Expect minimum percentage: 100% 1. What three processes does a router execute when it receives a packet from one network that is destined for another network? (Choose three.) ans: decapsulates the Layer 3 packet by stripping off the Layer 2 frame header uses the destination IP Address in the IP header to look up the next-hop address in the routing table encapsulates the Layer 3 packet into the new Layer 2 frame and forwards it out the exit interface 2. Which interfaces in the exhibit could be used for a leased line WAN connection? (Choose two.) ans: 1 4 3. Refer to the exhibit. After host 2 is connected to the switch on the LAN, host 2 is unable to communicate with host 1. What is the cause of this problem? ans: Host 1 and host 2 are on different networks. 4. Which of the following is the correct flow of routines for a router startup? ans: load bootstrap, load IOS, apply configuration 5. What is the default sequence for loading the configuration … [Read more...]
Erouting v4.0 Chapter 3
Expect minimum percentage: 100% 1) Refer to the exhibit. Which statement correctly describes how R1 will determine the best path to R2? ans: R1 will install an EIGRP route using network B in its routing table because the administrative distance of EIGRP is lower than RIP. 2) Which two statements are true regarding classless routing protocols? (Choose two.) ans: sends subnet mask information in routing updates allows for use of both 192.168.1.0/30 and 192.168.1.16/28 subnets in the same topology 3) Which command would the network administrator issue to determine if load balancing is in effect on a router? ans: show ip route 4) Which statement is true regarding routing protocols? ans: EIGRP uses DUAL to calculate the shortest path and can be configured to do unequal cost load balancing. 5) An engineer creates a static route by entering the Router(config)# ip route 10.0.0.0 255.255.255.0 192.168.1.2 command. What can be concluded about this … [Read more...]
ENetwork v4.0 Chapter 10
Expect minimum percentage: 100% 1) Refer to the exhibit. A student working in the lab selects a cable that is wired as shown. Which connection types can successfully be made with this cable? (Choose two.) ans: connecting two routers together via their fast ethernet ports connecting two devices with the same interface type at Fast Ethernet speeds 2) Which option identifies the primary interface which would be used for initial configuration of a Cisco router? ans: console interface 3) What makes fiber preferable to copper cabling for interconnecting buildings? (Choose three.) ans: greater distances per cable run limited susceptibility to EMI/RFI greater bandwidth potential 4) A network administrator is required to use media in the network that can run up to 100 meters in cable length without using repeaters. The chosen media must be inexpensive and easily installed. The installation will be in a pre-existing building with limited cabling space. Which … [Read more...]
ENetwork v4.0 Chapter 9
Expect minimum percentage: 97.7% 1) In the graphic, Host A has reached 50% completion in sending a 1 KB Ethernet frame to Host D when Host B wishes to transmit its own frame to Host C. What must Host B do? ans: Host B must wait until it is certain that Host A has completed sending its frame. 2) Ethernet operates at which layers of the OSI model? (Choose two.) ans: Physical layer Data-link layer 3) Which of the following describe interframe spacing? (Choose two.) ans: the minimum interval, measured in bit-times, that any station must wait before sending another frame the time allowed for slow stations to process a frame and prepare for the next frame 4) What three primary functions does data link layer encapsulation provide? (Choose three.) ans: addressing error detection frame delimiting 5) When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired? ans: The hosts … [Read more...]
ENetwork v4.0 Chapter 8
Expect minimum percentage: 94.3% 1) What are the five elements that make up the fiber-optic cable? ans: core, cladding, buffer, strength material, and outer jacket 2) In a UTP crossover cable, which pairs of pins are crossed? (Choose two.) ans: 1 and 2 3 and 6 3) Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet connection between Host A and Host B? ans: crossover cable 4) Which of the following is a characteristic of single-mode fiber-optic cable? ans: generally uses lasers as the light source 5) Which method of signal transmission uses radio waves to carry signals? ans: wireless 6) Which characteristics describe fiber optic cable? (Choose two.) ans: It is not affected by EMI or RFI. It is the most expensive type of LAN cabling. 7) When is a straight-through cable used in a network? ans: when connecting a host to a switch 8) Which OSI layer is responsible for binary transmission, cable specification, … [Read more...]
ENetwork v4.0 Chapter 7
Expect minimum percentage: 97.7% 1) Which IEEE specification defines Wi-Fi technology? ans: 802.11 2) What is true regarding media access control? (Choose three.) ans: Ethernet utilizes CSMA/CD defined as placement of data frames on the media Data Link layer protocols define the rules for access to different media 3) Which characteristics describe carrier sense multiple access collision detect (CSMA/CD)? (Choose three.) ans: nondeterministic collision environment first-come, first-served approach 4) Which options are properties of contention-based media access for a shared media? (Choose three) ans: non-deterministic less overhead collisions exist 5) What determines the method of media access control? (Choose two.) ans: media sharing logical topology 6) What is true concerning physical and logical topologies? ans: Logical topologies consist of virtual connections between nodes. 7) Which of the following are sublayers of the Data … [Read more...]
ENetwork v4.0 Chapter 6
Expect minimum percentage: 100% 1) How many bits make up an IPv4 address? ans: 32 2) Refer to the exhibit. A network administrator has to develop an IP addressing scheme that uses the 192.168.1.0 /24 address space. The network that contains the serial link has already been addressed out of a separate range. Each network will be allocated the same number of host addresses. Which network mask will be appropriate to address the remaining networks? ans: 255.255.255.192 3) Refer to the exhibit. The network administrator has assigned the internetwork of LBMISS an address range of 192.168.10.0. This address range has been subnetted using a /29 mask. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network (subnet zero is the first subnet). By company policies, the router interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which … [Read more...]
ENetwork v4.0 Chapter 5
Expect minimum percentage: 100% 1) In an IPv4 environment, what information is used by the router to forward data packets from one interface of a router to another? ans: destination network address 2) What information is added during encapsulation at OSI Layer 3? ans: source and destination IP address 3) In a connectionless system, which of the following is correct? ans: The destination is not contacted before a packet is sent. 4) Which IP packet field will prevent endless loops? ans: time-to-live 5) Which portion of the network layer address does a router use to forward packets? ans: network portion 6) Refer to the exhibit. Using the network in the exhibit, what would be the default gateway address for host A in the 192.133.219.0 network? ans: 192.133.219.1 7) If the default gateway is configured incorrectly on the host, what is the impact on communications? ans: The host can communicate with other hosts on the local network, but is … [Read more...]
ENetwork v4.0 Chapter 4
Expect minimum percentage: 92.7% 1. Based on the transport layer header shown in the diagram, which of the following statements describe the established session? (Choose two.) ans: This contains a Telnet request. This is a TCP header. 2. With TCP/IP data encapsulation, which range of port numbers identifies all well-known applications? ans: 0 to 1023 3. Why are port numbers included in the TCP header of a segment? ans: to enable a receiving host to forward the data to the appropriate application 4. Which OSI model layer is responsible for regulating the flow of information from source to destination, reliably and accurately? ans: transport 5. Refer to the exhibit. Host A is using FTP to download a large file from Server 1. During the download process, Server 1 does not receive an acknowledgment from Host A for several bytes of transferred data. What action will Server 1 take as a result? ans: reach a timeout and resend the data that needs to be … [Read more...]
ENetwork v4.0 Chapter 2
Expect minimum percentage: 83% 1)Which two layers of the OSI model have the same functions as the TCP/IP model Network Access Layer? (Choose two.) ans: Physical Data Link 2)What is a primary function of the trailer information added by the data link layer encapsulation? ans: supports error detection 3)During the encapsulation process, what occurs at the data link layer? ans: physical address is added. 4)What device is considered an intermediary device? ans: switch 5)Which layer encapsulates the segment into packets? ans: network 6)Which statements correctly identify the role of intermediary devices in the network? (Choose three.) ans: determine pathways for data retime and retransmit data signals manage data flows 7)What can be identified by examining the network layer header? ans: the path to use to reach the destination host 8)What is the proper order of the layers of the OSI model from the highest layer to the lowest … [Read more...]
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