Strona 8

neverminder

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Pytanie 57
destination and source physical addresses
destination and source port numbers
destination and source logical network addresses
timing and synchronization
Pytanie 58
What is the TCP mechanism used in congestion avoidance?
three-way handshake
sliding window
socket pair
Pytanie 59
Which scenario describes a function provided by the transport layer?
A student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header.
A student is using a classroom VoIP phone to call home. The unique identifier burned into the phone is a transport layer address used to contact another network device on the same network.
A corporate worker is accessing a web server located on a corporate network. The transport layer formats the screen so the web page appears properly no matter what device is being used to view the web site.
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
Pytanie 60
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 source IP address
the source port numbers
the destination port number
the destination IP address
Pytanie 61
What are two ways that TCP uses the sequence numbers in a segment? (Choose two.)
to reassemble the segments at the remote location
to identify missing segments at the destination
to limit the number of segments that can be sent out of an interface at one time
to determine if the packet changed during transit
Pytanie 62
Which two tasks are functions of the presentation layer? (Choose two.)
authentication
encryption
compression
session control
addressing
Pytanie 63
Which three statements characterize UDP? (Choose three.)
UDP provides connection-oriented, fast transport of data at Layer 3.
UDP relies on application layer protocols for error detection.
UDP provides basic connectionless transport layer functions.
UDP provides sophisticated flow control mechanisms.
UDP is a low overhead protocol that does not provide sequencing or flow control mechanisms.
Pytanie 64
What is a key characteristic of the peer-to-peer networking model?
social networking without the Internet
resource sharing without a dedicated server
network printing using a print server
wireless networking