Network+ Chapter 1 Test Review
How long is a MAC address?
12 hexadecimal characters
Frames in most wired networks hold at most
1500 bytes of data
How many layers does the OSI Model contain?
7
Which layer of the TCP/IP Model is mapped to the top 3 layers of the OSI Model?
Application
Which layer of the OSI Model adds source and destination MAC Addresses to frames?
Data Link
Which layer of the OSI Model is the only layer divided into two sublayers?
Data Link
Broadcast MAC Address
FF-FF-FF-FF-FF-FF
A NIC reads the data portion of a frame to determine the address of the receiving system.
False
In a wired network, a charge on a wire represents a zero while no charge represents a one.
False
The Link Layer of the TCP/IP Layer combines features of the top 3 layers of the OSI Model.
False
The Network Interface Layer of the TCP/IP model maps to the Network Layer of the OSI model.
False
The TCP/IP model consists of 6 layers.
False
What unique numeric identifier is assigned to each device on the network by the IP Protocol in the OSI Model's Network Layer?
IP Address
The organization responsible for developing the OSI Model of networking is
ISO
Routers function at which layer of the TCP/IP Model?
Internet
Which layer of the TCP/IP Model performs IP Addressing functions?
Internet
Which statement best describes Logical Link Control (LLC)
It is a sublayer of the Data Link Layer
Which statement best describes an Application Programming Interface?
It provides programmers with a standard way to extend an application's capabilities.
How does the receiving station on a network use the CRC to verify that it received accurate data?
It uses the same divisor as the sending station to find the same remainder
Which layer of the TCP/IP Model is mapped to the bottom two layers of the OSI Model?
Link
The unique identifier burned into a ROM Chip in the NIC is known as
MAC Address
Routers function at which layer of the OSI model?
Network
Which layer of the OSI Model assembles the data it receives into pieces called packets?
Network
Which layer of the OSI Model uses routers and IP Addresses to ensure that packets arrive at the correct system?
Network
Which layer of the OSI Model defines a method of moving radio waves?
Physical
What device splits a large network into subnets?
Router
Which layer of the OSI Model manages the opening and closing of the connection between applications?
Session
Which two parts are included in a MAC address?
The Organizationally Unique Identifier and the device ID of the NIC
How are incoming frames handled by a switch?
The frames are sent only to the NIC that has the destination MAC address
Where does the cyclic redundancy check (CRC) originate in a network frame?
The sending NIC attaches it
Which OSI Model Layer initializes requests for packets that were not received in good order?
Transport
Which layer of the TCP/IP Model uses a connection-oriented protocol?
Transport
For a network technician, one benefit of understanding OSI 7 Layer Model and how traffic in an actual network works through the model is applying this knowledge to
Troubleshooting networks
Cabling, physical addresses, NICs, and switches are included in the Link layer of the TCP/IP model.
True
No two systems on the same network can share the same IP address.
True
Routers use logical addresses to forward data.
True
TCP is a connection-oriented transport protocol.
True
The FCS uses a type of binary math called a cyclic redundancy check (CRC) that the receiving NIC uses to verify that the data arrived intact.
True
The Transport Layer of the TCP/IP model uses both connection-oriented and connectionless protocols.
True
Two systems on the same network may have NICs with the same MAC address.
True
When the NIC sends a frame that contains the broadcast address, every NIC on the network processes that frame.
True
A MAC address is also known as
a physical address
An oscilloscope is used to see
electrical pulses
UTP cabling usually contains ____ pairs of wires that can transmit and receive data
four
All NICs on the same network mus use the same _______, or they will not be able to communicate with other NICs.
frame type
A MAC address is usually written in
hex notation
If you have a Windows system, type _______ from the command prompt to display the MAC Address for your computer.
ipconfig/all
