- IV Final Questions and Answers
The open system interconnection reference model (OSI/R<) Network layer serves which primary
function? - CORRECT ANSWER ->>It uses layer 3 addresses to create multiple routed networks
The address 68.56.189.17 belongs to which internet protocol IP class? - CORRECT ANSWER ->>Class A
What happens to a datagram sent by a higher level protocol to a 127.x.y.z address? - CORRECT ANSWER
->>The datagram loops back inside the host and never leaves the network interface card (NIC)
Which device evaluates and acts upon a packet's internal protocol (IP) address? - CORRECT ANSWER -
>>Router
The network layer must do what to a recieved frame, in order to determine the route over which it will
forward the datagram to the next network? - CORRECT ANSWER ->>Decapsulate the packet
What network information can be determined from a logical internet protocol (IP) address? - CORRECT
ANSWER ->>The host portion and network portion
the physical address of a device is processed by which layer of the open systems interconnection
reference model (OSI/RM)? - CORRECT ANSWER ->>The data link layer
Which layer of the open system interconnection reference modle (OSI/RM) would you suspect as being
the problem when packets arriving at the server but no information is being returned to the client? -
CORRECT ANSWER ->>The transport layer
All computers running on the transmission control protocol/internet protocol (TCP/IP) suite have which
of the following in common? - CORRECT ANSWER ->>Each computer is assigned its own internet
protocol (IP) address
, A repeater operates at which layer of the open systems interconnection reference model (OSI/RM)? -
CORRECT ANSWER ->>The physical layer.
Which of the following protocols allows email clients to download their messages from an email server?
- CORRECT ANSWER ->>Post office protocol version 3 (POP3)
Hypertext transfer protocol (HTTP) is what type of protocol? - CORRECT ANSWER ->>Stateless
On the file transfer protocol (FTP) server, what manages client requests for file retrieval or transmission?
- CORRECT ANSWER ->>A daemon
What are the primary requirements to connect a transmission control protocol/ internet protocol
(TCP/IP) network? - CORRECT ANSWER ->>Unique pairs of network layer and transport layer addresses
and use of the TCP/IP protocol suit.
What type of delivery method uses an email server between the sender and the receiver of messages? -
CORRECT ANSWER ->>Store-and-forward
Host names and uniform resource locators (URL) are resolved to internet protocol (IP) addresses by
which of the following? - CORRECT ANSWER ->>Domain Name System (DNS)
What happens when the browser application finishes the downloading the files necessary to display a
web page? - CORRECT ANSWER ->>The browser server drop the connections, and the browser maintains
th epage and its elements in local memory.
Which email protocol enables the messages to be viewed without first downloading them from the
email server? - CORRECT ANSWER ->>Internet Message AccessPprotocol version 4 (IMAP4)
What type of server maintains an access log to assist with troubleshooting and tracking down malicious
users? - CORRECT ANSWER ->>File transfer Protocol Server (FTP)
A store and forward email system will not deliver messages until - CORRECT ANSWER ->>The host
requests the information