M5M10 Flashcards
(8 cards)
When a wireless network in a small office is being set up, which type of IP addressing is typically used on the networked devices?
Choices:
private
public
network
wireless
private
Explanation: In setting up the wireless network in a small office, it is a best practice to use private IP addressing because of the flexibility and easy management it offers
Which two parts are components of an IPv4 address? (Choose two.)
Choices:
logical portion
host portion
broadcast portion
subnet portion
network portion
physical portion
host portion
network portion
Explanation: An IPv4 address is divided into two parts: a network portion – to identify the specific network on which a host resides, and a host portion – to identify specific hosts on a network. A subnet mask is used to identify the length of each portion.
Match each IPv4 address to the appropriate address category (2 each)
Host Address
network address
broadcast address
Choices:
192.168.100.161/25
192.168.100.1.191/26
10.10.10.128/25
224.10.0.254/24
203.0.113.100/24
172.110.12.64/28
10.0.0.159/27
host address:
192.168.100.161/25
203.0.113.100/24
network address:
10.10.10.128/25
172.110.12.64/28
broadcast address:
192.168.1.191/26
10.0.0.159/27
Explanation: To determine whether a given IPv4 address is a network, host, or broadcast address, first determine the address space based on the subnet mask. Convert the address and mask to binary values, then perform the ANDing function to determine the network address. To calculate the of the address space, use the number of host bits in the subnet mask as an exponent of 2. The number of valid host addresses in the space is that number minus 2. The network address will have all zeroes in the host portion, and the broadcast address will have all ones. For example, 10.0.50.10/30 yields a network IP address of 10.0.50.8 when the mask is ANDed with the given address. Because there are only 2 host bits in the mask, there are only 2 valid host addresses (4-2). 10.0.50.10 is one of the two valid host IP addresses.
What is the full decompressed form of the IPv6 address 2001:420:59:0:1::a/64?
Choices:
- 2001:4200:5900:0:1:0:0:a000
- 2001:0420:0059:0000:0001:0000:000a
- 2001:0420:0059:0000:0001:000a
- 2001:0420:0059:0000:0001:0000:0000:000a
- 2001:420:59:0:1:0:0:a
- 2001:4200:5900:0000:1000:0000:0000:a000
2001:0420:0059:0000:0001:0000:0000:000a
Explanation: To decompress an IPv6 address, the two rules of compression must be reversed. Any 16-bit hextet that has less than four hex characters is missing the leading zeros that were removed. An IPv6 address should have a total of 8 groups of 16-bit hextets, a (::) can be replaced with consecutive zeros that were removed.
A cybersecurity analyst believes an attacker is spoofing the MAC address of the default gateway to perform a man-in-the-middle attack. Which command should the analyst use to view the MAC address a host is using to reach the default gateway?
choices:
route print
ipconfig /all
netstat -r
arp -a
arp -a
Explanation: ARP is a protocol used with IPv4 to map a MAC address to an associated specific IP address. The command arp -a will display the MAC address table on a Windows PC.
A user sends an HTTP request to a web server on a remote network. During encapsulation for this request, what information is added to the address field of a frame to indicate the destination?
choices:
- the network domain of the destination host
- the MAC address of the destination host
- the IP address of the default gateway
- the MAC address of the default gateway
the MAC address of the default gateway
Explanation: A frame is encapsulated with source and destination MAC addresses. The source device will not know the MAC address of the remote host. An ARP request will be sent by the source and will be responded to by the router. The router will respond with the MAC address of its interface, the one which is connected to the same network as the source.
What type of information is contained in an ARP table?
- domain name to IP address mappings
- switch ports associated with destination MAC addresses
- routes to reach destination networks
- IP address to MAC address mappings
IP address to MAC address mappings
Explanation: ARP tables are used to store mappings of IP addresses to MAC addresses. When a network device needs to forward a packet, the device knows only the IP address. To deliver the packet on an Ethernet network, a MAC address is needed. ARP resolves the MAC address and stores it in an ARP table.
Match the characteristic to the protocol category.
TCP
choices:
