1 X.25 is ---
• an analog
packet-switched technology designed for long-distance data transmission
• a digital
packet-switched technology designed for long-distance data transmission
• an analog
packet-switched technology designed for short-distance data transmission
• a digital
packet-switched technology designed for short-distance data transmission
2 Frame relay is ---
• an
updated digital version of X.25
• an
updated analog version of X.25
• an
updated digital version
• an
updated digital version of packet switching
3 Wireless LANs use high frequency radio signals, infrared
light beams, or lasers to communicate between the workstations and the --- or
hubs
• PCs
• signals
• mesh
• file
servers
4 The two most common types of infrared communications used
in schools are ---
• line-of-sight
and scattered broadcast
• line-of-sight
and broadcast
• line-of-point
and scattered broadcast
• line-of-sight
and scattered addressing
5 What is a disadvantage of Wireless LANs?
• good
security
• bad
environment
• poor
environment
• poor
security
6 … media can be used in LANs
• Strong
• Available
• Wireless
• Thick
7 Ethernet Addressing uses ---
• PAC
address
• PAN
address
• MAC
address
• PBC
address
8 The form of an IP address in IPv4 is ---
• aaa.bbb.ccc
• aaa.bbb.ccc.mmm
• aaa.ccc.mmm
• bbb.ccc.mmm
9 NIC stands for
• Network
Interface Card
• Network
Interface Cord
• Network
Intel Card
• Network
Intel Cord
10 How many bytes do Ethernet frame has?
• 6
• 7
• 8
• 9
11 There are two IP addressing schemes: --- and private
• secret
• general
• common
• hierarchical
12 An IP address consists of --- bits of information
• 8
• 16
• 24
• 32
13 Common LAN topologies include ---, tree, star, and ring
• bus
• circle
• hierarchical
• cube
14 Key LAN components are computers, ---, NICs, hubs, and
cables
• PCs
• machines
• NOS
• testers
15 LANs are designed ---
• to
operate within unlimited geographic area
• to
operate within a limited geography
• to
incorporate within a limited geographic area
• to
operate within a limited geographic area
16 A LAN is owned, operated, and used by a --- organization
• different
• same
• single
• non
17 MANs (Metropolitan Area Networks) are --- versions of
LANs
• smaller
• same
• larger
• different
18 WANs are usually --- networks
• peer-to-peer
• peer-to-point
• point-to-peer
• point-to-point
19 A dial-up connection ---
• is one in
which a user connects via a modem to a distant network from a computer and
stays connected
• is one in
which a user connects via a modem to a distant network from a computer and stays connected for a finite period of time
• is one in
which a user connects via a modem to a distant network from a computer and connected for a finite time
• is one in
which a user connects via a PC to a distant network from a computer and stays connected for a finite period of time
20 DQDB is short for
• Distributed
Queue Dual Bit
• Distributed
Queue Dual Byte
• Distributed
Queue Dual Bingo
• Distributed
Queue Dual Bus
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