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  • Domain 6: Data Communications

The SSCP Prep Guide: Mastering the Seven Key Areas of System Security

Debra S. Isaac, Michael J. Isaac

Chapter 7

Domain 6: Data Communications - all with Video Answers

Educators

Chapter Questions

01:07

Problem 1

Which statement about the difference between analog and digital signals is correct?
a. Analog signals cannot be used for data communications.
b. A digital signal produces an infinite waveform.
c. An analog signal produces a sawtooth waveform.
d. An analog signal can be varied by amplification.

Ajay Singhal
Ajay Singhal
Numerade Educator

Problem 2

Which answer is NOT true about the difference between TCP and UDP?
a. UDP is considered a connectionless protocol, and TCP is connectionoriented.
b. TCP is considered a connectionless protocol, and UDP is connectionoriented.
c. TCP acknowledges the receipt of packets, and UDP does not.
d. UDP is sometimes referred to as an unreliable protocol.

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01:00

Problem 3

Which choice is correct about the difference between conducted versus radiated transmission media?
a. Microwave is a conducted transmission media.
b. Infrared is a radiated transmission media.
c. Fiber-optic cable uses a radiated transmission media.
d. UTP uses a radiated transmission media.

Hast Aggarwal
Hast Aggarwal
Numerade Educator
04:17

Problem 4

Which choice describes the range for Internet multicast addresses?
a. 0.0.0.0. through 255.255.255.255
b. 127.0 .0 .1 through 127.255 .255 .255
c. 192.168 .0 .0 through 192.168.255.255
d. 224.0 .0 .0 through 239.255 .255 .255

Samriddhi Singh
Samriddhi Singh
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Problem 5

Which UTP cable category is rated for $1 \mathrm{Gbps}$ ?
a. Category 4
b. Category 6
c. Category 5
d. Category 7

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Problem 6

Which choice BEST describes UTP cable?
a. UTP consists of a hollow outer cylindrical conductor surrounding a single, inner conductor.
b. UTP requires a fixed spacing between connections.
c. UTP consists of two insulated wires wrapped around each other in a regular spiral pattern.
d. UTP carries signals as light waves.

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Problem 7

To what does 10 Base- 2 refer?
a. $10 \mathrm{Mbps}$ thinnet coax cabling rated to 185 meters maximum length
b. $10 \mathrm{Mbps}$ thicknet coax cabling rated to 500 meters maximum length
c. $10 \mathrm{Mbps}$ baseband optical fiber
d. $100 \mathrm{Mbps}$ unshielded twisted pair cabling

James Kiss
James Kiss
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Problem 8

FDDI uses what type of network topology?
a. Ring
b. Bus
c. Switched
d. Star

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Problem 9

Which choice is NOT an element of IPSec?
a. Encapsulating Security Payload (ESP)
b. Authentication Header (AH)
c. Security Association (SA)
d. Point Tunneling Protocol (PPTP)

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Problem 10

Which IEEE protocol defines wireless transmission in data rates up to $54 \mathrm{Mbps}$ but is expected to be backward-compatible with existing 802.11 b-based networks?
a. IEEE $802.11 \mathrm{~g}$
b. IEEE $802.11 \mathrm{~b}$
c. IEEE 802.11 a
d. IEEE 802.15

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Problem 11

Which LAN transmission method describes a packet sent from a single source to a single destination?
a. Unicast
b. Multicast
c. Broadcast
d. Anycast

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01:40

Problem 12

Which choice BEST describes a property of UDP?
a. Creates seven distinct layers
b. Wraps data from one layer around a data packet from an adjoining layer
c. Provides "best-effort" delivery of a data packet
d. Makes the network transmission deterministic

Vysakh M
Vysakh M
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Problem 13

Which choice employs a dedicated, point-to-point technology?
a. Frame Relay
b. SMDS
c. T1
d. $X .25$

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01:40

Problem 14

Which TCP/IP protocol operates at the Transport layer?
a. FTP
b. IP
c. TCP
d. NFS

Vysakh M
Vysakh M
Numerade Educator
01:07

Problem 15

Which is a property of fiber-optic cabling?
a. Employs copper wire in the single, inner conductor
b. Transmits at slower speeds than copper cable
c. Harder to tap than copper cabling
d. Consists of two insulated wires wrapped around each other

Narayan Hari
Narayan Hari
Numerade Educator

Problem 16

Which choice about L2TP is NOT true?
a. L2TP is a predecessor to PPTP.
b. PPTP is a predecessor to L2TP.
c. L2TP does not include any mechanism for encryption or authentication of its traffic.
d. L2TP is used by some IPSec VPNs.

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Problem 17

Which process is an OSI Data Link layer function?
a. Internetwork packet routing
b. LAN bridging
c. SMTP gateway services
d. Signal regeneration and repeating

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Problem 18

The protocol of the Wireless Application Protocol (WAP), which performs functions similar to SSL in the TCP/IP protocol, is called the:
a. Wireless Session Protocol (WSP)
b. Wireless Application Environment (WAE)
c. Wireless Transport Layer Security Protocol (WTLS)
d. Wireless Transaction Protocol (WTP)

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Problem 19

Which of the following is considered a property of Ethernet networks?
a. These networks were originally designed to serve large, bandwidthconsuming applications.
b. Workstations cannot transmit until they receive a token.
c. All end stations are attached to a MSAU.
d. These networks were originally designed to serve sporadic and only occasionally heavy traffic.

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Problem 20

Which IEEE standard defines wireless networking in the $2.4 \mathrm{GHz}$ band with speeds of up to $11 \mathrm{Mbps}$ ?
a. 802.5
b. 802.11 a
c. 802.3
d. $802.11 \mathrm{~b}$

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Problem 21

Which choice most accurately describes S/MIME?
a. It gives a user remote access to a command prompt across a secure, encrypted session.
b. It uses two protocols: the Authentication Header and the Encapsulating Security Payload.
c. It is a widely used standard of securing email at the Application level.
d. It enables an application to have authenticated, encrypted communications across a network.

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Problem 22

Which choice defines an interface to the first commercially successful, connection-oriented packet-switching network?
a. X.25
b. Frame Relay
c. SMDS
d. ATM

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Problem 23

Which standard defines copper cable as its physical media?
a. 1000BaseLX
b. 1000BaseSX
c. 1000 BaseCX
d. 100 BaseFX

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Problem 24

Which protocol is a management protocol for IP networks?
a. ICMP
b. RARP
c. TFTP
d. ARP

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Problem 25

Which IEEE protocol specifies an Ethernet bus topology using CSMA/CD?
a. IEEE 802.5
b. IEEE 802.3
c. IEEE 802.11
d. IEEE $802.1 \mathrm{D}$

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Problem 26

Which type of cabling is referred to as "ThickNet"?
a. 10Base2
b. 10 Base 5
c. Twinax
d. UTP Cat5

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Problem 27

Which choice is a Presentation layer specification for digital certificates?
a. X. 500
b. $X .509$
c. $X .25$
d. $X .400$

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Problem 28

What could be a problem with Token Ring-type network topology?
a. Lost tokens must be regenerated to re-enable network communications.
b. Cabling termination errors can crash the entire network.
c. A cable break can stop all communications.
d. The network nodes are connected to a central LAN device.

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Problem 29

Which statement about VPNs is incorrect?
a. L2TP is used by some IPSec VPNs.
b. Proprietary schemes restrict the user to a particular vendor's VPN products.
c. Some VPN clients use proprietary technologies.
d. Proprietary schemes benefit from testing by a wider community of users.

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Problem 30

Which choice is NOT a type of security testing?
a. Penetration testing
b. War gaming
c. Vulnerability scanning
d. Network mapping

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