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Before the advent of classless addressing, the address 128.192.168.16 would have been considered part of:
Suggested Answer: B
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Before the advent of classless addressing, one could tell the size of a network by the first few bits of an IP address. If the first bit was set to zero (the first byte being from 0 to 127), the address was a class A network. Values from 128 to 191 were used for class B networks whereas values between 192 and 223 were used for class C networks. Class D, with values from 224 to 239 (the first three bits set to one and the fourth to zero), was reserved for IP multicast.
Source: STREBE, Matthew and PERKINS, Charles, Firewalls 24seven, Sybex 2000, Chapter 3: TCP/IP from a Security Viewpoint.
13 comments · newest first
AN
Anabel
11 months ago
Surprised it's not class C, thought it was more common!
DE
Delfina
12 months ago
Nope, class A is way off.
RE
Renato
12 months ago
Wait, isn't it class C? I'm not so sure.
RY
Ryan
12 months ago
I agree, class B all the way!
MA
Martin
1 year ago
Definitely a class B network.
TI
Tijuana
1 year ago
I thought class C was for addresses starting with 192, but since this one starts with 128, I guess it must be class B.
EV
Evette
1 year ago
I'm not entirely sure, but I remember something about class A being for addresses starting with 1 to 126. So, maybe class B is correct?
PE
Pearly
1 year ago
I think the address 128.192.168.16 falls under class B because it starts with 128, which is in the range for class B networks.
DE
Derrick
1 year ago
I practiced a similar question, and I believe class B is right too. The first octet being 128 definitely points to that.
NI
Nickolas
1 year ago
This one seems pretty straightforward. I'm going to go with option C - data in email message. That's the type of data that would require both the sender and receiver to have encryption/decryption capabilities.
KA
Kayleigh
1 year ago
From what I studied, I feel like cloud setups often focus on logical separation, so I'm leaning towards "logical, one or more." That feels right based on similar practice questions.
BR
Britt
1 year ago
Hmm, I'm a bit unsure about this one. The command in the solution looks a little strange to me. I'll need to review my Docker swarm cluster management notes to make sure I'm understanding this correctly.
LA
Lavonna
1 year ago
Hmm, I'm a bit unsure about this. I'll have to re-read the question and options carefully to make sure I understand it fully before answering.