Most computer networks use packet switching to move data from the transmitting computer to the receiving computer. The following properties apply to packet-switched networks Select all that apply.
A. The size of the data blocks is limited.
B. The nth packet of a message may be forwarded before the (n + 1) packet has fully arrived.
C. The path from transmitting to receiving must be established before transmission starts.
D. Packets may be delivered to the destination in the wrong order.
E. The required bandwidth is reserved in advance. Thus, any unused bandwidth is wasted.
Most computer networks use packet switching to move data from the transmitting computer to the receiving computer. The following properties apply to packet-switched networks Select all that apply.
A. The size of the data blocks is limited.
B. The nth packet of a message may be forwarded before the (n + 1) packet has fully arrived.
C. The path from transmitting to receiving must be established before transmission starts.
D. Packets may be delivered to the destination in the wrong order.
E. The required bandwidth is reserved in advance. Thus, any unused bandwidth is wasted.
1 Answer
James Dowd
Updated on December 31st, 2020Packet switching refers to techniques that divide the original data into discrete forms known as packets. Each packet can be routed independently from its origin to its specified destination. Let's review the truth behind each statement,
A. The size of the data blocks is limited. TRUE - The size of each data block, and thus each packet, is in fact limited. Like any data transfer, it will be limited to the number of bits present on the packet. The exact limits will change depending on the exact network protocol you are using to transmit data over your packet-switched network.
B. The nth packet of a message may be forwarded before the (n + 1) packet has fully arrived. TRUE - In packet switching networks, packets are routed independently of each other. In some networks, packets out of order are acceptable, and reconfigured in their correct orientation at the destination.
C. The path from transmitting to receiving must be established before transmission starts. FALSE - You do not need to establish the path before transmission begins, which is one of the key advantages of these types of networks. Different packets can take different paths from origin to destination. These routes are controlled by routers which utilize dynamic routing tables.
D. Packets may be delivered to the destination in the wrong order. TRUE - Packets contain a header address that enables them to be rearranged in the correct order at their final destination node.
E. The required bandwidth is reserved in advance. Thus, any unused bandwidth is wasted. - FALSE - Packet switched networks do not need to reserve resources in advance. Therefore, these networks are able to use less network bandwidth and thus improve efficiency of the overall network.
Therefore, A, B, and D apply to packet-switched networks.