Which of the following statements about circuit-switching networks is incorrect: If the owner call/host does not utilize the resource, it is shared. End-to-end resources are reserved if circuit-like (guaranteed) performance is necessary.

Calculate the latency (from first bit sent to last bit received) for the following: (a) 100-Mbps Ethernet with a single store-and-forward switch in the path and a packet size of 12,000 bits. Assume that each link introduces a propagation delay of 10 µs and that the switch begins retransmitting immediately after it has finished receiving the packet. (b) Same as (a) but with three switches. (c) Same as (a), but assume the switch implements “cut- through" switching; it is able to begin retransmitting the packet after the first 200 bits have been received.

What is meant by the term "software-defined networking" (SDN) controller?

On Cisco Packet Tracer, please design the following networks: An office with three printers and one server, and a default connection via an internet router A second facility that connects to the office via a 200 MBps point to point GigabitEthernet connection and also its own facility with a 200 MBps GigabitEthernet connection. This one has 3 networked printers and 2 servers. A third facility that connects to the office via a 200 MBps point to point GigabitEthernet connection and also to the second facility via a 200 MBps GigabitEthernet connection. All networks are required to have DHCP authorized for people in their router. The Internet company uses 20.15.0.0 private space. Each user subnet must have one PC. Loopbacks should be used for other links.

A CSMA/CD LAN has minimum frame size 100 bytes and is running at 100 Mbps. The signal speed in the cable is 200,000 km/sec and the delay generated by the repeaters can be ignored. What is the maximum size the bus can have? (Note: ignore signal attenuation).

Describe the primary functions of a network switch in the context of the OSI model.

I need this ASAP and please answer what the question as it is. Thank you See the following network using Switches S1, S2, S3, S4. Assume the interfaces S1 connects to A, B, C, and S2 are 11, 12, 13, 14 respectively, similarly S2 connecting to D, E, F, and S4 are via 21,22, 23, 24 respectively; S3 connecting to G, H, I, S4 via 31,32,33, 34 respectively; and S4 connecting to S1, S2, and S3 via 41, 42, and 43 respectively.  Please give the switch table for S1, S2, S3, and S4 respectively. We assume the name of each host can be used as its MAC address, and ignore TTL for each switch table.

Explain why this statement is true: The wait time for a single-channel system is more than twice that for a two-channel system using two servers working at the same rate as the single server

Consider the Ethernet networks shown in the below exhibit to answer the following questions. Fa0 PCO Fa0 PC3 Fa0/0 Fa0/1 | Fa0/3 Etho/D/0, FaD2 s1 Fa0/1 R1 Fa0 Fa0/0 Fa0/1 R2 PC1 Fa0/1 Fa0/3. S2 Fa0 PC2 The network interface settings of PCs are: Logical Address Physical Address PCO 192.168.2.2 0060.5C32.9A15 PC1 192.168.2.3 0001.6363.6BAA PC2 192.168.3.2 00E0.F9A1.0864 PC3 192.168.0.2 0001.C935.08C3 The network interface settings of routers are: Logical Address Physical Address R1-Fa0/0 192.168.0.1 0004.9A31.C501 R1-Fa0/1 192.168.1.1 0004.9A31.C502 R1-Eth0/0/0 192.168.2.1 0060.2F70.0D9B R2-Fa0/0 192.168.1.2 0002.1641.6301 R2-Fa0/1 192.168.3.1 0002.1641.6302 Suppose that the ARP cache of PC0 is empty. Write down the contents of the cache, after PC0 has sent packets to PC1 and PC3 using the following format: Physical Address Internet Address Communicate with PC 1 Communicate with PC 3

Unlike datagram and virtual-circuit networks, circuit-switched networks do not need a routing or switching table to establish the output port from which destination-related data may be sent. Explain the cause of this disparity.