MIS 320 Final 3rd 20

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

192.168.1.64/26*

What is a key characteristic of the peer-to-peer networking model?

resource sharing without a dedicated server*

Which scenario describes a function provided by the transport layer?

A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.*

Which three statements characterize UDP? (Choose three.)

- UDP provides basic connectionless transport layer functions.* - UDP relies on application layer protocols for error detection. * - UDP is a low overhead protocol that does not provide sequencing or flow control mechanisms.*

Which two tasks are functions of the presentation layer? (Choose two.)

- compression* - encryption*

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

- port numbering* - use of checksum*

What are two ways that TCP uses the sequence numbers in a segment? (Choose two.)

- to identify missing segments at the destination * - to reassemble the segments at the remote location*

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

- when a faster delivery mechanism is needed* - when applications do not need to guarantee delivery of the data*

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?

255.255.255.240*

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

6

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

62

A technician can ping the IP address of the web server of a remote company but cannot successfully ping the URL address of the same web server. Which software utility can the technician use to diagnose the problem?

nslookup*

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?

the destination port number*

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

to enable a receiving host to forward the data to the appropriate application*

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?

255.255.255.128*

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

255.255.255.192*

What is the TCP mechanism used in congestion avoidance?

sliding window*

Which statement is true about variable-length subnet masking?

The size of each subnet may be different, depending on requirements.*

What important information is added to the TCP/IP transport layer header to ensure communication and connectivity with a remote network device?

destination and source port numbers*