.0 172.16.1.1/24 172.18.0.0/16 172.16.1.0/24 192.17.0.0/24.
NAPT allows multiple private IP addresses to be mapped to the same public P address through different port numbers. The following description of the port number in NAPT is correct . No need to do any configuration about port number Only need to configure the range of port numbers The correspondence between port numbers and private addresses must be manually configured Need to use ACL to assign port numbers.
Which of the following commands configures the authentication mode as HWTACACS authentication? authentication-mode hwtacacs authorization mode hwtacacs authentication-mode none authentication-mode local.
What is RouterDeadInterval of the OSPF protocol on the broadcast network by default? 10s 30s 40s 20s.
As shown in the picture. About OSPF topology and configuration. Which of the following statements is correct? 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 R1 and R2 can establish a stable OSPF 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 R1 is more likely to become DR than R2, because its interface DR priority value is smaller.
The output information of the router is shown in the figure. Which of the following statements is wrong?(Single-choice question) The broadcast address corresponding to the___________. Ethernet0/0/0 interface the MTU value is 1480
Ethernet the IP address of the 0/0/0 interface is 10.0.12.1/24 The physical link of the Ethernet0/0/0 interface is normal Ethernet0/0/0 interface is 10.0.12.255.
The network is shown in the figure. Which router is the BDR in this network? Router A Router C Router B No BDR.
Which of the following parameters is used in LCP negotiation to detect link loops and other abnormal conditions?
Magic word MRU PAP CHAP.
Which of the following statements about the usage scenarios of the DHCP protocol is correct? DHCP client and DHCP server must be connected to the same switch After receiving the DHCP request or response message, the DHCP relay does not modify the message format and forwards it directly If the DHCP client and the DHCP server are not on the same network segment, the DHCP relay needs to be used to forward DHCP messages Network does not allow multiple DHCP servers.
The ACL configuration information of a certain router is shown in the figure. Which of the following statements is correct? The packet with the source IP address of 192.168.1.1 is matched by the pemit rule The packet whose source IP address is 192.168.1.254 is matched by the permit rule Packets with source IP addresses of 192.168.1.1 and 192.168.1.254 are matched by the permit rule The packet with the source IP address 192.168.1.1 is matched by the deny rule.
What is wrong about the following description of the router? The router works at the network layer The router can be used as a gateway device The router can realize IP packet forwarding The router cannot isolate the broadcast domain.
What is the default step length of ACL on AR G3 series routers? 5 15 10 20.
In the network shown in the figure below, the router receives a data packet with a destination IP address of 11.0.12.1 from host A. This data packet is forwarded by the router. What are the destination MAC and destination IP? MAC-B 11.0.12.1 MAC-C 11.0.12.1 MAC-D 11.0.12.1 MAC-D 10.0.12.2.
The configuration information of a certain port of the switch is shown in the figure. What is the PVID of this port? 100 4 2 1.
Three Layer 2 switches are interconnected with one HUB. The switches are all enabled with STP bridge ID. Refer to the figure below. What are the default errors of other configurations? G0/0/2 of SWA is blocked
SWA is the root bridge in the simple network G0/0/1 of SWC is alternative. It is in blocking state The two ports on SWA are designated ports and are in the forwarding state.
The mask length is 12 bits can be expressed as?
255.255.255.0 255.255.0.0 255.240.0.0 255.248.0.0.
The administrator made the configuration on the router as shown in the figure. At the same time, the administrator wants to assign a shorter lease period to the DHCP address. Which of the following commands should be used?
ip
pool
pooll
netyork10.10.10.0ask255.255.255.0
gateway-list
10.10.10.1 Lease day 0 hour 10 Lease 0 Lease 24 Dhcp select relay.
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