More network based questions part 8

Here's another selection of random networking questions - enjoy.

1. If I were to give an IP address to VLAN1, then VLAN2, and VLAN3, which VLAN would be the management VLAN?

A) VLAN0
B) VLAN1
C) VLAN2
D) VLAN_A
E) VLAN01

2. Frame tagging is used to identify...

A) The intended recipient of a frame
B) The IP address of the frame
C) The source of the frame
D) The VLAN ID of the frame
E) The trunking method
3. What are the three layers of the Cisco hierarchical model?

A) Core layer, Network layer, Access layer
B) Core layer, Distribution layer, Access layer
C) Physical layer, Network layer, Transport layer
D) Media Layer, Transport layer, Application layer

4. HDLC is ISO standard WAN protocol which means you don't need Cisco routers at both ends of a WAN connection, a router from any vendor that supports HDLC will work.
A) True
B) False
5. What type of IP address has the following structure?

network.node.node.node

A) Class A
B) Class B
C) Class C

And a couple of subnetting questions

6. What is the first valid host on the subnet that this address 172.21.15.22/21 belongs to?

7. What is the broadcast address of the network 172.20.80.0 255.255.240.0?

Note: Subnet zero is allowed for all of these subnetting questions.

1. Correct Answer B

VLAN1 is a management VLAN and by default all ports on a switch are members of VLAN1.  Cisco recommends that you use VLAN1 for administrative purposes only, also note you can't change the name of VLAN1.

2. Correct Answer D

Frame tagging is used to tags frames on trunked links to identify what VLAN they belong to.

 3. Correct Answer B

Core layer: Considered the backbone of the network (high-end switches, high-speed cables). Concerned only with speed and reliable delivery of data. No packet filtering happens here.

Distribution layer (Workgroup layer): Ensures packets are properly routed between subnets and VLANs using LAN-based routers and Layer 3 switches.

Access layer (Desktop layer): Deals with connecting workstations to the network with switches and hubs.

 4. Correct Answer B

Even though HDLC is an ISO standard, each vendor has their own implementations of HDLC.

5. Correct Answer A

http://en.wikipedia.org/wiki/Classful_network#Introduction_of_address_classes

Subnetting Answers

6. Correct Answer: 172.21.8.1

7. Correct Answer: 172.20.95.255

   “The will to win, the desire to succeed, the urge to reach your full potential... these are the keys that will unlock the door to personal excellence.”

― Confucius

Cisco Exam Demo

In the case of Cisco exams,  students fall into a trap. They learn the theory and a little bit of troubleshooting, but they have no idea what the CCNA exam will be like when they go to the testing center.

Luckily Cisco have a little known demo which shows you what types of questions you will encounter on the exam and lets you try them out. Once you are familiar with the different types of exam questions, you'll be much more confident going into the exam.
Go to the Cisco Exam demo

Cisco base networking questions for 2014 - part 7

Here's some more random networking to activate the brain cells... enjoy!!!

Thought it was about time I started 

adding to the collection :-) apologies for the gap.

 1. What is the correct sequence of Spanning Tree states?

A) Blocking, Listening, Learning, Forwarding, Disabled
B) Disabled, Blocking, Listening, Learning, Forwarding
C) Learning, Listening, Forwarding, Disabled, Blocking
D) Listening, Learning, Forwarding, Blocking, Disabled

2. If a switch receives a multicast frame, what does it do with it?

A) Forwards it out every port
B) Sends it back to the originator asking for a destination address
C) Drops the frame

3. IGRP advertises routes to interior, system and exterior routes

A) True
B) False

4. What is the reserved address space for a Class C network?

A) 10.0.0.0 - 10.255.255.255
B) 20.0.0.0 - 20.255.255.255
C) 172.16.0.0 - 172.31.255.255
D) 192.168.0.0 - 192.168.255.255
E) 208.168.0.0 - 208.168.255.255

5. What does the trace response N mean?

A) Network unreachable
B) Not forwarded due to ACL restriction
C) Protocol unreachable
D) Port could not be reached

6. Cut Through switching method is best described by which of the following?

A) The entire frame is received before forwarding is commenced
B) Forwards frame after receiving the destination MAC address
C) Filters out collision packets by waiting for the first 64 bytes of data
D) Forwards frame after receiving the source MAC address

1. Correct Answer A
 

STP switch port states:

Blocking > Listening > Learning > Forwarding > Disabled 

2. Correct Answer A 

Internally multicast is treated as broadcast. So the Switch, will send it to all ports except from the one which it is received, just like a broadcast.

3. Correct Answer A

IGRP advertises three types of routes:

Interior routes are routes between subnets in the network attached to a router interface.
System routes are routes to networks within an autonomous system.
Exterior routes are routes to networks outside the autonomous system.

4. Correct Answer D

http://en.wikipedia.org/wiki/Private_network#Private_IPv4_address_spaces

5.  Correct Answer A

Cisco Trace Command Response Codes
Response Meaning
 *         Timed out
 !H       router received packet but did not forward it
 N        network unreachable
 P        protocol unreachable
 U        port unreachable

6. Correct Answer B

Cut-Through switching is also referred to as Fast Forward.

When in cut-through mode the switch waits for the destination MAC Address to be received. Once the MAC Address is known the switch refers to its MAC filter table to determine which port the frame should be forwarded out. The switch forwards the frame even before the entire frame has arrived.

I hope you enjoyed those - more to come..stay tuned....

   “Success is a state of mind. If you want success, start thinking of yourself as a success.”

― Joyce Brothers