OS | MCQs

Explanation

 Some functions of the presentation layer include character-code translation, data conversion, data encryption and decryption, and data translation.

It connects the application layer with the layers below converting the human readable text and media to machine readable format and vice-versa.

Explanation

The MAC (Media Access Control) sub-layer is part of the Data Link Layer (Layer 2) of the OSI model.

It handles how devices access and control the transmission on the physical medium, such as Ethernet.

Explanation

• The four layers of the TCP/IP stack (also called the DoD model) are Application/Process, Host-to-Host, Internet, and Network Access.
• The Host-to-Host layer is equivalent to the Transport layer of the OSI model.

Explanation

• OSPF (Open Shortest Path First) establishes route adjacencies on point-to-point links, but does not perform the DR (Designated Router)/BDR (Backup Designated Router) election process on these links.
• This is because point-to-point links only have two routers connected, so there is no need for a DR or BDR.

Explanation

• The administrative distance of OSPF is 110.
• Administrative distance (AD) or route preference is a number assigned to dynamic routes, static routes and directly-connected routes.
• The value is used in routers to rank routes from most preferred (low AD value) to least preferred (high AD value).

Explanation

Ostracize means بے دخل کرنا

Boycott means ترک کرنا

Explanation

Ostentatious means نمائشی

Humble means عاجز

Explanation

The OSI (Open Systems Interconnection) model has 7 layers, which are:

1. Physical
2. Data Link
3. Network
4. Transport
5. Session
6. Presentation
7. Application

Explanation

Data link layer contains frames.

Explanation

 Database management is not a function of the Operating System.

An Operating System is a program on which application programs are executed.