Huawei Open Programmability System (OPS) uses HTTP methods to access managed objects to manage network devices. HTTP is the most widely used network transmission protocol on the Internet. By default, the TCP port number _____ is used. (Fill in Arabic numerals.)

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In ospf broadcast networks, there are 4 routers RTA, RTB, RTC, and RTDs within the same network segment The DR priorities are 2, 1, 1, and O, and the Router ID is respective 1921681.1, 19216821, 19216831, and 192
16841 If the OSPF protocol is enabled on both of these four routers, ospf selects the BDR as

• A.RTC
• B.RTD
• C.RTB
• D.RTA

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When you configure a virtualized campus network on iMaster NCE-Campus and enable external networks to connect to the Internet, iMaster NCE-Campus will automatically deliver a specific route to direct traffic to the corresponding external network.

• A.TRUE
• B.FALSE

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What about the description of IGMP Snooping, is it correct?

• A.IGMP Snooping runs at the link layer and is a multicast constraint mechanism on Layer 2 Ethernet switches that manages and controls multicast groups
• B.IGMP Snooping solves the problem of multicast messages broadcasting in layer 3
• C.IGMP Snooping does not consume the CPU of the switch
• D.IGMP Snooping establishes a MAC multicast address table by listening for IGMP packets sent by the host

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Which of the following are single-packet attacks?

• A.DDos Attack
• B.Malformed Message Attack
• C.Special control message attacks
• D.Scan Probe Attack

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