Huawei Cert Datacom Associate-Network Technology & Device Set 2

Judge: Data format of the data communication needs of the creator and receiver of information to reach a consensus in advance.

The main feature of the LAN: the network is owned by a unit, and the geographical scope and the number of sites are limited. Common LAN transmission medium with.

Half-duplex data communication mode (half-duplex mode), the each device can send and receive, but not both simultaneously. When a device is sent, the other can only receive, and vice versa. The following are working in half-duplex mode.

From the comm division of both the way information exchange, can have the following communication.

Larger geographical area network connection, in large areas to provide data communications services, primarily for LAN interconnection network is.

To determine: the more commonly used local area network bus, star topology is the actual physical device configuration, rather than the network's logical structure.

When a node in the network to transmit data on the media, the data will be transmitted to all nodes. This network topology is.

Topology has a central control point, easy to design and installation, network media directly from a central hub or switch connected to a workstation at the region. Disadvantage is that once the central point of control equipment problems, prone to single point of failure. This topology is commonly used local area network.

As the end systems and communication systems signal conversion equipment, modem (Modem) is essential for wide-area network devices in one. Modem and router connected to the serial port is divided into two.

Site A and Site B, respectively, and two ports connected to the switch, then site A to site B, first send a data packet, the following statement which is correct