OSI Layers on the N+

Oh man! Ad-blocking software has been detected! :'(

This website is run by the community, for the community... and it needs advertisements in order to keep running. Blocking our ads means your killing our stats!
Please disable your ad-block, or become a premium member to hide all advertisements and this notice.

Reading my Sybex book on OSI tonight, it says that . . . .
'Layers session, presentation, application' will not be on the Network+ Exam.

I've just looked at the Objectives and there it says . . . 'Identify the seven layers of the OSI model, and their functions.'

Has anyone who took the exam, remember if they had any questions on these 3 layers?

I know it's asking a lot though, so no worries guys if the answer is a big 'i duuno.'

 

Oh man! Ad-blocking software has been detected! :'(

This website is run by the community, for the community... and it needs advertisements in order to keep running. Blocking our ads means your killing our stats!
Please disable your ad-block, or become a premium member to hide all advertisements and this notice.

Yes - all 7 layers appeared in my exam. (IIRC I was asked what sort of things happened in the Presentation layer).

Harry.

 

Cheers for that.

 

Shame on Sybex for saying that.

 

Ok ludd hopes this helps ya... I've made a table to help me with the OSI.

7- Application DEVICE-Gateways PROTOCOLS- NCP, SMB, NCP
DESCRIPTION- Where redirector services are run, and application protocols such as POP3 SMTP and FTP work.

6-Presentation DEVICE-Gateways PROTOCOLS- NCP DESCRIPTION- Responsible for data encryption, compression and formatting

5-Session DEVICE- Gateways PROTOCOLS-NETBIOS, SAP,
DESCRIPTION- Manages the data sessions between network devices.

4-Transport DEVICE-Gateways PROTOCOLS-TCP, UDP, NETBEUI, SPX
DESCRIPTION- Controls the reliable transmission and transfer of data packets. Manages the data flow and performs fragmentation / defragmentation.

3-Network DEVICE-Router, Brouters, pROTOCOLS-IP, IPX, DHCP, ARP, RIP, OSPF, ICMP, RARP. NLSP
DESCRIPTION- Responsible for the routing and addressing of traffic. Uses logical IP addressing (IP address) and frame (datagram) sequencing

2-Data Link DEVICES-Switches, Bridges, WAP,Brouters VLAN, MAC, LLC,
DESCRIPTION- Responsible for CRC checking and generation, sets rules for addressing network devices, performs flow control and frame synchronisation. MAC addresses are layer 2.

1-Physical DEVICES-Hubs, Repeaters, Media converters, NICs, WAP PROTOCOLS-Ethernet, Token Ring, DESCRIPTION-The layer responsible for the electrical, physical and media specifications of the network. It covers the hardware involved.

Well was sposed to be a table but couldnt cut and paste its layout right......

I know on the practice tests i've used there have been some (only a few) questions on layers 6 & 7 as well as the usual ones on 1 to 4.

 

That's great Twizz. Thanks for that, looks like it will definately help.