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1281. Which of the following is present in both an HTTP request line and a status line ?

A. HTTP version number *
C. Method
D. None of the mentioned

1282. The physical layer concerns with :

A. Bit by Bit delivery *
B. Process to process delivery
C. Application to application delivery
D. None of the above

1283. Which transmission media has the highest transmission speed in a network ?

A. Coaxial cable
B. Twisted pair cable
C. Optical fiber *
D. Electrical cable

1284. Bits can be send over guided and unguided media as analog signal by :

A. Digital modulation *
B. Amplitude modulation
C. Frequency modulation
D. Phase modulation

1285. Which address is used in an internet employing the TCP/IP protocols ?

A. Physical address and logical address
B. Port address
C. Specific address
D. All of the above *

1286. The portion of physical layer that interfaces with the media access control sub layer is called :

A. Physical signaling sub layer *
B. Physical data sub layer
C. Physical address sub layer
D. None of the mentioned

1287. Physical layer provides :

A. Mechanical details of electrical connectors and links
B. Electrical specification of transmission line signal level
C. Specification for IR over optical fiber
D. All of the above *

1288. In asynchronous serial communication the physical layer provides :

A. Start and stop signaling
B. Flow control
C. Both A and B *
D. None of the above

1289. The physical layer is responsible for :

A. line coding
B. Channel coding
C. Modulation
D. All of the above

1290. The physical layer translates logical communication requests from the ____________ into hardware specific operations :

A. Data link layer *
B. Network layer
C. Transport layer
D. Application layer