The Network Layer >> The Bits and Bytes of Computer Networking
Question 1
Nice job! ARP is used to discover what MAC address is associated with a specific IP address.
ARP stands for ______.
- Anonymous Resource Protocol
- Augmented Resolution Picture
- Address Resolution Protocol
- Aggressive Resource Protection
ARP is used to discover what MAC address is associated with a specific IP address.
Question 1
A network device that knows how to forward data along to other networks is known as a ______.
- switch
- hub
- router
- server
A Router is a “networking device”. Which will forward data between other networks.
Question 3
RFC stands for ______.
- Routing Frequency Control
- Request For Comments
- Realtime Frame Check
- Redundant Frame Controller
RFCs have long been used to help establish agreed-upon standards and protocols.
Question 4
anges of IP addresses that anyone can use for their internal networks are known as ______.
- Subnet Masks
- Demarcation Points
- Autonomous Systems
- Nonroutable Address Space
Non-routable address space can be used by anyone.
Question 5
In binary, 1 +1 = _____.
- 2
- 10
- 1
- 0
Binary addition is just like decimal addition, except you only have two numerals instead of ten.
Question 6
A single octet in an IP address represents what range of decimal numbers?
- 0-250
- 0-255
- 0-155
- 1-255
Eight bits of data, or a single octet, can represent all decimal numbers from 0-255.
Question 7
What protocol communicates data between routers representing the edges of autonomous systems?
- Distance-vector
- Exterior gateway
- Link state
- Interior gateway
Exterior gateway -protocols are used to communicate data between routers representing the edges of autonomous systems.
Question 8
How many bits long is an IP address?
- 256 bits
- 64 bits
- 8 bits
- 32 bits
IP addresses are 32-bit-long numbers made up of four octets, and each octet is normally described in decimal numbers.
Question 9
Which is a valid IP address?
- 126.396.659.100
- 598.36.789
- 128.42.64.78
- A8:97:4F:6D:H6:0F
128.42.64.78 has the correct notation and does not containany numbers that can’t be represented by a single octet.
Question 10
Which IP address is Class C?
- 224.24.45.69
- 128.42.39.72
- 132.26.144.52
- 192.37.48.98
Class C addresses begin with a first octet value of 192 through 223.
Question 11
What protocol is used to discover the hardware address of a node with a certain IP address?
- Subnet mask
- ARP table
- SQL database
- CIDR, or Classless Inter-Domain Routing
An ARP table is just a list of IP addresses and the MAC addresses associated with them.
Question 12
What is the process of taking a large network and splitting it up into many individual and smaller subnetworks called?
- Cloud computing
- Dynamic Host Configuration Protocol (DHCP)
- Clustering
- Subnetting
Subnetting is the process of taking a large network and splitting it up into many individual and smaller subnetworks, or subnets.
Question 13
What is the maximum decimal number possible to represent with 16 bits?
- 65536
- 256
- 1600
- 16
If you have a 16-bit number, you can just perform the math 2^16 which would be 65536 numbers.
Question 14
Computer A wants to send some data to computer B. Computer A knows that Computer B is not on its local network, so it sends the packet to the router between Network A and Network B. Based on how many network hops have happened, how much will the TTL field be decremented by?
- 2
- 6
- 1 [INCORRECT]
- 8
Question 15
What type of network address space allows for nodes on a network to communicate with each other, but prevents any gateway router from forwarding traffic there, and are reserved for internal networks?
- MAC address
- IP address
- Subnet mask
- Non-routable address space
Non-routable address space allows for nodes on such a network to communicate with each other, but no gateway router will attempt to forward traffic to this type of network.
