Computer Networking Questions and Answers | Part- 2

Computer Networking Questions and Answers | Part- 2

Level: Beginner, Intermediate and Expert

As I have told earlier in first part of the Q&A section, this is second part and will be helpful for the brainstorming and self reading purpose only.

Here we go,

1) What are SNMP Traps?

A: SNMP Traps are unsolicited messages, which are sent based on device triggers.

2) What are the two operational modes for IP SLA?

A: operation and responder

3) What is the control plane and what is it responsible for?

A: The control plane helps the data plane determine what to do with messages, and is responsible for adding MAC entries to the Layer 2 database.

4) What is best description of a SDN Controller device?

A: It can centralize decision making for many dispirit networking devices.

5) Which Command Checks the network settings ?

A: ipconfig/all

6) A server at 192.168.0.2 is trying to access clients at 192.168.4.2 and 4.200, but is having is ipconfig/all issues. What is the correct command on the server to try to troubleshoot reaching PC one?

A: [admin@ptk4]  /tool>  ping 192.168.4.2

7) Sam knows that Pinging the default gateway will force the local machine to arp for the John DHCP server's MAC address. Which command will Sam execute to correctly list the host's arp tables and the John's MAC address?

A: C:\Users\Greg>arp -a

8) Which of the following is not a valid network topology?

a. Star Bus 

b. Bus/ Linear Bus

c. Mesh Bus

d. Ring

A: Mesh Bus

9) Which coaxial cable(s) have a characteristic impedance of 50 ohms?

A: RG-8 and RG-58

10) Which characteristic(s) make UTP and STP different from each other?

A: Shielded Twisted Pair (STP) has shielding to improve noise rejection compared to Unshielded Twisted Pair (UTP). Because of the shielding, STP is more expensive than UTP.

11) Which type of fiber optic cable supports longer run lengths?

• Single Mode
• Fractal Mode
• Laser Mode
• Multi-Mode

A: Single Mode

12) Which committee governs the standards of Ethernet?

• IEEE 802.11n
• IEEE 9001
• IEEE 803
• IEEE 802.3

A: IEEE 802.3

13) Which field would not be found in an Ethernet frame?

• Source MAC Address
• Destination IP Address
• Ethertype
• Destination addres type

A: Destination IP address

14) Which of the following is a UTP wiring standard?

• TIA A568
• TIA 568B
• 10BaseT runs at 10 Mb per second
• IEEE 802.3

A: TIA 568B 

15) What is an advantages of switches over hubs?

A: Switches can use crossover or straight-through cables to connect to other switches, but hubs require crossover cables to connect to other hubs.

Switches reduce collision domains to the two ports involved in communication by isolating them from the other switch ports for the duration of the communication. All ports of a hub are on the same collision domain and can be involved in a broad spectrum of collisions. Switches can autodetect connections to other switches and internally configure the connection port to be a crossover or straight-through, as necessary.

Again we will cover more Q&A later. 

- DR