What is the correct statement about free ARP? (multiple choice)
A. By sending a free ARP, you can confirm whether the IP address has a conflict.
B. The free ARP packet format belongs to the AR request packet.
C. Free ARP helps update old IP address information
D. The free ARP packet format belongs to the ARP reply packet.
Similar to the OSI model, the TCP/IP model also uses a hierarchical structure. Is the TCP/IP model divided into several levels?
A. Four
B. Five
C. Six
D. Seven
Which of the following steps does the basic OSPF configuration include? (multiple choice)
A. Enable OSPF process
B. Create an OSPF area
C. Specify the network segments included in each region
D. Configure the router to be IR or BR.
What are the methods to solve the routing loop problem?
A. Horizontal segmentation
B. Route suppression method
C. Router restart
D. Define the maximum value of the route metric
Which of the following is the Ethernet_II frame structure?
A. Source MAC destination MAC protocol type data FCS
B. Destination MAC source MAC protocol type data FCS
C. Source MAC destination MAC packet length data FCS
D. Destination MAC source MAC packet length data FCS
Port mirroring refers to copying a specific service data, transmitting it to a monitoring device, and then performing mirror data analysis, which is generally used for traffic observation and fault location. Which of the following can be port mirroring? (multiple choice)
A. Port-based mirroring
B. Application-based mirroring
C. Stream-based mirroring
D. Image based on the upper layer protocol
Adding a shielding layer on the outside of the twisted pair, called (), can improve the anti- electromagnetic interference capability of the twisted pair.
A. STP
B. UTP
C. BTP
D. RPR
Which of the following statements about the exchange mode of the Ethernet switch are correct? (multiple choice)
A. Store and Forward mode does not detect framing errors
B. Cut-through mode, the switch starts to forward the frame after receiving the first 64 bytes of a frame.
C. Fragment-free mode detects errors in the first 64 bytes of the frame
D. Store and Forward mode discards frames with a total length of less than 64 bytes.
The following description of the advantages of optical fiber as a transmission medium, what are the correct ones? (multiple choice)
A. Not susceptible to interference from electromagnetic signals
B. High transmission rate
C. The transmission distance is infinitely long
D. Expensive
The main function of the network layer is achieved through the IP protocol, including? (multiple choice)
A. IP addressing
B. IP routing
C. Forwarding of data frames
D. Bit stream forwarding
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