多项选择题 You are experiencing intermittent issues relating to congestion with your network.What are the possible causes of congestion on a LAN?（）

多项选择题 The LAN needs are expanding at the Testking corporate office, which is quickly growing. You are instructed to enlarge the area covered by a single LAN segment on the TestKing network.Which of the following are layer 1 devices that you can use?（）

多项选择题 The TestKing network Topology is displayed in the exhibit below A switch has been configured for three different VLANs: VLAN 2, VLAN 3, andVLAN 4. For the purposes of communication between VLANs a router is to beadded. Host from one VLAN should be able to reach the hosts in the other VLANs. Based on this requirement, what type of connection is acceptable between the routerand switch?（）