Operating systems and networks - Set 1

How many valid host addresses are available on an IPv4 subnet that is configured with a /26 mask?

A site administrator has been told that a particular network at the site must accommodate 126 hosts. Which subnet mask would be used that contains the required number of host bits?

A network administrator wants to have the same subnet mask for three subnetworks at a small site. The site has the following networks and numbers of devices: Subnetwork A: IP phones – 10 addresses Subnetwork B: PCs – 8 addresses Subnetwork C: Printers – 2 addresses What single subnet mask would be appropriate to use for the three subnetworks?

How many hosts are addressable on a network that has a mask of 255.255.255.248?

Which subnet would include the address 192.168.1.96 as a usable host address?

What subnet mask is needed if an IPv4 network has 40 devices that need IP addresses and address space is not to be wasted?

What are two characteristics shared by TCP and UDP? (Choose two.)

Why are port numbers included in the TCP header of a segment?

Refer to the exhibit. Consider the IP address of 192.168.10.0/24 that has been assigned to a high school building. The largest network in this building has 100 devices. If 192.168.10.0 is the network number for the largest network, what would be the network number for the next largest network, which has 40 devices?

Which statement is true about variable-length subnet masking?

In what two situations would UDP be the preferred transport protocol over TCP? (Choose two.)

What is the TCP mechanism used in congestion avoidance?

Which scenario describes a function provided by the transport layer?

A user opens three browsers on the same PC to access www.cisco.com to search for certification course information. The Cisco web server sends a datagram as a reply to the request from one of the web browsers. Which information is used by the TCP/IP protocol stack in the PC to identify which of the three web browsers should receive the reply?