CCNA 1 R&S Introduction to Networks Chapter 3 QUIZ

1 What three functions are defined by network protocols to allow communication between known source and destination IP addresses? (Choose three.)

connector specifications
data encoding *
media selection
message size *
delivery options *
end-device installation

2 What is the purpose of protocols in data communications?

specifying the bandwidth of the channel or medium for each type of communication
specifying the device operating systems that will support the communication
providing the rules required for a specific type of communication to occur *
determining the electronic specifications to enable the communication

3 What type of delivery uses data link layer addresses?

remote delivery
local and remote delivery
local delivery *
remote delivery using routers

4 Which two message timing mechanisms are used in data communications? (Choose two.)

response timeout *
formatting
encapsulation
flow control *
encoding

5 What happens when two devices on the same subnet are communicating?

The host portion of the IP addresses will be different. *
The data link layer addresses are added to the IP header.
The sending device will use ARP to determine the IP address of the receiver.
The frame will be sent to the default gateway for delivery to the receiving device.

6 Which message delivery option is used when all devices need to receive the same message simultaneously?

duplex
unicast
multicast
broadcast*

7 Which organization develops the 802 family of standards for wired and wireless LANs and MANs?

ISOC
ITU-T
IEEE *
ISO
IANA

8 Which statement is correct about network protocols?

Network protocols define the type of hardware that is used and how it is mounted in racks.
They define how messages are exchanged between the source and the destination. *
They all function in the network access layer of TCP/IP.
They are only required for exchange of messages between devices on remote networks.

9 What organization developed the OSI reference model that is used in networking?

ISOC
TIA
ISO *
EIA
IANA

10 What is an advantage of using standards to develop and implement protocols?

A particular protocol can only be implemented by one manufacturer.
Products from different manufacturers can interoperate successfully.* 
Different manufacturers are free to apply different requirements when implementing a protocol.
Standards provide flexibility for manufacturers to create devices that comply with unique requirements.

11 Match the TCP/IP layer to the protocol, service, or application that works within that layer. (Not all options are used.)

application layer ->DNS

transport layer -> UDP

internet layer -> ICMP

network access layer -> WLAN

12 Which two components are added to the PDU at the network access layer? (Choose two.)

trailer *
IP header
TCP header
HTTP header
frame header*

13 Which standards organization developed the 802.3 (Ethernet) standard?

ISO
IEEE *
ISOC
IETF

14 Which logical address is used for delivery of data to a remote network?

destination MAC address
destination IP address *
destination port number
source MAC address
source IP address