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Network+ Final
Final Review
| Question | Answer |
|---|---|
| How many layers does the OSI model contain? | 7 |
| NICS send and receive binary data as pulses of all of the following except: | gamma rays |
| Which layer of the OSI model uses routers and IP addresses to ensure that packets arrive at the correct system? | Network |
| What is the Network layer unique identifier assigned to each device on a TCP/IP network? | IP Address |
| Which of the following is another name for a MAC address? | Physical |
| A MAC address is composed of which two parts? | the organizationally unique identifier and the unique device ID of the NIC |
| Select the one function below that a NIC does NOT perform. | It routes data across the most efficient route on the network |
| What device do you need to split large network into smaller ones? | Router |
| Which of the following statements best describes an IP address? | It is a unique dotted decimal number assigned to every network node |
| Which of the following is a broadcast MAC address? | FF-FF-FF-FF-FF-FF |
| At which of the OSI model does network cabling belong? | Physical |
| Most network technologies that is fiber-optic is which type of fiber optic cables? | multimode |
| What kind of cable is describes as a central conductor wire, surrounded by insulating materials, placed inside a braided metal shield? | coaxial |
| What type of fiber-optic cable uses lasers to send signals? | single-mode |
| Which kind of cabling would you select when you need to cover distances that span kilometers? | fiber-optic |
| Which connector is used for UTP cabling on a network? | RJ-45 |
| UTP category ratings are based on what? | The highest frequency and bandwidth that the cable can handle |
| Which of the following cable types does NOT use copper wires? | fiber-optic |
| Which kind of cable does not provide any protection against EMI? | UTP |
| Of the following, which is the fastest category of UTP cabling? | CAT6 |
| What does it mean if a NIC runs in promiscuous mode? | It processes all frames |
| What kind of cabling does the 10BaseFL standard specify? | Fiber-Optic |
| What is the meaning of the "10" in 10BaseT? | maximum speed of 10 Mbps |
| Which of the following statements best describes the preamble of an Ethernet frame? | It includes 64-bits of alternating ones and zeros that ends with 11 to notify the receiving NIC that a frame is starting |
| What is the maximum distance between a hub and a node on a 10BaseT network? | 100 Meters |
| Which of the following is true of an Ethernet hub? | It reads a signal coming in from one port and repeats the signal out to the other ports. |
| Which standard specifies multimode cabling? | 10BaseFL |
| When a collision occurs on a network relying on the CSMA/CD access method, what alerts the NICs? | overlapping signals |
| How many pins does an RJ-45 connector have? | 8 |
| Which type of cabling does the 10BaseT standard specify? | UTP |
| What general type of cabling is a tech most likely to use when installing Ethernet cabling in areas with high electrical interference? | fiber-optic |
| If you have a 100BaseT switched Ethernet network, what is the theoretical maximum bandwidth using full duplex NICs? | 200 Mbps |
| What is the limit to the number of nodes in every version of Ethernet? | 1024 |
| What "R" in the standard 10GBaseSR stands for which type of signaling? | LAN |
| What is the maximum cable length for a 1000BaseT network? | 100 meters |
| The specification for 100BaseTX calls for UTP cabling using__________or better rated cabling. | CAT 5e |
| What type of fiber-optic cabling and connectors does a 100BaseFX network use? | Multimode with ST or SC connectors |
| The "W" in the standard 10BaseSW stands for which type of signaling? | SONET/WAN |
| This term is used to refer to any of the several variations of Ethernet that operate at 100 Mbs. | Fast Ethernet |
| When a multispeed, auto-sensing 100BaseT NIC connects to a 10BaseT Ethernet hub, at what speed will the NIC function? | 10 Mbps sending and receiving |
| How many binary digits are inan IPv4 address? | 32 |
| Which of the following is a valid IP address for an individual system expressed in dotted-decimal notation? | 215.233.32.91 |
| What is the MAC broadcast address? | FF.FF.FF.FF.FF.FF |
| At which layer of the TCP/IP protocol stack do HTTP, FTP, and DNS reside? | Application Layer |
| What is the default subnet mask for a class C network? | 255.255.255.0 |
| Which of the following automatically gives out IP information to computers that request it? | DHCP |
| Which of the following is another way of representing the subnet mask 255.255.255.0 | /24 |
| What is the de facto protocol suite of the Internet? | TCP/IP |
| What is the range of decimal values in each of the four groups (octets) of an IPv4 address? | 0 to 255 |
| Which of the following protocols is connection-oriented? | TCP |
| Some manufacturers, such as Cisco, use this term to refer to either overloaded NAT or port forwarding. | Port Address Translation (PAT) |
| What is the term used for the passage of a packet through a router? | hop |
| Which type of NAT is the most popular? | PAT |
| Routers using the OSPF protocol are organized into these groups. | Areas |
| IN a NAT router, what is the name for an arbitrary number generated by the sending computer? | source port |
| What is the protocol developed by Cisco for enterprise-wide routing environments? | EIGRP |
| When a NAT router uses this in conjunction with IP addresses, it helps to solve the two problems of security and limited IP addresses. | TCP/IP port numbers |
| On a TCP/IP network, what information within a packet does a router use to determine where an incoming packet should go? | destination IP addresses |
| What is the one protocol used on the Internet for communication between Autonomous Systems? | Border Gateway Protocol (BGP-4) |
| With this type of NAT, many computers can share a pool of routable IP addresses that number fewer than the computers. | Dynamic NAT |
| When troubleshooting a potential wireless hardware problem, open this Windows utility to see if there is an error or conflict with the wireless adapter. | Device Manager |
| What type of unit is formed by a single WAP servicing a given area? | Basic Service Set (BSS) |
| Which of the following is a method for limiting access to your wireless network based on the physical addresses of wireless NICs? | MAC address filtering |
| What method of extending a wireless network creates an Extended Service Set? | adding a WAP |
| This data encryption standard is the weakest of the wireless encryption standard of the wireless encryption standards, with many problems, including encryption that is easy to break; it only encrypts the Data Link and Physical layers, the key is static... | Wired Equivalent Privacy (WEP) |
| This encryption standard uses a 128-bit block cipher that is more difficult to crack that the 128-bit TKIP wrapper of the previous standard. | Wi-Fi Protected Access 2 (WPA2) |
| Which Wi-Fi standard offers speeds of up to 100 Mbps (or higher), a range of up to about 200 feet, and operates in the 2.4 GHz and 5.0 GHz frequencies? | 802.11n |
| Which of the following is used to describe a portion of available spectrum? | channel |
| Which term applies to how well your wireless device is connecting to other devices? | signal strength |
| When configuring a WAP, set this to something unique and easily identified, and follow up by giving this same name on all wireless hosts that should connect to this network. | SSID |
| This term describes any program that sends information about you or your computer over the Internet without your consent. | Spyware |
| This type of device accepts something of the user, such as a fingerprint, retina scan, or voiceprint in place of password. | Biometric devices |
| This term describes an unauthorized person who is intentionally trying to access resources on your network. | Hacker |
| What firewall technology allows or denies access to a network according to the MAC address of the computer seeking access? | MAC filtering |
| What is the name for the most recent and more nefarious form of social engineering tactics? | Phishing |
| What type of attack uses zombie computers to bring a network down under a massive number of requests? | DDOS |
| This is a network's first line of defense against external threats. | Firewall |
| This term describes several methods for spreading data across multiple drives. | RAID |
| Network components will fail, and you can sum up the best protection against such failure in one word. | Redundancy |
| This common technique, employed at the edge of a network, eliminates the need for public IP addresses on private network whiles hiding the actual addresses of internal network hosts. | Network Address Translation (NAT) |
| Which of the following is the most limiting factor in a host's ability to run virtual machines? | RAM |
| All of the following are virtual machine managers EXCEPT: | Snes9X |
| Which of the following operating systems, when added as a virtual machine, requires a separate, licensed copy? | Microsoft Windows |
| What is the term for an environment created by software, with sight and sound provided by video and audio equipment, primarily used for gaming and simulation? | virtual reality |
| A virtual machine that is not powered on is stored as a: | set of files |
| Which of the following describes software or hardware that converts the commands to and from the host machine into an entirely different platform? | emulator |
| Which of the following requires an underlying operating system in order to create and manage virtual machines? | virtual machine manager (VMM) |
| What is another term for a virtual machine? | guest |
| Which of the following terms describe a point-in-time backup of a virtual machine? | snapshot |
| Which of the following creates a complete environment for a guest operating system to function as though that operating system were installed on its own computer? | visualization |
| What function is being used if a packet is sent to port 80? | Web browsing |
| A communication between computers that begins with an acknowledgement, followed by a message, and ends with a closing acknowledgement is which type of communication? | connection-oriented |
| What is the name for the number used by the operating system to track all running programs? | process ID (PID) |
| This is the secure counterpart of HTTP: | HTTPS |
| Most computer connections use this Transport layer protocol: | TCP |
| Microsoft Internet Explorer and Mozilla Firefox are examples of this type of TCP/IP application: | Web client |
| This type of port has a number in the 1024 to 49151 range: | registered port |
| What protocol handles outgoing e-mail? | SMTP |
| This is the underlying protocol on the World Wide Web: | HTTP |
| What name is given to the port numbers in the range of 0 to 1023? | well-known port numbers |
| What is the best tool for testing DNS? | ping |
| Which of the following would confirm that you have a DNS problem? | PING works with the IP address, but not with the FQDN |
| Which of the following is NOT a top-level domain name? | .html |
| Which of the following characters is not permitted in a DNS domain or host name? | Spaces |
| What organization oversees the registration of domain names? | ICANN |
| Which of the following statements is true about DNS root services? | They have the complete definitive name resolution table |
| What enables a DNS server to determine an FQDN by knowing the IP address? | Reverse Lookup Zones |
| Which of the following is NOT part of a fully qualified domain name (FQDN)? | the IP address |
| In the syntax for a domain name, what character/s separates a domain name from its subdomains? | a dot (.) |
| Which is the correct sequence according to the DNS naming convention? | host.domain.root |
Created by:
angelstewart
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