Questão 3497203

• Banca: INSTITUTO AOCP
• Órgão: PRODEB
• Ano: 2018
• Provas: INSTITUTO AOCP - 2018 - PRODEB - Especialista de TIC - Telecomunicações
• Disciplina: Inglês
• Assuntos: Interpretação de texto | Reading comprehension

Structured cabling using a UTP twisted-pair cable (not shielded) consists of several strands twisted between pairs and between strands. About the braided effect, we can say that:

• A. The braided effect is used to reduce cable attenuation.
• B. The braided effect decreases cable transfer speed.
• C. The braided effect increases the allowable distance on the cable.
• D. The braided effect determines which connector pattern to be used.
• E. The braided effect is used to ensure external and internal noise immunity to the cable.

Gabarito: E

Comentários

• A braided cable creates a screen or shield around the conductors which directly reduces the electromagnetic influence from other sources either internal or external. = Um cabo trançado cria uma tela ou blindagem ao redor dos condutores que reduz diretamente a influência eletromagnética de outras fontes internas ou externas.

  Gabarito letra E

• e-

  UTP nao tem blindagem física interna, sua proteção é o "efeito de cancelamento", onde mutuamente reduz a interferência eletromagnética de radiofrequência.

  Unshielded twisted pair (UTP) cables are found in many Ethernet networks and telephone systems. For indoor telephone applications, UTP is often grouped into sets of 25 pairs according to a standard 25-pair color code originally developed by AT&T Corporation. A typical subset of these colors (white/blue, blue/white, white/orange, orange/white) shows up in most UTP cables.

  https://en.wikipedia.org/wiki/Twisted_pair