3DX7X Vol 1: Unit 5

16 Questions | By Simba1021 | Updated: Mar 22, 2022 | Attempts: 219

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Networks and Network Devices

Questions and Answers

1.

The design of communications network is known as
- A.
  
  An internet suite
- B.
  
  The physical layer
- C.
  
  Network architecture
- D.
  
  Network implementation
2.

What kind of network is a group of computers and associated devices that share a common communications line within a small geographic area?
- A.
  
  Metropolitan Area Network (MAN)
- B.
  
  Virtual Private Network (VPN)
- C.
  
  Local Area Network (LAN)
- D.
  
  Wide Area Network (WAN)
3.

What kind of network interconnects users with computer resources in a geographic area or a region like a city?
- A.
  
  Local Area Network (LAN)
- B.
  
  Wide Area Network (WAN)
- C.
  
  Virtual Private Network (VPN)
- D.
  
  Metropolitan Area Network (MAN)
4.

Which 802.11 standard is designed to operate at both 2.4GHz and 5 GHz?
- A.
  
  802.11a
- B.
  
  802.11b
- C.
  
  802.11g
- D.
  
  802.11n
5.

Which 802.11 standard has a throughput of 11 Mbps and runs at the 2.4 GHz frequency?
- A.
  
  802.11a
- B.
  
  802.11b
- C.
  
  802.11g
- D.
  
  802.11n
6.

What topology defines the layout of a network's devices and media?
- A.
  
  Physical
- B.
  
  Logical
- C.
  
  Hybrid
- D.
  
  Star
7.

What topology consists of cable segments from each computer connected to a centralized component?
- A.
  
  Star
- B.
  
  Bus
- C.
  
  Ring
- D.
  
  Hybrid
8.

Over a single pair cable, Integrated Services Digital Network (ISDN) is capable of transmission rates of
- A.
  
  256 Kbps
- B.
  
  256 Mbps
- C.
  
  144 Mbps
- D.
  
  144 Kbps
9.

A modem is a device that
- A.
  
  Transmits on every link attached to it
- B.
  
  Modulates and demodulates data signals
- C.
  
  Uses algorithms to determine optimal path to end destination
- D.
  
  Operates on the Network layer of the Open Systems Interconnection (OSI) modelr
10.

What Data Link Layer network device logically separates a single network into two segments or collision domains in Ethernet networks?
- A.
  
  Hub
- B.
  
  Bridge
- C.
  
  Switch
- D.
  
  Router
11.

Two basic routing activities are determining optimal routing paths and
- A.
  
  Modulation of Datagram through an internetwork
- B.
  
  Layer-1 error determination and correction through an internetwork
- C.
  
  Virtual Private Network (VPN) tunnel determination through an internetwork
- D.
  
  Transporting information groups (packets) through an internetwork
12.

Dynamic routing automatically calculates the best path between how many nodes?
- A.
  
  2
- B.
  
  3
- C.
  
  4
- D.
  
  5
13.

What type of encryption is applied to each end of a communications line in a distributed network, and ensures all information flowing is unintelligible to an unauthorized intruder?
- A.
  
  Line encryption
- B.
  
  Link encryption
- C.
  
  Device encryption
- D.
  
  End-to-End encryption
14.

Which type of cable is associated with the original designs of the Ethernet standard?
- A.
  
  Coaxial cable
- B.
  
  Fiber optic cable
- C.
  
  Shielded twisted-pair (STP)
- D.
  
  Unshielded twisted-pair (UTP)
15.

Which transmission medium is the primary carrier of voice communications?
- A.
  
  Twisted pair cable
- B.
  
  Fiber optic cable
- C.
  
  Coaxial cable
- D.
  
  Twinax cable
16.

What is the most common wireless networking standard?
- A.
  
  802.3
- B.
  
  802.9
- C.
  
  802.11
- D.
  
  802.14