Network+ N10-002

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What is OSI Layer 3?: Network
At what OSI Layer does a network hub operate?: The Physical Layer
At what OSI Layer does a Network Switch function at?: The Data-Link Layer, or Layer 2
What are the two sub-layers of the Data-Link Layer?: LLC (Logical Link Control) & MAC (Media Access Control)
What is Layer 5 in the OSI Reference Model?: Session
What is Layer 6 of the OSI Reference Model: Presentation
What port number is used for the SNMP protocol?: Port 161
What port number is used for TFTP?: Port 69
What port number is used for POP3?: Port 110
What port number is used for SMTP?: Port 25
What is Layer 4 of the OSI Reference Model?: The Transport Layer
At what OSI Layer does a bridge function at?: The Data-Link Layer, Layer 2
What is Layer 2 of the OSI Reference Model?: The Data-Link Layer
What is the common term for the IEEE Standard 802.5?: Token Ring
What is the maximum distance allowed for a 10BaseT Network Segment?: 100 Meters
Which two types of Backups clear the Archive Bit?: Full and Incremental
What is the Physical Topology of a Token Ring network?: Star
What is the Logical Topology of a Token Ring network?: Ring
What is the maximum length of a 10Base5 network segment?: 500 Meters
What does the "T" stand for in 10BaseT?: Twisted Pair
What does CSMA/CD stand for?: Carrier Sense Multiple Access/Collision Detection. It is used in Ethernet network communications.
What is Layer 1 of the OSI Reference Model?: The Physical Layer
What does OSI stand for?: Open System Interconnect
What does CSMA/CA stand for?: Carrier Sense Multiple Access/Collision Avoidance
Does the IEEE standard 802.11 use CSMA/CD or CSMA/CA?: Collision Detection Multiple Access/Collision Avoidance
What does DES stand for?: Data-Encryption Standard
What type of encryption key does DES use?: A 56-bit encryption key
What is the default encryption and security system for Windows 2000?: Kerberos
What does NAT stand for?: Network Addressing Translation
What does PPTP stand for?: Point-to-Point Tunneling Protocol
What does SSL stand for?: Secure Sockets Layer
Name two commonly used data encryption methods.: DES (Data-Encryption Standard) and RSA (Rivest, Shamir, and Adleman; named after it's creators)
What does ISDN stand for?: Integrated Services Digital Network
What does BRI stand for?: Basic Rate Interface
What does PRI stand for?: Primary Rate Interface
How many channels does BRI ISDN consist of?: 2 B-Channels, each with 64 Kbps, and 1 D-Channel
How many channels does PRI ISDN provide?: 23 B-Channels, each 64 Kbps, and 1 D-Channel
Which is faster, PRI ISDN or T-1?: They are roughly equivalant
What does SLIP stand for?: Serial Line Internet Protocol
What does PPP stand for?: Point-to-Point Protocol
What is the bandwidth of a T-1 Connection?: 1.54 Mbps
What does ATM stand for?: Asynchronous Transfer Mode
With what do you terminate Frame Relay?: CSU/DSU
What does CSU/DSU stand for?: Channel Service Unit/Data Service Unit
What does OPSF stand for?: Open Shortest Path First
What does RIP stand for?: Routing Information Protocol
What does POP stand for?: Post Office Protocol
What does EMI stand for?: Electomagnetic Interference
What does IMAP stand for?: Internet Mail Access Protocol
What does ICMP stand for?: Internet Control Message Protocol
What does HTTP stand for?: HyperText Transfer Protocol
What port does HTTP use?: Port 80
What does UNC stand for?: Universal Naming Convention
What TCP/IP utility would you use to test to see if you can see another computer on the network?: Ping
What are the two types of Routing Tables?: Static and Dynamic
What is Crosstalk?: Data on 2 separate media interfering with each other.
What are the 2 types of 802.3 cabling?: Coaxial and Twisted Pair
How long can a 1000BaseLX network segment be?: 550 Meters for Multimode, 5000 Meters for Singlemode
What physical topology is the easiest to expand?: Star
What is the 802 Ethernet standard for Gigabit?: 802.3z
What is attenuation?: Weakening of a data signal over distance.
What is the IEEE 802.2 standard?: LLC (Logical Link Control)
What does WAP stand for?: Wireless Access Point
What frequency does IEEE 802.11b operate at?: 2.4 GHz
What are 4 problems with copper cable in networks?: 1. Attenuation
2. Crosstalk
3. EMI
4. Signal Tampering
What are the 3 types of wireless media?: 1. Radio wave
2. InfraRed
3. Microwave
What are the 2 types of Microwave?: 1. Terrestial
2. Satellite
What port does HTTPS use?: Port 443
What port does FTP use?: Port 21
What is OSI Layer 7?: Application
What is the maximum distance for a 10Base2 network segment?: 185 Meters
Can part of the network still function if there is a break in a Thinnet network?: No
What type of Coaxial cable is used with 10Base5?: RG-8
What type of media is most resistant to crosstalk and EMI?: Fiber Optic
What type of network does the IEEE standard 802.3 specify?: Ethernet
What type of network does IEEE 802.11 specify?: Wireless
At what OSI Reference Model Layer does a NIC operate at?: Data-link, Layer 2
What is the primary purpose of the Network Layer of the OSI Reference Model?: Routing
At what OSI Layer does the Internet Protocol (IP) operate at?: Network, Layer 3
At what OSI Layer does the Transmission Control Protocol (TCP) operate?: Transport, Layer 4
What type of Routing Table is built automatically using RIP or a similar protocol?: Dynamic
What type of connector is used for a 10BaseT network?: RJ-45
What type of connector is used for a telephone or MODEM?: RJ-11
What type of connector is used on a 10Base2 network?: BNC
What type of Routing Table is built manually?: Static Routing Table
What IEEE 802 standard defines Fast Ethernet?: 802.3u
Describe an IPv6 address: 8 octet pairs of hexidecimal numbers, separated by colons.
i.e. 42de:75e5:21aa:cdb4:d773:cc21:554f
What does FDDI stand for?: Fiber Distributed Data Interface
What type of topology offers the best fault tolerance?: Mesh
At what OSI Layer does UDP operate at?: Transport, Layer 4
What does UDP stand for?: User Datagram Protocol
Is TCP a connectionless or a connection-oriented protocol?: Connection Oriented
Is IP a connectionless or a connection-oriented protocol?: Connectionless
Is UDP a connectionless or a connection-oriented protocol?: Connectionless
At what OSI Layer does FTP operate at?: Application, Layer 7
What does FTP stand for?: File Transfer Protocol
What does DNS stand for?: Domain Name Service
What port does DNS use?: Port 53
What method of communication does 1000BaseSX use?: Short Wavelength Laser
What type (Category) of cable is used for Fast Ethernet?: Cat 5
Physical topology for Fast Ethernet?: Star
What is the Logical Topology for Ethernet?: Bus
What is the physical topology for a 10Base2 network?: Bus
What does URL stand for?: Uniform Resource Locator
What does WINS stand for?: Windows Internet Name Service
What protocol resolves the IP address to the MAC address?: ARP
What does ARP stand for?: Address Resolution Protocol
What does FQDN stand for?: Fully Qualified Domain Name
What does NTP stand for?: Network Time Protocol
What does NNTP stand for?: Network News Transfer Protocol
What port does NNTP use?: Port 119
What port does Telnet use?: Port 23
What port does RIP use?: Port 520
What is the IEEE 802 standard for CSMA/CD?: 802.3
What port does SSH use?: Port 22
What does SSH stand for?: Secure Shell Protocol
What port does IMAP4 use?: Port 143
What port does NTP use?: Port 123
What does RI and RO stand for?: Ring In and Ring Out
What does Token Ring use instead of a hub?: MSAU (MultiStation Access Unit)
What does MSAU stand for?: MultiStation Access Unit
What range covers the Well-Known Ports of the TCP/IP protocol suite?: 0-1023
What range of ports are covered by what's known as the Registered Ports?: 1024 - 49151
What range of ports are covered by what's known as Dynamic or Private Ports?: 49,152 - 65,535
What is the range of Class A IP addresses?: 1.xxx.xxx.xxx - 126.255.255.255
What is the IP address reserved for local loopback?: 127.0.0.1
What is the range of Class B IP addresses?: 128.xxx.xxx.xxx - 191.255.255.255
What is the range of Class C IP addresses?: 192.0.0.0 - 223.255.255.255
What does IANA stand for?: Internet Assigned Numbers Authority
What is the private Class A IP address range?: 10.0.0.0 - 10.255.255.255
What is the Class B private IP address range?: 172.16.0.0 - 172.31.255.255
What is the Class C private IP address range?: 192.168.0.0 - 192.168.255.255
What protocol resolves NetBIOS names to IP addresses?: WINS
What protocol resolves hostnames to IP addresses?: DNS
What file can be used in place of DNS?: HOSTS
What does ICS stand for?: Internet Connection Sharing
What file can be used for NetBIOS name resolutino if a WINS server isn't available?: LMHOSTS
What is the purpose of NAT and ICS?: To translate private network addresses into public network addresses
Where does the HOSTS file reside if there isn't a DNS server? On the Server or on the Workstations?: Workstations
What does RAS stand for?: Remote Access Service

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