CompTIA Network+ N10-008 CH6 - Course Quiz
To calculate the number of new subnets, use 2ʸ, where y equals the number of bits borrowed (added) to the subnet mask. Each added bit doubles the number of possible subnets.
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
Key Terms
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
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| Term | Definition |
|---|---|
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 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 |
User Datagram Protocol (UDP) is a connection-oriented Protocol? True | 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 | classless |
What is the range of decimal values in each of the four groups of an IPv4 Address? 1 to 256 | 0 to 255 |
Using class blocks enables a much more efficient use of IP Addresses compared to Subnetting? True | False |
Dynamic IP Addressing via ________ automatically assigns an IP Address whenever a computer connects to a Network? the Dynamic Host Configuration Protocol (DHCP) | the Dynamic Host Configuration Protocol (DHCP) |
Domain Name System (DNS) uses the User Datagram Protocol (UDP)? True | True Explanation: |
What is the universal MAC Address for Broadcast? 0.0.0.0 | FF-FF-FF-FF-FF-FF |
What is the cornerstone of Subnetting? TCP | the Subnet Mask |
Which method of sending a Packet allows a single computer to send a packet to a group of interested computers? Omnicast | Multicast |
When a tech installs a range of IP Addresses, this is called a DHCP Scope? True | True |
Which IP Address is a Public IP Address?
| 198.192.100.3 |
To what Layer does the Internet Protocol correspond? Session | Network |
Which IP Address is valid for an individual host expressed in dotted decimal notation? 258.198.3.160 | 192.168.4.2 |
Describe the 4 Common Principles of Internet Addressing that most Networks follow? |
|
What is the one major problem with Static Addressing? | Making any changes to the Network may be difficult. |
What are two goals of Subnetting? |
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. |
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. |
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 |
Systems that use Static IP Addressing can never have DHCP problems? True | 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 |
Apple called its Protocol suite ? NetBEUI | AppleTalk |
IPv4 and IPv6 are the only TCP/IP Protocols that work at the Network Layer? True | False |
A Class C Network block uses the _ octets to define only the Network ID? first 2 | first 3 |
What Network Protocol do Apple Systems use today? AppleTalk | TCP/IP |
Which Protocol do Domain Name System (DNS) and Dynamic Host Configuration Protocol (DHCP) use? UDP | UDP Explanation: |
What command would you run from a Windows command line to test a computer's Network stack? arp -a | ping 127.0.0.1 |
Which method of sending a packet allows one computer to send a message directly to another? omnicast | unicast |
What Port Number is associated with a DHCP Server? | Port 67 Explanation: |
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 | DHCP (Dynamic Host Configuration Protocol) |
Which statement about Subnet Masks is TRUE? A "0" in the Subnet Mask indicates part of the Network ID | All machiens on the same Network have the same Subnet Mask. |
How many binary digits are in an IPv4 Address? 4 | 32 |
Always verify static IP Addresses with ping, it's too easy to make a typo when entering them? True | True |
How long is a Subnet Mask? 24 bits | 32 bits |
Which statement best describes a Class E address ID? Class E is considered to be experimental. | Class E is considered to be experimental. |
Explain the two ways to give a computer an IP Address, Subnet Mask, and a Default Gateway? |
|
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 |