Home internet access is provided by ________

What is the central device in a star network topology?

Which network protocol is used to secure the data and IP addresses of an organization?

The IP address 0.0.0.0 is used by hosts when they are being booted.

Datagrams that exceed the standard maximum transmission unit (MTU) are called

What is the primary function of an Ethernet hub?

Which one of the following protocols can be used for login to a shell on a remote host, other than SSH?

When a packet is transmitted, and it is received and processed by every machine on the network, this mode of operation is called:

Suppose a digitized voice channel is made by digitizing an 8 kHz bandwidth analog voice signal. It is required to sample the signal at twice the highest frequency (two samples per hertz). What is the bit rate required, if each sample requires 8 bits?

Consider a store-and-forward packet-switched network where the bandwidth of each link is 1 Mbps (106 bytes/sec). A user on host A sends a file of size 1000 bytes to host B through routers R1 and R2 in three different ways:

1. A single packet containing the complete file is transmitted from A to B.

2. The file is split into 10 equal parts, and these packets are transmitted from A to B.

3. The file is split into 20 equal parts, and these packets are sent from A to B.

Each packet contains 100 bytes of header information along with the user data. Consider only transmission time and ignore processing, queuing, and propagation delays. Assume there are no errors during transmission.

Let T1, T2, and T3 be the times taken to transmit the file in the first, second, and third cases, respectively. Which one of the following is CORRECT?