CIS3700 Local Area Network
Certification Exercise 1

Student Name: ______

LAN topologies, Access methods, Media

  1. Which Ethernet standard is limited to 10 megabits per second (Mbps) and can support cable segments up to a maximum distance of 185 meters (607 feet)?
a)10Base4
b)10Base5
c)10Base2
d)10BaseT
e)10BaseF / 62
  1. Which three media and connectors do 10Base2 networks use? (Choose three.)
a)UTP cable
b)STP cable
c)Thin coaxial cables (RG-58 cables)
d)T-connectors
e)BNC connectors
f)RJ-11 connectors / 66
  1. What is the maximum segment length of a 1000BaseT network?
a)100 meters
b)325 meters
c)550 meters
d)3 kilometers / 69
  1. Which network standard is limited to 10 megabits per seconds (Mbps) and can support a maximum distance of 100 meters (330 feet) between the hub/switch and a node?
a)10Base2
b)10Base5
c)10BaseF
d)10BaseT
e)10Base36 / 70
  1. Which IEEE standard uses a logical ring topology?
a)802.3
b)802.5
c)802.12
d)802.11b / 71
  1. How many pairs of wires does a 10BaseT cable use?
a)one
b)two
c)three
d)four / 72
  1. Which media connects a client to a 100BaseFX switch?
a)coaxial cable
b)fiber optic cable
c)Category 3 UTP
d)Category 5 UTP / 80
  1. Which cable type is less susceptible to interference?
a)UTP
b)STP
c)Coaxial cable
d)Fiber optic cable / 81
  1. Given:
  • A company is upgrading its existing 10BaseT network to 100BaseTX for faster performance.
  • The company has purchased and installed a 100BaseTX switch to replace its 10BaseT switch.
  • The NIC in the workstations are auto-negotiating 10/100 cards.
  • After the switch installation, no workstation can communicate.
  • A laptop plugged directly into any port on the 100BaseTX switch works fine.
  • The old 10BaseT switch is re-installed and all workstations begin to function.
What is the problem?
a)The company is using category 5 cabling
b)The company is using 10-foot patch cables
c)The company is using category 3 cabling
d)The total segment length to the workstations from the switch is less than 300 feet. / 88
  1. What is the maximum length of a 1000BaseCX segment?
a)25 meters
b)100 meters
c)550 meters
d)3 kilometers / 92
  1. What is the copper cable requirement for 100BaseT?
a)RG-58 Coax
b)RG-62 Coax
c)Category 3 UTP
d)Category 5 UTP / 97
  1. Which networking topology requires less hardware and cabling than other topologies?
a)Bus
b)Ring
c)Star
d)Mesh / 144
  1. Which topology connects computers via multiple paths?
a)Bus
b)Ring
c)Star
d)Mesh / 146
  1. Which connector should you use in a 10Base2 network?
a)SC (for fiber optic)
b)ST (for fiber optic)
c)BNC (for Thin coaxial cable)
d)RJ-45 (for twisted pair) / 149
  1. An Ethernet frame ends with a special bit called the Cyclic Redundancy Check (CRC). The CRC’s job is:
a)To cycle data across the network
b)To verify that MAC addresses are correct
c)To verify that data arrived correctly
d)To verify that the IP address is correct / M61
  1. Which of the following standards requires an external transceiver?
a)10Base5
b)10Base2
c)10BaseT
d)10BaseF / M124
  1. What kind of topology does 10Base2 use?
a)Mesh
b)Bus
c)Star
d)Ring / M124
  1. The first 24 bits of a MAC address are called a(n):
a)Device ID
b)Data ID
c)Organizationally Unique Identifier / M124
  1. The second 24 bits of a MAC address are called a(n):
a)Device ID
b)Data ID
c)Organizationally Unique Identifier / M124
  1. The type of connector used in 10Base5 is called a(n):
a)DB-15 or AUI
b)RJ-45
c)BNC
d)RG-58 / M125
  1. John’s PC, networked with a 10BaseT NIC, run perfectly yesterday. Today, he can’t access the network. Everyone else in the company can access the network, but not John. You look at the NIC and notice that both lights are off. You should first:
a)Try copying a file from another machine over the network
b)Verify that the hub is turned on
c)Replace the card
d)Make sure the NIC is connected to the hub / M202
  1. The CEO’s office is in the far corner of the building, and his PC cannot connect to the network. There are 107 meters of CAT5 UTP between the CEO’s system and the network hub. Evaluate the following:
Required result: Establish connectivity between the computer and the network
Optional result: Improve network performance and decrease network downtime
Proposed solution: Replace the CEO’s NIC with a 100BaseFX NIC
a)The proposed solution produces the required result only
b)The proposed solution produces the optional result only
c)The proposed solution produces both results
d)The proposed solution produces neither of the results / M202
  1. The following figure illustrates a network physical design.

Workstation B cannot retrieve files from server B. However, workstation A is able to retrieve files from server B without incident.
What is the most likely cause of this problem?
a)Bus failure b) Server B failure c) Router B failure d) Token Ring failure / 113
  1. The following figure illustrates a network physical design.

Users on the network segment shown are experiencing slow response time.
Which statement is true?
a)The network segment is open
b)The network is experiencing late collisions due to cable length
c)The network token passing is delayed due to large file transfer
d)The network is experiencing early collisions due to cable length. / 122
  1. You have a 10BaseT network. It is 10 meters between the NIC and the wall plug, 90 meters from the plug to the wiring closet, and 3 meters from the wiring closet to the hub. Your computer cannot connect. What should you do?
Required result: Connect to the server
Optional result: Fast connection, and Easier access for users.
Proposed solution: Replace the NIC with a 100BaseFX NIC
a)The proposed solution produces the required result only
b)The proposed solution produces the optional result only
c)The proposed solution produces both results
d)The proposed solution produces neither of the results / 181

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