CH6 - Course Quiz Flashcards
Which formula would you use to calculate the number of new Subnets?
2y, where y is the number of zeroes in the Subnet Mask
2y, where y is the number of ones in the Network ID extension
2y, where y is the number of bytes you add to the Subnet Mask
2y, where y is the number of bits you add to the Subnet Mask
2y, where y is the number of bits you add to the Subnet Mask
If the first decimal value of an IP Address is between 128 and 191, to what IP Class does the Network belong to?
Class A
Class B
Class C
Class D
Class B
User Datagram Protocol (UDP) is a connection-oriented Protocol?
True
False
False
CompTIA and many techs refer to a CIDR address as a ______________ address, meaning the Subnet used does not conform to the big three: A, B, or C?
static
connectionless
classless
dotted
classless
What is the range of decimal values in each of the four groups of an IPv4 Address?
1 to 256
0 to 255
1 to 1024
0 to 1024
0 to 255
Using class blocks enables a much more efficient use of IP Addresses compared to Subnetting?
True
False
False
Dynamic IP Addressing via ________ automatically assigns an IP Address whenever a computer connects to a Network?
the Dynamic Host Configuration Protocol (DHCP)
ipconfig
Subnetting
Classless Inter-Domain Routing (CIDR)
the Dynamic Host Configuration Protocol (DHCP)
Domain Name System (DNS) uses the User Datagram Protocol (UDP)?
True
False
True
Explanation:
DNS uses Both TCP and UDP
What is the universal MAC Address for Broadcast?
0.0.0.0
FF-FF-FF-FF-FF-FF
127.0.0.1
1.1.1.1
FF-FF-FF-FF-FF-FF
What is the cornerstone of Subnetting?
TCP
the IP Address
the Subnet Mask
the Packet
the Subnet Mask
Which method of sending a Packet allows a single computer to send a packet to a group of interested computers?
Omnicast
Broadcast
Unicast
Multicast
Multicast
When a tech installs a range of IP Addresses, this is called a DHCP Scope?
True
False
True
Which IP Address is a Public IP Address?
- 0.0.0
- 192.100.3
- 31.255.255
- 168.255.255
198.192.100.3
To what Layer does the Internet Protocol correspond?
Session
Transport
Network
Data Link
Network
Which IP Address is valid for an individual host expressed in dotted decimal notation?
258.198.3.160
128-5EF-297
255.255.255.0255
192.168.4.2
192.168.4.2
Describe the 4 Common Principles of Internet Addressing that most Networks follow?
- Give the Default Gateway the first IP Address in the Network ID.
- Try to use the remaining IP Addresses in sequential order.
- Try to separate Servers from Clients
- Document whatever you choose to do so the person who comes after you understands.
What is the one major problem with Static Addressing?
Making any changes to the Network may be difficult.
What are two goals of Subnetting?
- Efficiency
2. Making multiple Network IDs from a single Network ID.
Define a DHCP Lease and describe how it is used?
DHCP Lease is set for a fixed/limited amount of time, often one to eight days.
Near the end of the Lease time, the DHCP client sends another DHCP Request.
Define the Default Gateway on a TCP/IP Network and briefly describe how it is set up?
Default Gateway is the Router, which is basically the “Gateway” from the LAN to reach the Internet.
Your LAN gets connected to the Router, when the Client on the Network needs to reach the Internet, the Segment is “Routed” through the Router and the Router - using its Routing Tables sends it off, the Segment will go from Router to Router known as Hops until it reaches its Destination.
For Logical Addressing to work, no two computers on the same Network may have the same _________?
IP Address
To make IP Addresses easier for humans to use, the 32-bit binary value is broken down into ____________ groups of eight, separated by periods, or dots?
four
The Regional Internet Registry (RIR) for North America is called the ________?
American Registry for Internet Numbers (ARIN)
A DHCP _________ is set for fixed amount of time, often one to eight days?
lease
Routers use __________ to determine Network Traffic?
Network IDs
When you want to be positive that the data moving between two systems gets there in good order, use a Connectionless Application?
True
False
False
Systems that use Static IP Addressing can never have DHCP problems?
True
False
True
Which formula would you use to arrive at the number of Hosts on a Subnet?
2x + 2, where x represents the number of zeroes in the subnet mask
2x - 2, where x represents the number of zeroes in the subnet mask
2x / 2, where x represents the number of zeroes in the subnet mask
2x * 2, where x represents the number of zeroes in the subnet mask
2x - 2, where x represents the number of zeroes in the subnet mask
Apple called its Protocol suite ______?
NetBEUI
AppleTalk
NetBIOS
UNIX
AppleTalk
IPv4 and IPv6 are the only TCP/IP Protocols that work at the Network Layer?
True
False
False
A Class C Network block uses the _______ octets to define only the Network ID?
first 2
last 2
first 3
last 3
first 3
What Network Protocol do Apple Systems use today?
AppleTalk
IPX/SPX
NetBIOS/NetBEUI
TCP/IP
TCP/IP
Which Protocol do Domain Name System (DNS) and Dynamic Host Configuration Protocol (DHCP) use?
UDP
TCP
IP
POP3
UDP
Explanation:
DNS uses Both
DHCP uses UDP
What command would you run from a Windows command line to test a computer’s Network stack?
arp -a
ping gateway
ipconfig /all
ping 127.0.0.1
ping 127.0.0.1
Which method of sending a packet allows one computer to send a message directly to another?
omnicast
broadcast
unicast
multicast
unicast
What Port Number is associated with a DHCP Server?
Port 67
Explanation:
Port 67 = Server
Port 68 = Client
What is the difference between a DHCP Client and a DHCP Server?
DHCP Clients request IP info from DHCP Server.
DHCP Servers in turn pass out IP information to DHCP Clients.
Briefly describe the IP Header Time to Live (TTL) field?
Time to Live (TTL) refers to the amount of time or “hops” that a Packet is set to exist inside a Network before being discarded by a Router.
Briefly compare a WAN to a LAN and explain how to differentiate them from one another?
LAN = Local Area Network, multiple Computers networked together in a small location. WAN = Wide Area Network, connects multiple LANs.
The Network ID and Host ID are combined to make a system’s ___________?
IP Address
In Windows, the ________ command is used to try and reestablish a DHCP lease manually?
ipconfig /renew
All Routers block ________ IP Addresses?
private
To show a Windows system’s current ARP Cache, open a command line and type ________?
arp -a
Any Network using _______ consists of a DHCP Server and a DHCP Client?
DNS
ping
DHCP
ARP
DHCP (Dynamic Host Configuration Protocol)
Which statement about Subnet Masks is TRUE?
A “0” in the Subnet Mask indicates part of the Network ID
The last 8 digits of every Subnet Mask must be all ones.
All machines on the same Network have the same Subnet Mask.
The Subnet Mask length must be the length of the IP Address, minus two.
All machiens on the same Network have the same Subnet Mask.
How many binary digits are in an IPv4 Address?
4
8
16
32
32
Always verify static IP Addresses with ping, it’s too easy to make a typo when entering them?
True
False
True
How long is a Subnet Mask?
24 bits
32 bits
32 bytes
16 bits
32 bits
Which statement best describes a Class E address ID?
Class E is considered to be experimental.
Class E is retired and not available for use.
Class E is for Government Use Only.
Class E is for Private and Special Addresses.
Class E is considered to be experimental.
Explain the two ways to give a computer an IP Address, Subnet Mask, and a Default Gateway?
- Dynamic - Automatically assigned by a Server that passes it out.
- Static - Manually assigned by an Admin
Who decides when to use TCP or UDP?
The Application and/or basically the Programmers who created the Application.
What is the Loopback Address and what is its Purpose?
127.0.0.1 - Allows a device to Send/Receive its own Data Packet to test functionality of the Computer’s Network Stack.
What does it mean if a System’s IP Address is within the 169.254.0.0/16 Network ID?
That is an APIPA Address (Automatic Private IP Address).
This is an indication there’s an issue with the DHCP Lease/Server and should be investigated ASAP.
The world is moving to a newer, longer type of IP Address called _________?
IPv6
Linux can use the deprecated ifconfig command, but a better tool is ________?
dhclient
A MAC Reservation guarantees that the System will get the same _________ address?
IP (Internet Protocol)
The individual Computer can’t have an IP Address that ends with 0 because that is reserved for _________?
Network IDs
