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Computer Networking

Computer Networking
In OSI model, which of the following layer provides error-free delivery of data?

None of these
Data link
Session
transport
Network

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Computer Networking
What is the minimum number of wires required for sending data over a serial communications links?

2
3
None of these
4
1

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Computer Networking
Which WAN encapsulations can be configured on an asynchronous serial connection?1. PPP2. ATM3. HDLC4. SDLC5. Frame Relay

1 and 2
All of these
3, 4 and 5
2 and 4

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Computer Networking
The IEEE 802 project of the 1980s involved further defining the lower two layers of the OSI model. A number of standards were agreed upon during that time. Which of the following is the standard for Ethernet?

802.6
802.5
802.2
802.3
802.4

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Computer Networking
You have a class A network address 10.0.0.0 with 40 subnets, but are required to add 60 new subnets very soon. You would like to still allow for the largest possible number of host IDs per subnet. Which subnet mask should you assign?

255.240.0.0
255.248.0.0
255.254.0.0
255.252.0.0
255.255.255.255

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Computer Networking
What are the two main types of access control lists (ACLs)?1. Standard2. IEEE3. Extended4. Specialized

2 and 4
3 and 4
1 and 3
1 and 2

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