多项选择题
What are some common layer 2 encapsulations for a WAN link?（）
A. Ethernet
B. PPP
C. Token Ring
D. HDLC
E. Frame Relay
F. POTS
相关考题
-
单项选择题
Which WAN service utilizes two different encapsulation types (one for data and one for signaling) on its data link layer?（）
A. ISDN
B. Frame Relay
C. ATM
D. FDDI -
单项选择题
A router receives a packet on interface 172.16.45.66/26. The source IP of the packet is 172.16.45.127/26 and the destination is 172.16.46.191/26.How will the router handle the packet?（）
A. The destination is a host on another subnet, so the router will not forward the packet.
B. The destination is a host on the same subnet, so the router will forward the packet.
C. The destination is a broadcast address, so the router will not forward the packet.
D. The destination is a network address, so the router will forward the packet. -
单项选择题
Network equipment supporting the use of flow control mechanisms has been recently installed. What is the purpose of flow control in a data network?（）
A. It ensures that data is retransmitted if an acknowledgment is not received.
B. It reassembles segments in the correct order on the destination device.
C. It provides a mechanism for the receiver to control the transmission speed.
D. It regulates the size of each datagram segment.
E. All of the above are functions of flow control
