Computer Science Network Questions - Each Networked Computer’s NIC card has a __

Question

Computer Science Network Questions -

Each Networked Computer’s NIC card has a ______________ that is expressed in 6 pairs of hex digits. With the Vendor code being the first three sets in the number.

Which port number is most common for HTTP (web pages)?

What are the disadvantages to UDP (User Datagram Protocol)?

In ARP what does the frame header contain?

How many layers the in TCP/IP protocol?

TCP/IP stands for ______________

IP addresses are ____ bytes in length

The _______ layer in TP/IP has the job for routing.

Sending a message to this IP address, ___________ will be returned back to you.

The first two bytes of the IP address is assigned by InterNIC in a(n) _________ network.

It is the responsibility of TCP to ensure an __________ transmission.

TCP/IP has _____ layers.

What does a class A IP look like?

What does a class B IP look like?

What does a class C IP look like?

Finish the routing table (assume your computer's IP is 10.89.2.10 and you're connected to a router at the address of 10.89.2.1):

Network Address 127.0.0.0 10.89.2.0 10.89.2.10 0.0.0.0

224.0.0.0 255.255.255.255

Netmask __A1__ 255.255.255.0 255.255.255.255 0.0.0.0
224.0.0.0 255.255.255.255

Gateway Address 127.0.0.1 __A2__ 127.0.0.1 __A3__ 10.89.2.10 10.89.2.10

Interface 127.0.0.1 10.89.2.10 127.0.0.1 10.89.2.10 10.89.2.10 10.89.2.10
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Sending a message to the address 127.0.0.1 sends it to _______. A. Your Router.

B. Yourself. C. Google.

D. All of the above.
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An IP broadcast address ends in _____.

0.0.0.0 corresponds to _______.

What is the command line instruction to display a routing table within Windows?

____________ are the formal rules and conventions governing the exchange of information between computers.

Explanation / Answer

Each Networked Computer’s NIC card has a ______________ that is expressed in 6 pairs of hex digits. With the Vendor code being the first three sets in the number.
Ans: Mac Address.

Which port number is most common for HTTP (web pages)?
Ans: 8080

What are the disadvantages to UDP (User Datagram Protocol)?
Ans: There are no guarantees with UDP.
A packet may not be delivered, or delivered twice, or delivered out of order; you get no indication of this unless the listening program at the other end decides to say something.
UDP has no flow control, Congestion Control, implementation is the duty of user programs.
Routers are quite careless with UDP. They never retransmit it if it collides, and it seems to be the first thing dropped when a router is short on memory.
Manually breaking of data into packets.
UDP suffers from worse packet loss than TCP.

In ARP what does the frame header contain?
Ans:which contains the source and destination MAC addresses, among other data. The middle part of the frame is the actual data. The frame ends with a field called Frame Check Sequence (FCS).

How many layers the in TCP/IP protocol?
Ans: 4 layers - network access,internet,transport,application layer

TCP/IP stands for Ans: Transmission Control Protocol / Internet Protocol

IP addresses are ____ bytes in length
Ans: 4 Bytes

The _______ layer in TP/IP has the job for routing.
Ans: Internet Layer

Sending a message to this IP address, ___________ will be returned back to you.
Ans: 127.0.0.1

It is the responsibility of TCP to ensure an __________ transmission.
Ans: reliable

TCP/IP has _____ layers.
Ans: 4 layers

What does a class A IP look like?
Ans: 0.0.0.0 to 127.255.255.255

What does a class B IP look like?
Ans: 128.0.0.0 to 191.255.255.255

What does a class C IP look like?
Ans:192.0.0.0 to 223.255.255.255

Finish the routing table (assume your computer's IP is 10.89.2.10 and you're connected to a router at the address of 10.89.2.1):
Network Address 127.0.0.0 10.89.2.0 10.89.2.10 0.0.0.0 224.0.0.0 255.255.255.255
Netmask __A1__ 255.255.255.0 255.255.255.255 0.0.0.0 224.0.0.0 255.255.255.255
Gateway Address 127.0.0.1 __A2__ 127.0.0.1 __A3__ 10.89.2.10 10.89.2.10
Interface 127.0.0.1 10.89.2.10 127.0.0.1 10.89.2.10 10.89.2.10 10.89.2.10
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Sending a message to the address 127.0.0.1 sends it to _______.
A. Your Router.
B. Yourself. C. Google.
D. All of the above.
Ans: B
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An IP broadcast address ends in _____.
Ans:255

0.0.0.0 corresponds to _______.
Ans: all IPv4 addresses on local machine

What is the command line instruction to display a routing table within Windows?
Ans: open a Command Prompt window and then enter the ROUTE PRINT command

____________ are the formal rules and conventions governing the exchange of information between computers.
Ans: access method, allowed physical topologies, types of cabling, and speed of data transfer.

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