CDA 94637

Type

Quiz

Book Title

Business Data Networks and Security 10th Edition

ISBN 13

978-0133544015

July 19, 2017

BPSK modulation uses two ________.

A) amplitudes

B) frequencies

C) phases

D) none of the above

Which is NOT one of the three parts of a public IPv6 unicast address?

A) subnet ID

B) routing prefix

C) host part

D) All of the above are parts in a public IPv6 unicast address.

A message's semantics is its ________.

A) protocol

B) message order

C) meaning

D) structure

Which offers stronger security?

A) WPA

B) 802.11i

C) Both A and B offer equally strong security.

The total length of an IPv4 address is ________ bits.

A) 8

B) 16

C) 32

D) We cannot say.

A TCP segment begins with octet 8,658 and ends with octet 12,783. What number does

the receiving host put in the acknowledgment number field of the TCP segment that

acknowledges this TCP segment?

A) 8,658

B) 8,659

C) 12,783

D) 12,784

Plenum wiring is needed for ________.

A) heavy traffic loads

B) safety

C) both A and B

D) neither A nor B

Control is done on individual switches and routers in ________.

A) traditional operation

B) SDN

C) both A and B

D) neither A nor B

In telephone wiring, there need to be four wires for each computer on the floor in

________.

A) horizontal distribution

B) vertical distribution

C) both A and B

D) neither A nor B

What is the maximum power for POE Plus in the standard?

A) 15 watts

B) 25 watts

C) 75 watts

D) 150 watts

Netflix uses the most VMs ________.

A) on weekends

B) on weekdays

C) in the evenings

D) during the day

In Internets, different networks are connected by ________.

A) switches

B) routers

C) PCs

D) hot spots

You discover that you can get into other e-mail accounts after you have logged in under

your account. You spend just a few minutes looking at another user's mail. Is that

hacking?

A) Yes

B) No

C) We cannot say from the information given.

At what layer(s) do you find single network standards?

A) Layer 1

B) Layer 2

C) both A and B

D) neither A nor B

A sending host will retransmit a TCP segment if it ________.

A) receives an ACK segment

B) receives a NAC segment

C) receives an RPT segment

D) none of the above

In the Five General Layers Standard, which layer's standards govern application

message fragmentation?

A) 2

B) 3

C) 4

D) 5

Multiplexing ________.

A) reduces cost

B) increases transmission speed

C) both A and B

D) neither A nor B

What is the strongest security protocol for 802.11 today?

A) 802.11i

B) 802.11s

C) 802.11X

D) WPA

Which of the following is true about NAT?

A) It can enhance security.

B) It presents problems for some protocols.

C) both A and B

D) neither A nor B

In the mask 255.255.255.0, how many 1s are there?

A) 8

B) 16

C) 24

D) We cannot say.

802.11 data link layer standards govern ________.

A) frame organization

B) access point operation

C) both A and B

D) neither A nor B

IPsec is used for ________ VPNs.

A) remote-access

B) site-to-site

C) both A and B

D) neither A nor B

In symmetric key encryption, a key must be ________ bits long, or longer, to be

considered strong. (Choose the choice closest to the correct answer.)

A) 36

B) 56

C) 64

D) 128

2.4 GHz and 5 GHz are ________.

A) frequency spectrums

B) broadbands

C) channels

D) service bands

How many DNS root servers are there?

A) 1

B) 2

C) 10

D) 13

PSTN signaling in the United States uses ________.

A) SS7

B) ATM

C) TDM

D) SIP

If someone has been properly authenticated, they should receive ________ permissions.

A) all

B) no

C) maximum

D) minimum

Dividing an application message into a series of smaller message segments is called

________.

A) fragmentation

B) packetization

C) serialization

D) multiplexing

For 100,000 addresses, which will have fewer rows?

A) a routing table

B) an Ethernet switching table

C) Both will be about the same length.

Which can be moved more easily?

A) a physical server

B) a virtual machine

C) Both are about equally easy to move.

D) Neither can be moved easily.