Subnetting uses custom rather than the default subnet masks. This is also known as classless addressing. In other words, the subnet cannot be assumed just by looking at the address.
5.2 What is an alternate IP configuration?
--root domain (.)
--Top level domains (TLDs) such as .com, .edu, .gov...
1. look in local cache
2. checks hosts file
3. contacts dns
4. sends the name info to DNS.
5. DNS checks its own zone cache and hosts file. if nothing goes to other zones it holds.
6. DNS server requests info from the top-level domain server. The server returns the address of a DNS server with the info for the next highest domain.
7. DNS server places info in its cache. The client places the info in its cache and then goes to destination.
1. Address of known network
2. interface or next hop router used to reach the destination network.
3. A cost value (metric) that identifies the desirability of the route to the destination network.
4. A timeout value that identifies when the route expires.
4.1 what are optional
bits to pad?
workstation/router to hub/switch
regular port on hub or switch to uplink port on a hub or a switch.
RJ45 to serial (RS-232) Connect the serial port on a workstation to a console connector on a router or switch. OR RJ45 on both ends and then serial adapter.
4.3When connecting devices, crossover must be performed an ____ number of times.
to define a default route. If this is not defined, a router will just drop packets it doesn't know about.
0.0.0.0 with a mask of 0.0.0.0 identifies a default route in the routing table.
It modulates digital data from the PC into analog data and transmits it on a telephone network.
It demodulates analog data from a telephone network into digital PC data.
3.1 Which of the following is a valid MAC address?
3.2 Your company purchases a new bridge, which filters packets based on the MAC address of the destination computer. On which layer of the OSI model is the device functioning?
3.2 Which of the following best describes how a switch functions?
a. it connects multiple segments of different architectures. It translates frames, and forwards them to the approp segment.
b. it connects multiple segments of different architectures. It translates frams, and broadcasts them to all of its ports.
c. it connects multiple cable segments (or devices), and forwards frames to the appropo segment.
d. it connects multiple cable segments (or devices, and broadcasts frames to all of its ports.
3.3 Which two of the following tasks do routers perform?
a.Control access to the transmission media
b.maintain info about paths through an internetwork
c.route data based on logical network addresses.
d.multiplex signals onto the same transmission media
e. identify devices through hardware addresses.
route data based on hardware device addresses.
4.1 Which of the following use CSMA/CD access method?
4.1 A network is connected following the IEEE 802.3 specs. Which of the following describes when a device can transmit messages?
a. device transmits when ready
b. device requests permission from a controlling device.
c. device with the token can use the transmission media.
d. device is notified of its turn to send messages.
e. device listens to determine if the transmission media is free.
4.2 Which gigabit ethernet standard can support long network segments up to a maximum of 5 km when used with single mode fiber-optic cable?
4.2 You have been tasked with designing a high-speed ethernet entwork. Your client's building already has 150-ohm shielded twisted pair (STP) wiring installed. Due to budget constraints, they have asked you to reuse the existing wiring instead of installing new fiber-optic cabling. Which ethernet standard could you implement in thsi situation?
1000BaseT, 1000BaseSX, 1000BaseCX, 1000BaseLX, 1000BaseZX, 10BaseFL
4.2 Which of the following standards is used by SONET?
You would like to implement 10 Gbps ethernet over a distance of 1 kilometer or greater. Which of the following would be the minimum requirement for the implementation? (Select 2)
a. 10GBaseER standards, b. 10GBaseSR standards, c. 10GBaseLR standards, d. Multimode fiber, e. single mode fiber
4.2 You have been tasked with designing an ethernet network. Your client needs to implement a very high-speed network backbone between campus buildings; some of which are around 300 m apart. Multimode fiber-optic cabling has already been installed between buildings. Yourclient has asked that you use the existing cabling. Which ethernet standard meets these guidelines? (Choose two)
a. 1000BaseSX, b. 10BaseFL, c. 1000BaseT, d. 1000BaseCX, e. 10GBaseER, f. 10GBaseSR
physical star/logical star
physical star/logical bus
4.3 You need to connect a workstation to a switch using a regular port on the switch (not an uplink port). The switch does not support auto-MDI.
Which type of cable should you use?
4.3 You want to connect the LAN port on a router to the uplink port on a switch. The switch does not support auto-MDI. Which type of cable should you use?
5.1 Your network has been assigned the Class C network address of 184.108.40.206. Which three of the following addresses can be assigned to hosts on this network?
220.127.116.117, 18.104.22.168, 22.214.171.124, 126.96.36.199, 188.8.131.52, 184.108.40.206, 220.127.116.11
5.1 Which of the following is the first IP address that can be assigned to hosts on the 18.104.22.168 network using the default subnet mask?
22.214.171.124, 126.96.36.199, 188.8.131.52, 184.108.40.206, 220.127.116.11
Consider the following IP addresses.
Which list represents the IP address class of each listed IP address?
5.1 Your network has been assigned the Class B address of 18.104.22.168. Which of the following is not an address you can assign to a node on your network.
22.214.171.124, 126.96.36.199, 188.8.131.52, 184.108.40.206
5.1 What is the decimal format of the following binary IP address?
5.1 In an IP addressing scheme using default subnet masks, which of the following IP addresses can you assign to a host?
a. 127.0.0.1, b. 127.35.88.92, c. 220.127.116.11, d. 18.104.22.168
5.4 Which of the following best describes OSPF?
1. classless distance vector routing protocol.
2. classful distance vector routing protocol.
3. classful link-state routing protocol.
4. classless link-state routing protocol.
5.4 Which terms are often synonymous with or made possible with CIDR (two)
5.4 What are the main differences between the OSPF and IS-IS routing protocols?
1. OSPF requires an area 0, while IS-IS does not. 2. is a link state protocol, while IS-IS is not. 3. OSPF is an IGP routing protocol , while IS-IS is a BGP routing protocol. 4. OSPF is a classful protocol, while IS-IS is a classless protocol.
5.4 A router is connected to network 192.168.1.0/24 and network 192.168.2.0/24. The router is configured to use RIP and has learned of networks 192.168.3.0/24 and 192.168.4.0/24. The next hop router for network 192.168.3.0 has changed. You need to make the change with the least amount of effort possible. What should you do?
1. Wait for convergence to take place. 2. Manually reconfigure the default route to point to the new next hop router. 3. Stop and restart the RIP protocol on the router. 4. Force RIP to perform an immediate update.
5.4 A router is connected to network 192.168.1.0/24 and 2.0/24. the router is configured to use RIP and has learned 3.0/24 and 4.0/24. There is no default route configured on the router.
The router receives a packet addressed to network 10.1.0.0/16. What will the router do with the packet?
5.4 Under which of the following circumstances might you implement BGP on your company network and share routes with Internet routers?
1. If the network has over 15 hops. 2. If the network is connected to the Internet using multiple ISPs. If the network has over 15 areas and uses IPv6. If the network is connected to the internet using public addressing.
prefix (first 64 bits)
interface ID (last 64 bits)
When the U/L is set to 0, the MAC is burned-in. When it is set to 1, MAC has been configured locally.
-6-to-4 tunneling for implementations across sites
-Teredo for tunneling between two hosts
creates logical groups of hosts-messages sent to the group are received by all group members.
Used for streaming video and audio (netmeeting or windows media viewer).
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