Deck 1: Networking: Fundamental Concepts

Question 1

Switches within a network are interconnected by ___.

A) access links
B) peer-to-peer links
C) trunk links
D) channel links
E) internet links

Answer 1

C

Question 2

What connects a host to a nearly located switch?

A) trunk link
B) access link
C) backbone link
D) distribution link
E) circuit link

Answer 2

B

Question 3

The campus network (e.g., SDSU network) is an example of _______:

A) WAN (wide area network)
B) PAN (personal area network)
C) NFC (near field communication)
D) LAN (local area network)
E) MAN (metropolitan area network)

Answer 3

D

Question 4

Which may NOT be considered a key element of a computer network?

A) hosts
B) messages
C) networking (intermediary) devices
D) applications
E) people

Question 5

Which is NOT considered an intermediary device?

A) switch
B) router
C) wireless access point
D) bridge
E) network printer

Question 6

Which is a performance measure of network capacity/speed?

A) MB (megabyte)
B) Mbps (megabits per second)
C) Milliseconds
D) MBPS (megabytes per second)
E) Microseconds

Question 7

What represents actual data rate of a network?

A) channel capacity
B) rated speed
C) bandwidth
D) throughput
E) capacity

Question 8

I recently purchased a WiFi access router that says 200 Mbps fast! I was super excited as I was going to watch all the Netflix movies on my smartphone. When the device was installed at home, however, it only gives my smartphone 34Mbps ________!! I am disappointed.

A) channel capacity
B) rated speed
C) bandwidth
D) throughput
E) capacity

Question 9

Which is an inter-networking device?

A) switch
B) router
C) wireless access point
D) bridge
E) network printer

Question 10

Below are intermediary devices EXCEPT _________:

A) routers
B) switches
C) bridges
D) wireless access points
E) servers

Question 11

If I want to know the MAC and IP addresses of my Windows computer, I can use the _____ command at the command prompt (e.g., C:/ ).

A) ipconfig /all
B) traceroute
C) netstat -n -a
D) ping
E) telnet or SSH

Question 12

The enterprise network (or corporate network) of a firm can be composed of one or more:

A) LAN(s)
B) LAN(s) + WAN(s)
C) LAN(s) + MAN(s) + WAN(s)
D) LAN(s) + MAN(s)
E) All of the above

Question 13

Choose an ACCURATE statement regarding the MAC address.

A) A host station does not need a MAC address for networking.
B) A host station needs only a MAC address to exchange data over the network.
C) It is generally presented to people in its decimal format.
D) It is generally 32 bit-long.
E) It is printed on the network interface card (NIC).

Question 14

Which WAN topology may NOT be a cost-effective choice when there are many offices geographically distributed?

A) hub-and-spoke
B) full mesh
C) hierarchical
D) partial mesh
E) star

Question 15

The MAC address of a NIC should be set ___.

A) by the manufacturer
B) by the network administrator
C) by the DHCP server
D) when the computer restarts
E) by the operating system

Question 16

Which is a CORRECT statement on network addressing?

A) A node only needs an IP address for networking.
B) The IP address is also called as hardware address.
C) The MAC address consists of 12 hexadecimal characters (48 bits).
D) The MAC address of a device can be permanently changed.
E) OUI (organizational unique identifier) is an element of the IP address.

Question 17

What are three largest sources of delay (latency) in message transmissions?

A) propagation delay, delay at hosts, delay at intermediary devices
B) delay at hosts, delay at intermediary devices, delay due to packet collisions
C) delay of user response, delay at intermediary devices, propagation delay
D) delay of user response, delay at intermediary devices, delay due to packet collisions
E) propagation delay, delay at hosts, delay due to packet collisions

Question 18

The star topology is also called the __________ topology.

A) ring
B) tree
C) hub-and-spoke
D) tree
E) mesh

Question 19

Which may NOT be an advantage of client/server over peer-to-peer?

A) Easier protection of computing resources
B) Faster access to available resources
C) Easier to back up server data and files
D) Easier to maintain and upgrade servers
E) Easier initial setup

Question 20

Imagine that, after processing human input, the browser's HTTP protocol produces
"GET / HTTP/1.1
Host: www.savetrees.org".
Then, according to the _______ , the message means 'Please send me the main page of www.savetrees.org using the HTTP protocol, version 1.1.'

A) semantic rule
B) lexicon rule
C) syntactic rule
D) message rule
E) link rule

Question 21

What is the topology used to create the following WAN connections among distributed branch locations of a company?

A) star
B) partial mesh
C) tree
D) bus
E) ring

Question 22

What is the topology used to create the WAN connections?

A) star
B) partial mesh
C) tree
D) bus
E) ring

Question 23

Network nodes include ______.

A) intra-networking and inter-networking devices
B) intermediary devices and hosts
C) intermediary devices and network links
D) intermediary devices and networking devices
E) end devices and network links

Question 24

Choose a CORRECT statement on network addressing.

A) The network interface card of a computer has at least one IP address printed on it.
B) The MAC address is stored in a computer's hard drive.
C) A permanent IP address is dynamically allocated to a host station whenever it submits a request.
D) The MAC address does not have to be bound to a node physically.
E) To access LAN, a host station needs a pair of MAC and IP addresses.

Question 25

The QoS (Quality of Service) concept represents the capability of a network to offer guaranteed performance. Then which may be the LEAST relevant measure of QoS?

A) link capacity/speed
B) latency/delay
C) reliability
D) availability/unavailability
E) network topology

Question 26

Which CORRECTLY represents the degree of link redundancy from low to high?

A) hub and spoke - full mesh - partial mesh
B) hub and spoke - partial mesh - full mesh
C) partial mesh - full mesh - hub and spoke
D) full mesh - partial mesh - hub and spoke
E) partial mesh - hub and spoke - full mesh

Question 27

What is a metric of signal frequencies?

A) nanometers
B) decibel
C) voltage
D) hertz
E) bandwidth

Question 28

Which is NOT an attribute unique to analog signals?

A) Wavelength
B) Frequency
C) Phase
D) Amplitude
E) Clock cycle

Question 29

The following figure shows the process of _______ in data transmissions?

A) multiplexing
B) modulation
C) broadband
D) synchronous transmission
E) asynchronous transmission

Question 30

The following figure shows the process of _______ in data transmissions?

A) time division multiplexing
B) frequency division multiplexing
C) amplitude modulation
D) frequency modulation
E) statistical time division multiplexing

Question 31

Which two metrics of analog signals should be inversely associated?

A) Wavelength and amplitude
B) Wavelength and frequency
C) Wavelength and phase
D) Frequency and phase
E) Frequency and amplitude

Question 32

Modulation is technology to convert _______.

A) digital bit stream to a digital signal
B) analog data to an analog signal
C) analog data to a digital signal
D) analog data to ether an analog or a digital signal
E) digital bit stream to an analog signal

Question 33

What should happen when the number of signal states increases in digital signal encoding?

A) Transmission speed generally increases.
B) Error resistance generally increases.
C) Effective transmission distance generally increases.
D) Signal delay generally increases.
E) Signal interference decreases.