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Final Exam Flashcards

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1
Q

The wireless device that is marked X in the following image is a ________. (has smart phone in image).

wireless access point
wireless router
wireless controller
wireless switch

A

wireless router

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2
Q

The strength of the electromagnetic waves being radiated from an antenna is referred to as gain, which involves a measurement of both direction and efficiency of a transmission. Gain is commonly measured using the dBi unit of measure.

True
False

A

True

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3
Q

When a wireless channel uses more than one frequency, the transmission method is called a ________ spectrum.

broad
multi
long
spread

A

spread

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4
Q

Which of the following is not a variation of spread-spectrum technology?

DSSS
FHSS
DFSS
OFDM

A

DFSS

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5
Q

Which of the following wireless standards operate at a maximum bandwidth of less than 20 Mbps? (Choose two.)

  1. 11
  2. 11a
  3. 11b
  4. 11g
A
  1. 11

802. 11b

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6
Q

WLANs can be categorized based on their use of wireless APs. The three main categories are ________, ________, and ________.

HBSS, BSS, ESS
IBSS, BSS, RSS
HBSS, BSS, IBSS
IBSS, BSS, ESS

A

IBSS, BSS, ESS

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7
Q

WLANs use a technology called carrier sense multiple access collision detection (CSMA/CD).

True
False

A

False

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8
Q

What is the 802.11 2.4-GHz band channel width?

22 MHz
40 MHz
5 MHz
12 MHz

A

22 MHz

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9
Q

Which channel is not one of the non-overlapping channels when using the 802.11 2.4-GHz band?

1
5
6
11

A

5

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10
Q

An omnidirectional antenna radiates power at relatively unequal power levels in all directions (somewhat similar to the theoretical isotropic antenna)

True
False

A

False

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11
Q

Which is not a security threat for WLANs?

Warchalking
Rogue access point
Wardialing
WEP and WPA security cracking

A

Wardialing

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12
Q

To protect WLAN traffic from eavesdroppers, a variety of security standards and practices have been developed, including all of the following except what?

Enabling SSID broadcast
MAC address filtering
Preshared key
IEEE 802.1X

A

Enabling SSID broadcast

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13
Q

Which of the following is not a WLAN security standard?

WEP
WAP
WPA
WPA2

A

WAP

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14
Q

WPA2 uses Counter Mode with Cipher Block Chaining Message Authentication Code Protocol (CCMP) for integrity checking and Data Encryption Standard (DES) for encryption.

True
False

A

False

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15
Q

WLAN security based on a PSK technology is called ________ mode.

personal
private
home
WEP

A

personal

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16
Q

Which of the following are broad categories of wireless antenna that are based on coverage? (Choose two.)

WLAN
SSID
Omnidirectional
Unidirectional
Wired Equivalent Protocol (WEP)
A

Unidirectional

Omnidirectional

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17
Q

Which of the following is a variation of spread-spectrum technology use in wireless local-area networks? (Choose three.)

WEP
Wi-Fi
WPA - 2
Direct-sequence spread spectrum (DSSS)
Frequency-hopping spread spectrum (FHSS)
Orthogonal frequency-division multiplexing (OFDM)
A

Direct-sequence spread spectrum (DSSS)
Frequency-hopping spread spectrum (FHSS)
Orthogonal frequency-division multiplexing (OFDM)

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18
Q

What transmission method is used with IEEE 802.11ac?

DSS
FHSS
OFDM
FHDM

A

OFDM

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19
Q

Which IEEE standard is used to authenticate wireless clients?

  1. 11i
  2. 3ac
  3. 2af
  4. 1X
A

802.1X

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20
Q

What is the encryption mechanism that is used with the WPA2 security standard?

AES
RC4
SHA-1
MD5

A

AES

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21
Q

The following image is an example of what type of WAN connection? (3 buildings each with routers connecting to a cloud)

ISDN network, packet-switched connection
Frame Relay network, circuit-switched connection
Frame Relay network, packet-switched connection
ISDN network, circuit switched connection

A

Frame Relay network, packet-switched connection

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22
Q

The data rate for a T3 link is ________.

45.736 Mbps to 51.84 Mbps
44.736 Mbps to 52.84 Mbps
44.736 Mbps
40 Mbps to 50 Mbps

A

44.736 Mbps

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23
Q

Which of the following are not examples of wireless media?

Cellular phone
LTE
HSPA+
DSL

A

DSL

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24
Q

If the bandwidth of an OC-1 link is 51.84 Mbps, what is the bandwidth of an OC-3 link?

155 Mbps

  1. 84 Mbps
  2. 52 Mbps
  3. 54 Mbps
25
Asynchronous Transfer Mode (ATM), a cell-switched connection technology that uses 53-byte fixed-length cells, is often categorized as a packet-switched connection technology. True False
True
26
Which of the following is a common Layer 2 protocol that could run over a dedicated leased line? Transmission Control Protocol (TCP) Point-to-Point Protocol (PPP) Internetwork Packet Exchange/Sequenced Packet Exchange (IPX/SPX) Routing Information Protocol (RIP)
Point-to-Point Protocol (PPP)
27
A service level agreement (SLA) is used to specify the specific performance metrics (for example, available bandwidth and maximum delay) that are guaranteed for a service over a certain percentage True False
True
28
Which type of ISDN circuit provides 23 B channels and 1 D channel? BRI IDSL PRI SDSL
PRI
29
What is the name of the digital modem device that is used to terminate a T1 circuit? SmartJack Network interface CSU/DSU ESU
CSU/DSU
30
What are the two different supported frame formats that are used when deploying a T1 leased line? Super Frame Extended Super Frame Multi Frame Distributed Frame
Super Frame | Extended Super Frame
31
A common Layer 2 protocol used on dedicated leased lines is ________. PPP CHAP TCP/IP IPsec
PPP
32
Which is not a primary feature offered by Link Control Protocol (LCP)? Looped-link detection Error detection Authentication Packet detection
Packet detection
33
A demarc is the point in a telephone network where the maintenance responsibility passes from a telephone company to the subscriber (unless the subscriber has purchased inside wiring maintenance). True False
True
34
MPLS inserts a 32-bit header between Layer 2 and Layer 3 headers. Because this header is ________ between the Layer 2 and Layer 3 headers, it is sometimes referred to as a(n) ________ header. inserted, insert added, addon inserted, proxy shimmed, shim
shimmed, shim
35
What are the two commonly available PPP authentication mechanisms? PAP RADIUS TACACS+ CHAP
PAP | CHAP
36
What is the name of the protocol that is commonly used to authenticate devices that connect via DSL? SLIP PPPoE PPP ROAM
PPPoE
37
What is the maximum distance that an ADSL modem (client) can be from a provider's DSLAM? 14,000 feet 15,000 feet 18,000 feet 22,000 feet
18,000 feet
38
What is the theoretical maximum downstream speed of ADSL? 4 Mbps 1.544 Mbps 52 Mbps 8 Mbps
8 Mbps
39
What is the name of the specification that indicates the frequencies that are dedicated for data transmission over cable lines? DOCSIS EIA/TIA 568a SONET IEEE 802.6
DOCSIS
40
Both PC1 and Server 1 have a default gateway. What is the purpose of a default gateway? Block packets Forward frames Route packets to a different subnet Route packets to the same subnet
Route packets to a different subnet
41
What is the purpose of ARP? ARP resolves the MAC address to a NetBIOS name. ARP resolves an IP address to a hostname. ARP locates the default gateway of the network. ARP resolves the IP address of a Host to its MAC address.
ARP resolves the IP address of a Host to its MAC address.
42
The routes on R1 and R2 are directly connected routes. True False
True
43
At the moment, PC1 cannot reach the Internet. You add a static default route to R1 that sends all traffic to an unknown destination out S1/1 and add a static default route to R2 that sends all traffic to unknown destination out S1/0. Can a user on PC1 access the Internet? Yes, PC1 has Internet access. No, packets will not make it past R1. No, packets can make it to the Internet, but they will never make it back to PC1. No, packets will stop at R2
No, packets can make it to the Internet, but they will never make it back to PC1.
44
What is the administrative distance of a directly connected network? 0 90 110 170
0
45
What is the administrative distance for an internal EIGRP route? 1 90 110 170
90
46
What are the two methods used to prevent loops in a distance vector routing protocol? Split horizon and hold-down timer Split horizon and poison reverse Poison reverse and hop count Split horizon and hop count
Split horizon and poison reverse
47
Which of the following is an exterior gateway protocol? BGP RIP OSPF EIGRP
BGP
48
Which of the following is a distance vector routing protocol that uses a metric of hops? IS-IS OSPF EIGRP Correct RIP
RIP
49
Match the type of NAT on the left with the correct definition on the right. a) Inside local b) Inside global c) Outside local d) Outside global 1. A public IP address referencing an outside device 2. A public IP address referencing an inside device 3. A private IP address referencing an outside device 4. A private IP address referencing an inside device A1 B2 C3 D4 A4 B2 C3 D1 A3 B2 C4 D1 A2 B1 C4 D3
A4 B2 C3 D1
50
For static NAT to work, how many inside global addresses are needed for inside local addresses? One inside global addresses for unlimited inside local addresses Two inside global addresses for every inside local address Ten inside global addresses for unlimited inside local addresses One inside global address for every inside local address
One inside global address for every inside local address
51
R1 is using both NAT and PAT. What is the purpose of the port numbers in the translation table? Basic NAT uses the port numbers to track separate communication flows. PAT uses the port numbers to track separate communication flows. The port numbers are not used. PAT only uses the destination port to track separate communication flows.
PAT uses the port numbers to track separate communication flows.
52
Which of the following is a multicast routing protocol? PIM IGMP IS-IS OSPF
PIM
53
What is the hop count that is used by RIP to indicate an unreachable metric? 16 0 15 255
16
54
What factors are used to calculate the OSPF cost? Bandwidth, delay Bandwidth Delay Bandwidth, MTU
Bandwidth
55
What factors are used in the calculation of the default EIGRP metric? Delay Bandwidth Bandwidth, delay Bandwidth, MTU
Bandwidth, delay
56
Which message type was added with IGMP Version 2? Join Prune Combine Leave
Leave
57
Which feature was added with IGMPv3 that allowed a client to specify the joining of a group and a specific source server? SSM SRM SME SMJ
SSM
58
Which mode of PIM uses a source distribution tree? Sparse mode Dense mode Broadcast mode Source mode
Dense mode
59
Which mode of PIM uses a rendezvous point (RP)? Broadcast mode Dense mode Sparse mode Source mode
Sparse mode

Networking (4 decks)

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