GB0-191-ENU 무료 덤프문제 온라인 액세스

If all 0 and all 1 subnets can be used as effective subnets, the class C address 192.168.1.0 is subnetted with a 26-bit subnet mask, and the number of effective subnets that can be divided is ______.

• A.2
• B.4
• C.6
• D.8

In the router's routing table, there is an entry for a route with a network segment of 10.168.100.0/24, with a Cost of 20 and a Preference of 255, so which of the following statements about this route are correct?

• A.The priority of this route is the highest value, which means any route from an untrusted source
• B.This route must be learned through dynamic routing
• C.This is an effective dynamic route
• D.Cost 20 means that the hop count of the route is 20

The PC is connected to the port E1/0/2 of the switch SWA, the IP address is 10.1.1.1, and the MAC address is 00-01-02-01-21-23. To ensure network security, you need to configure MAC+IP+ port binding on port E1/0/2.
Which of the following commands is correct?

• A.[SWA] user-bind ip-address 10.1.1.1 mac-address 0001-0201-2123
• B.[SWA-Ethernet1/0/2]user-bind ip-address 10.1.1.1 mac-address 0001-0201-2123
• C.[SWA-Ethernet1/0/2]user-bind ip-address 10.1.1.1
• D.[SWA] user-bind ip-address 10.1.1.1

PPP has to go through a series of negotiation process before establishing the link, the correct negotiation sequence is ___. (Fill in the code of each step one by one, there can be no spaces in between, such as: ABC)

• A.NCP
• B.LCP
• C.PAP/CHAP

The following statement about the functions of each layer of the OSI reference model is correct. ______. (Multiple choice)

• A.The basic function of the transport layer is to establish and maintain virtual circuits, perform error checking and flow control.
• B.The network layer decides the best route for transmitting the message. The key issue is to determine how the data packet is routed from the source to the destination.
• C.The physical layer refers to the original bit stream transmitted on the communication channel (Channel), which defines the mechanical and electrical functions and procedures required for data transmission.
• D.The session layer is responsible for data format processing, data encryption, etc.
• E.The application layer is responsible for providing network services for applications.