NEW QUESTION 227
The mask length is 12 bits, which can be expressed as?

NEW QUESTION 228
On the switch, vlan batch can be used to create vlans in batches to simplify configuration.

NEW QUESTION 229
An Ethernet frame was captured by a packet capture tool, and the value of the Type/Length field of the frame was found to be 0x0800. Which of the following descriptions of the frame is correct? (Multiple choice)

NEW QUESTION 230
Layer 2 ACL can match source MAC, destination MAC, source ip, destination IP and other information.

NEW QUESTION 231
The network structure and OSPF partitions are shown in the figure. Except for RTA in the figure, routers RTB, RTC and RTD are all ABR routers.

NEW QUESTION 232
What are the reasons why DHCP face many security threats? (Multiple choice)

NEW QUESTION 233
As shown in the figure, you only need to configure static routing on R1, and the two hosts can communicate with each other normally.

NEW QUESTION 234
If the Proto of a certain routing information in the routing table is OSPF, then the priority of this routing must be 10.

NEW QUESTION 235
The QoS technology usually used for congestion avoidance is?

NEW QUESTION 236
During campus network planning, service VLANs can be divided according to which of the following methods? (Multiple choice)

NEW QUESTION 237
As shown in the figure, three Layer 2 switches are interconnected with a HUB, and the STP function is enabled on the switches. Please refer to the figure below for the STP bridge ID settings of the switches, and the others are default configurations.

Which of the following statement is wrong?

NEW QUESTION 238
Which of the following stages is not included in the process of PPPoE session establishment and termination?

NEW QUESTION 239
VRRP packets do not support authentication.

NEW QUESTION 240
Which of the following descriptions about switches is wrong?

NEW QUESTION 241
What is the Solicited-node multicast address corresponding to the IPv6 address 2019::8:AB?

NEW QUESTION 242
The discarding strategy in the congestion avoidance mechanism, which does not include? (Multiple choice)

NEW QUESTION 243
RADIUS is a common protocol for implementing AAA.

NEW QUESTION 244
Assume that there are four flows a, b, c, and d each of which are 50M, and the total port bandwidth is 100M. Traffic congestion occurs, and congestion management is performed on it. Among them, traffic a belongs to PQ queue scheduling, traffic b, c, and d belong to WFQ queue scheduling, and the weight ratio is 1:2:2. Regarding the description of the scheduling results of the four flows, which is wrong? (Multiple choice)

NEW QUESTION 245
Which of the following are the basic parameters for configuring static routing? (Multiple choice)

NEW QUESTION 246
OSPFV2 supports IPv6 by adding a new type of LSA.

NEW QUESTION 247
Which field is added to the IPv6 header compared to the IPv4 header?

NEW QUESTION 248
How many more bytes does the MPLS-labeled packet have than the original IP packet?