SECURITY TIPS KEEPING FINANCIAL DATA UNDER LOCK AND KEYBOARD

As the holiday season is upon us, a timely reminder regarding internet security is in order, as the scammers will be on the increase over the Christmas period.

•  Don’t provide your PIN or Internet banking login or password to anyone

•  Delete spam and scam e-mail – DON’T open it

•  Keep your anti-virus and firewall software up-to-date

•  Always logon to Internet banking by typing in your bank’s full web address. Never give your confidential banking details to anyone

•  Don’t ever use public computers for Internet banking, for example, Internet cafes, libraries or hotels

•  Guard your identity information carefully and only provide to trusted people and entities – such as your date of birth, current address, driver’s license number and passport details

•  Be cautious about unsolicited offers or opportunities offering you the chance of making easy money

•  Be wary of offers from people or companies overseas as it makes it harder to check if they are bona-fide

•  Take steps to verify any company which makes you a job offer, for example, address, phone number, e-mail address and website. Check if it is a registered company

•  Always guard your personal information and be suspicious if someone asks for a host of personal details soon after contact

•  Be wary of a person asking for financial assistance – be aware if you send money by wire transfer these funds cannot be recovered by banks

•  Be cautious of someone asking for details of your financial status – do not provide the information

May you have a happy and safe Christmas season 

see you in the New Year - Ian B 

More neworking questions in the 2014 series - Final?

Time to stretch the grey matter with some more Cisco based networking questions...with some subnetting thrown in to add to the annoyance  :-)



1. 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

2. What is the reserved address space for a Class B 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

(Might need a pencil for the next 2 :-)

3. What valid host range is the IP address 172.25.78.33/27 part of?

4. Which subnet does host 172.26.147.25 255.255.255.224 belong to?

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

A) True
B) False

6. If your switch uses shared memory buffering, what would happen if a packet could not be delivered because of a busy destination port?

A) It would delay transmission of all packets in memory
B) It would be sent to the destination port anyway
C) It would wait in a queue while all other packets in memory are transmitted
D) It would drop the packet after an allocated time

7. What is the default administrative distance of a static route?

A) 1
B) 90
C) 100
D) 110
E) 120

8. Trunk links are used to communicate between...

A) Two switches
B) A switch and router
C) A switch and server
D) A switch and PC
E) A, B and C are correct






Get eBook



1. Correct Answer A 

Internally multicast is treated as broadcast. So the Switch, will send it to all port except from which it recieve. Same way it will treat broadcast also.

2. Correct Answer C

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

3. 172.25.78.33 through to 172.25.78.62

4. 172.26.147.0

5. 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.

6. Correct Answer C

The area of memory where the switch stores the data is called the memory buffer.

The memory buffer can use two methods for forwarding frames:
port-based memory buffering
shared memory buffering

In port-based memory buffering frames are stored in queues that are linked to specific incoming ports.

Shared memory buffering deposits all frames into a common memory buffer which all the ports on the switch share.

7. Correct Answer A

The default administrative distance for a static route is 1.

8. Correct Answer E

A trunk link is a point-to-point link between two switches, a switch and router or a switch and server which carries multiple VLAN traffic.

Not sure if there will be more questions before Christmas, however I plan new sets for 2015 so come back and we'll have some more lernin... :-)  

Have a good Christmas.