Practice Question and Answer
8Q: What is the 127.0.0.1 address used for? 970 05b5cc7e7e4d2b41977751a2e
5b5cc7e7e4d2b41977751a2e- Show AnswerHide Answer
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Answer :
Explanation :
Loop back or diagnostics
Q: What is the Classs A Private IP address space? 1395 05b5cc7e7e4d2b41977751a2d
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Answer :
Explanation :
10.0.0.0 through 10.255.255.255
Q: What is the Class B private IP address space? 1219 05b5cc7e7e4d2b41977751a2c
5b5cc7e7e4d2b41977751a2c- Show AnswerHide Answer
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Answer :
Explanation :
172.16.0.0 through 172.31.255.255
Q: What is the Class C private IP address space? 1349 05b5cc7e7e4d2b41977751a2b
5b5cc7e7e4d2b41977751a2b- Show AnswerHide Answer
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Answer :
Explanation :
192.168.0.0 through 192.168.255.255
Q: Differentiate the DoD and the OSI network models? 1273 05b5cc7e7e4d2b41977751a2a
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Answer :
Explanation :
The DoD model is a condensed version of the OSI model, composed of four layers instead of seven, but is nonetheless like the OSI model in that it can be used to describe packet creation and devices and protocols can be mapped to its layers.
Q: Describe the functions of DNS and DHCP in the network? 846 05b5cc7e7e4d2b41977751a29
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Answer :
Explanation :
Dynamic Host Configuration protocol (DHCP) provides network configuration information (including IP address) to hosts, eliminating the need to perform the configurations manually. Domain Name Service (DNS)resolves hostnames - both internet names such as www.routersim.com and device names such as workstation 2 to IP addresses, eliminating the need to know the IP address of a device for connection purposes.
Q: If a host on a network has the address 172.16.45.14/30, what is the subnetwork this host belongs to? 3443 05b5cc7e7e4d2b41977751a24
5b5cc7e7e4d2b41977751a24- 1172.16.45.0false
- 2172.16.45.4false
- 3172.16.45.8false
- 4172.16.45.12true
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Answer : 4. "172.16.45.12"
Explanation :
Answer: D) 172.16.45.12 Explanation: A/30, regardless of the class of address, has a 252 in the fourth octet. This means we have a block size of 4 and our subnets are o,4,8,12,16, etc. Address 14 is obviously in the 12 subnet.
Q: The network address of 172.16.0.0/19 provides how many subnets and hosts? 1324 05b5cc7e7e4d2b41977751a1f
5b5cc7e7e4d2b41977751a1f- 17 subnets, 2046 hosts eachfalse
- 27 subnets, 8190 hosts eachfalse
- 38 subnets, 2046 hosts eachfalse
- 48 subnets, 8190 hosts eachtrue
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Answer : 4. "8 subnets, 8190 hosts each"
Explanation :
Answer: D) 8 subnets, 8190 hosts each Explanation: A CIDR address of/19 is 255.255.224.0. This is a Class B address, so that is only 3 subnet bits, but it provides 13 host bits, or 8 subnets, each with 8,190 hosts.