Deck 2: Networking and Physical Layer Protocols

Question 1

The Internetworking Protocol (IP) is a ________ protocol.

A)reliable
B)connection-oriented
C)both a and b
D)none of the above

Answer 1

none of the above

Question 2

_______ is a process-to-process protocol that adds only port addresses, checksum error control, and length information to the data from the upper layer.

A)TCP
B)UDP
C)IP
D)none of the above

Answer 2

UDP

Question 3

__________ provides full transport layer services to applications.

A)TCP
B)UDP
C)ARP
D)none of the above

Answer 3

TCP

Question 4

The ________ address, also known as the link address, is the address of a node as defined by its LAN or WAN.

A)port
B)physical
C)logical
D)none of the above

Question 5

Ethernet uses a ______ physical address that is imprinted on the network interface card (NIC).

A)32-bit
B)64-bit
C)6-byte
D)none of the above

Question 6

Which layer links the network support layers and user support layers

A)session layer
B)data link layer
C)transport layer
D)network layer

Question 7

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 mentioned

Question 8

Which address identifies a process on a host?

A)physical address
B)logical address
C)port address
D)specific address

Question 9

Transmission data rate is decided by

A)network layer
B)physical layer
C)data link layer
D)transport layer

Question 10

Physical layer provides

A)mechanical specifications of electrical connectors and cables
B)electrical specification of transmission line signal level
C)specification for IR over optical fiber
D)all of the mentioned

Question 11

The physical layer translates logical communication requests from the ______ into hardware specific operations.

A)data link layer
B)network layer
C)trasnport layer
D)application layer

Question 12

A single channel is shared by multiple signals by

A)analog modulation
B)digital modulation
C)multiplexing
D)none of the mentioned

Question 13

Wireless transmission can be done via

A)radio waves
B)microwaves
C)infrared
D)all of the mentioned

Question 14

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 mentioned

Question 15

The physical layer is responsible for

A)line coding
B)channel coding
C)modulation
D)all of the mentioned

Question 16

Attenuation means

A)loss of energy
B)change in form or shape of a signal
C)crosstalk
D)difference in frequency

Question 17

If r is the number of data elements carried per signal element, N is the data rate, and S is the signal rate, then

A)S= N x r
B)S = N/r
C)N = S x r x r
D)None of the above

Question 18

NRZ L and NRZ I differ in

A)synchronization
B)transition
C)Both a and b
D)None

Question 19

Analog to digital conversion can be done using

A)PCM
B)DM
C)Both a and b
D)Neither a nor b

Question 20

The frequency of the modulated signal is constant for the duration of one signal element, but changes for the next signal element if the data element changes. Both peak amplitude and phase remain constant for all signal elements. This is

A)PSK
B)FSK
C)ASK
D)None of the above

Question 21

QAM combines

A)ASK and FSK
B)FSK and PSK
C)ASK and PSK
D)None of the above

Question 22

Differential Manchester and multi line transmission (MLT-3) schemes differ in

A)Number of transition rules to encode binary data
B)Self synchronization
C)Both a and b
D)None of the above

Question 23

OSI model defines an open system as

A)a set of protocols that allows any two different systems to communicate
B)a set of rules for open access
C)a standard
D)None of the above

Question 24

1 TeraHertz =

A)1000000 Hz
B)1000000000 Hz
C)1000000000000 Hz
D)None of the above

Question 25

Shannon capacity formula for noisy channel is

A)C = B Log (SNR)
B)C = B Log (1/SNR)
C)C = B Log (1 + SNR)
D)None of the above