The role of link aggregation is ______.

• A.Can avoid switching network loops.
• B.Increase link bandwidth.
• C.Increased link reliability between switches.
• D.Data load balancing can be realized.

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As shown in the figure, there are 4 ways to divide the OSPF area, which one is correct? (multiple choice)

• A.Figure 3
• B.Picture 1
• C.Picture 2
• D.Figure 4

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To configure a static route on the router. It is known that the destination address is 192.168.1.0, the mask is 20 bits, the outgoing interface is GigabitEthernet0/0, and the outgoing interface IP address is 10.10.202.1, so which of the following configurations is correct?

• A.ip route-static 192.168.1.0 255.255.240.0 10.10.202.1
• B.ip route-static 192.168.1.0 255.255.240.0 GigabitEthernet0/0
• C.ip route-static 192.168.1.0 255.255.248.0 GigabitEthernet0/0
• D.ip route-static 192.168.1.0 255.255.248.0 10.10.202.1

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If the configuration file specified by the user does not exist, the router initializes with _____.

• A.Use minimal configuration
• B.The last saved configuration
• C.Default configuration
• D.Most used configuration

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The two routers RTA and RTB are interconnected back-to-back using serial ports. The serial port of RTA is configured with HDLC protocol, and the serial port of RTB is configured with PPP protocol.
Both devices are configured with the correct IP address, then what will happen is ______. (Multiple choice)

• A.The physical layer of the RTB serial port is down, and the protocol layer is down.
• B.RTB serial port physical layer up, protocol layer down
• C.RTA serial port physical layer down, protocol layer down
• D.The physical and protocol layers of RTA and RTB serial ports are both down
• E.The physical layer of the RTA serial port is up, and the protocol layer remains up, but RTA cannot ping RTB

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