Practice Test: Question Set - 10
1. The EIA-232 interface has _______ pins.
- (A) 20
- (B) 24
- (C) 25
- (D) 30
2. On a class B network, how many subnets are available with a subnet mask of 248?
- (A) 2
- (B) 6
- (C) 30
- (D) 62
3. Which of the following statements is correct?
- (A) Protocol
converters are the same as multiplexers
- (B) Protocol
converters are the same as TDMs
- (C) Protocol
converters are usually not operated in pairs
- (D) Protocol
converters are usually operated in
4. The OCR reading unit attached to a POS terminal is called a
- (A) Light pen
- (B) Wand
- (C) Cursor
- (D) All of the
above
5. Which of the following allows devices on one network to communicate with devices on another network?
- (A) Multiplexer
- (B) Gateway
- (C) T-switch
- (D) Modern
6. What is the first octet range for a class C IP address?
- (A) 192 - 255
- (B) 192 - 223
- (C) 192 - 226
- (D) 128 - 191
7. The loss in signal power as light travels down the fiber is called
- (A) Attenuation
- (B) Propagation
- (C) Scattering
- (D) Interruption
8. The size or magnitude of a voltage or current waveform is
- (A) Amplitude
- (B) Aloha
- (C) Angle
Modulation
- (D) Attenuation
9. A required characteristic of an online real-time system is:
- (A) More than
one CPU
- (B) Offline
batch processing
- (C) No delay in
processing
- (D) All of the
above
10. Telecommunications networks come in a wide range of speed and capacity capabilities. Select the best fit for answer:
- (A) Bandwidth
alternatives
- (B) Switching
alternating
- (C) Inter
organizational networks
- (D) Extranets
11. In OSI network architecture, the routing is performed by
- (A) Network
layer
- (B) Data link
layer
- (C) Transport
layer
- (D) Session layer
12. A teleprocessing system may consist of
- (A) User systems
- (B) Communications
systems
- (C) Computer
center systems
- (D) All of the
above
13. The data-link layer, in reference to the OSI model, specifies
- (A) Data
link procedures that provide for the exchange of data via frames that can be
sent and received
- (B) The
interface between the X.25 network and packet mode device
- (C) The virtual
circuit interface to packet-switched service
- (D) None of the
above
14. Error detection at the data link level is achieved by?
- (A) Bit
stuffing
- (B) Hamming
codes
- (C) Cyclic
Redundancy codes
- (D) Equalization
15. Because the configuration information for a DHCP client is received dynamically, you must use which utility to read the current configuration to verify the settings?
- (A) PING
- (B) TRACERT
- (C) ARP
- (D) IPCONFIG
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