CCNA 1 Chapter 08

Cisco CCNA1-Chapter-08  Correct Questions Answers 100%

01. An installed fiber run can be checked for faults, integrity, and the performance of the media by using what device?

  • light injector;
  • OTDR ;
  • TDR ;
  • Multimeter .

02. Which characteristics describe fiber optic cable? (Choose two.)

  • It is not affected by EMI or RFI;
  • Each pair of cables is wrapped in metallic foil;
  • It combines the technique of cancellation, shielding and twisting to protect data;
  • It has a maximum speed of 100 Mbps;
  • It is the most expensive type of LAN cabling.

03. Which of the following is a characteristic of single-mode fiber-optic cable?

  • generally uses LEDs as the light source;
  • relatively larger core with multiple light paths;
  • less expensive than multimode;
  • generally uses lasers as the light source.

04. What is a possible effect of improperly applying a connector to a network cable?

  • Data will be forwarded to the wrong node;
  • Data transmitted through that cable may experience signal loss;
  • An improper signaling method will be implemented for data transmitted on that cable;
  • The encoding method for data sent on that cable will change to compensate for the improper connection.

05. With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?

  • the magnetic field around the adjacent pairs of wire;
  • the use of braided wire to shield the adjacent wire pairs;
  • the reflection of the electrical wave back from the far end of the cable;
  • the collision caused by two nodes trying to use the media simultaneously.

06. What characteristic of UTP cable helps reduce the effects of interference?

  • the metal braiding in the shielding;
  • the reflective cladding around core;
  • the twisting of the wires in the cable ;
  • the insulating material in the outer jacket.

07. In LAN installations where potential electrical hazards or electromagnetic interference may be present, what type of media is recommended for backbone cabling?

  • coax;
  • fiber ;
  • Cat5e UTP;
  • Cat6 UTP;
  • STP.

08. Which method of signal transmission uses radio waves to carry signals?

  • electrical;
  • optical;
  • wireless ;
  • acoustic .

09. What are three measures of data transfer? (Choose three.)

  • goodput;
  • frequency ;
  • amplitude ;
  • throughput ;
  • crosstalk ;
  • bandwidth .

10.Which type of cable run is most often associated with fiber-optic cable?

  • backbone cable;
  • horizontal cable;
  • patch cable;
  • work area cable

11. When is a straight-through cable used in a network?

  • when connecting a router through the console port;
  • when connecting one switch to another switch;
  • when connecting a host to a switch ;
  • when connecting a router to another router

12. What is considered a benefit of wireless  as  a media choice?

  • more host mobility;
  • lower security risks;
  • reduced susceptibility to interference;
  • less impact of the surroundings on the effective coverage area.

13. In most business LANs, which connector is used with twisted-pair networking cable?

  • BNC;
  • RJ-11 ;
  • RJ-45 ;
  • Type F .

14. Which OSI layer is responsible for binary transmission, cable specification, and physical aspects of network communication?

  • Presentation;
  • Transport;
  • Data Link;
  • Physical .

15. Which fiber connector supports full duplex Ethernet?
   This one

16.What is a primary role of the Physical layer in transmitting data on the network?

  • create the signals that represent the bits in each frame on to the media;
  • provide physical addressing to the devices;
  • determine the path packets take through the network;
  • control data access to the media.

17.  Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet connection between Host A and Host B?

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