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1)Please see the Diagram, and identify which LAN technology is being used? 1. 2. 3. 4.

Ethernet Token Ring Mesh ATM

2)Can a repeater enable communication between a Ethernet LAN and a Token Ring LAN? Yes No 3)Which of the following media types is most susceptible to EMI? A.

Fiber Optic

B.

STP

C.

Co-axial

D.

UTP

4)What layer of the OSI model does a Router work at? Physical Connection Application Network Does not exist 5)Which layer in the OSI model is responsible for error handling? Session Network DataLink Transport None of the Above 6)Which layer in the OSI model is responsible for data compression? Application Presentation System Transport None of the Above 7)What is multiplexing? Transmitting information via a modem Combining signals and transmitting them together Sending multiple separate network cables Using a router to send information over multiple networks A fictitious term. 8)What is the maximum data throughput on Category 4 cable?

5 Mbps 10 Mbps 20 Mbps 2 Mbps 55 Mbps 9)What is the most common network medium? Fiber Copper Gold Silver None of the Above 10)Which type of connector assembly is responsible for twisted-pair? AUI BNC BBC RJ-55 RJ-45 11)A broadcast message is an example of which dialog control method? A. Half duplex B. Baseband C. Broadband D. Simplex E. Full duplex 1 Which of the following are connectionless protocols? (Choose the 2) three best answers.) A. IP B. SPX C. IPX D. UDP 13)What is a router? A . B .

A hardware device that connects dissimilar networks, such as Cat 5 cabling and FDDI A network host that reads the source and destination addresses in the packet header and makes decisions about where to forward the packet C A network host that can forward LAN-based email messages onto . the Internet, after repackaging them into the SMTP format D A software system that can translate between dissimilar networks . such as Ethernet and Token Ring

14)Which of the following network classes is reserved for multicast addresses only? A. Class A B. Class B C. Class C D. Class D E. Class E 15)Which of the following statements describes a star topology? A. Less reliable than a ring topology B. All network computers get equal network access through the use of CSMA/CD C. Requires more cabling than a bus topology D. More difficult to troubleshoot than a ring topology 16)Given the choices below, which would best be described as a Class C address range? A. 111-126 B. 128-191 C. 192-223 D. 224-239 17)What is a crossover cable typically used for? A. Perform NIC loopback tests B. Extend the maximum cable length C. Connect two hubs together D. Transmit test data to devices E. Connect a computer to a switch 18)How can you protect your private network from the Internet? [Choose the two best answers] A. Firewall B. Password security C. MAC port grouping D. VLAN

19)What device is used to connect a computer with another computer through the telephone system? A) Modem B) Network interface card

C) Telephone adapter D) Telephone transceiver