1 How is a MAC address represented? four groups of eight binary digits separated by a decimal point four Base10 digits separated by a decimal point six hexadecimal digits X twelve hexadecimal digits twenty-four Base10 digits 2 Which of the following are specified by IEEE standards as sublayers of the OSI data link layer? (Choose two.) X Logical Link Control Logical Layer Control X Media Access Control Logical Link Communication Media Access Communication Physical Access Communication 3 Which of the following are features of a Token Ring network? (Choose two.) X collisionless environment non-deterministic X deterministic uses CSMA/CD prone to collisions 4 Which ports on a hub forward traffic? only to the port where the destination host resides to the ports in all other collision domains X all ports except the originating port all ports 5 Which characteristics of Ethernet contribute to its widespread use? (Choose three.) X ease of maintenance collision free technology X scalability X low cost of installation compatibility with 802.5 standard collision avoidance capabilities 6 Ethernet standard specifications limit network service interruption. Select the items that describe the standards. (Choose three.) minimum segment length X maximum segment length minimum number of stations per segment X maximum number of stations per segment minimum number of repeaters between segments X maximum number of repeaters between segments 7 What is the name of the Layer 2 Protocol Data Unit(PDU)? packet X frame bit data segment 8 What is the length of a MAC address? 8 bits 8 bytes 24 bits 24 bytes X 48 bits 48 bytes 9 Which of the following are the functions of CSMA/CD? (Choose three.) X transmitting and receiving data packets releasing a token when the network is clear X detecting errors within data packets or on the network passing a token to each station on the network X decoding data packets and checking them for valid addresses before passing them to the upper layers of the OSI model 10 In which two layers of the OSI model does Ethernet function? (Choose two.) application session transport network X data link X physical 11 Which statements below are true about Ethernet? (Choose three.) addresses the needs of Layer 2 and Layer 3 of the OSI model first released as a Xerox proprietary standard X essentially the same as 802.3 standards X bandwidth can be increased without changing the underlying technology essentially the same as 802.2 standards X original idea developed at the University of Hawaii 12 Which options below are field names of a generic frame? (Choose three.) IP header voltage reference X data description X length X frame check sequence 13 What does the word "Base" indicate in 10Base2? The number standard used. X Baseband signaling is used. Only a portion of the transmission medium is used. Broadband signaling is used. 14 What happens on an Ethernet network after a collision occurs? (Choose three.) X A backoff algorithm is invoked and transmission is stopped. Devices involved in the collision have a random period of time for priority retransmission of the damaged packet. The devices involved in the collision release a token indicating the time each station may begin retransmitting. X The devices involved in the collision do not have priority to transmit data. X The devices with data to transmit return to a listen-before-transmit mode. Transmit work will restart with the reissuance of all data. 15 After an Ethernet collision, when the backoff algorithm is invoked, which device has priority to transmit data? the device involved in the collision with the lowest MAC address the device involved in the collision with the lowest IP address X any device in the collision domain whose backoff timer expires first those that began transmitting at the same time 16 Where does the MAC address originate? DHCP server database configured by the administrator X burned into ROM on the NIC card network configuration on the computer included in the creation of the processor chip 17 Which features describe the concept of Carrier Sense Multiple Access with Collision Detection? (Choose two.) collisionless environment X non-deterministic deterministic X uses first-come, first-served approach uses a token to transmit data 18 Which of the following is included in the frame address field? (Choose two.) source IP address destination IP address destination subnet mask X source MAC address X destination MAC address