1. (TCO 5) _____ is a network-scanning technique used to identify which host IP addresses are operational. (Points : 5)

Answer: Ping sweep

2. (TCO 5) _____ create(s) noise that interferes with information being transmitted across unshielded copper cabling. (Points : 5)

Answer: The radio frequency interference

3. (TCO 5) _____ is used in Ethernet where some pairs of twisted-pair wires are crossed, when comparing the RJ-45 connectors on either end of the cable. These 10BASE-T and 100BASE-T cables connect the pair at pins 1 and 2 on each end to pins 3 and 6 on the other end. (Points : 5)

Answer: Crossover cable

4. (TCO 5) _____ is a general term referring to any energy signal on a transmission medium that is not part of the signal used to transmit data over that medium. (Points : 5)

Answer: Noise

5. (TCO 5) _____ are a collection of data that establishes a reference for network performance and behavior over a period of time. (Points : 5)

Answer: Network baselines

6. (TCO 5) The ______ provides a physical connection to the network (from the network end (Telco, ISP) of the user-to-network equipment), forwards traffic, and provides a clocking signal used to synchronize data transmission. (Points : 5)

Answer: data communication equipment

7. (TCO 5) The _______ command will bring up a router interface. (Points : 5)

Answer: Router(config-if)#no shutdown

8. (TCO 5) A(n) _____ is an interference by magnetic signals caused by the flow of electricity. (Points : 5)

Answer: electromagnetic interference

9. (TCO 5) _____ are parameters used with a command from a set of predefined values. (Points : 5)

Answer: Arguments

10. (TCO 6) _____ Ethernet standard allows the transmission of data at 1,000,000,000 (one billion) bits per second. (Points : 5)

Answer: The gigabit

11. (TCO 6) The _____ table is used by a switch to associate MAC addresses with the outgoing port and LAN bridge to make forwarding and filtering decisions. It is also called a CAM table when referred to on Cisco LAN switches. (Points : 5)

Answer: ARP

12. (TCO 6) _____ refers to the time that occurs between when something is sent in a network and when it is received by another device. (Points : 5)

Answer: Latency

13. (TCO 6) _____ is the process of forwarding frames in a switch or a bridge from one port to another port or from one segment to another segment on a network. (Points : 5)

Answer: Bridging

14. (TCO 2) _____ is a protocol used by the network-management software and networking devices to allow a network manager to monitor and troubleshoot network problems. (Points : 5)

Answer: Simple Network Management Protocol (SNMP)

15. (TCO 2) A(n) _____ is a request for information. The request is answered with a reply. (Points : 5) Answer: query

1. (TCO 2) _____ is a 1-bit flag in the TCP header that is used to request from the higher layers an immediate delivery of the packet. (Points : 5)

Answer: PSH

2. (TCO 2) _____ are the values between 1,024 and 49,151. These numbers are equivalent to wellknown ports in concept, but they are specifically used for nonprivileged applications and user processes.

(Points : 5)

Answer: The registered ports

3. (TCO 2) Binary digit 11111111 is decimal number _____. (Points : 5)

Answer: 255

4. (TCO 2) _____ is a private-address block. (Points : 5)

Answer: All the above

5. (TCO 3) The formula for calculating the number of hosts in a network is _____. (Points : 5)

Answer: 2? - 2 = Usable Hosts

6. (TCO 3) The 8-bit _____ field describes the maximum hops the packet can take before it is considered lost or undeliverable. (Points : 5)

Answer: TTL

7. (TCO 3) The _____ is a routing table entry used to direct packets for which a next hop is not explicitly listed in the routing table. (Points : 5)

Answer: default route

8. (TCO 3) _____ are protocols used between routers so that they can learn routes to add to their routing table. (Points : 5)

Answer: Routing protocols

9. (TCO 4) _____ is where a station can transmit and receive communication at the same time and there are no collisions with this Ethernet transmission. (Points : 5)

Answer: Full duplex

10. (TCO 4) _____ is the term describing a device communicating at Layer 2 of the OSI Model. (Points : 5)

Answer: Node

11. (TCO 1) The _____ is the network that combines enterprise networks, individual users, and ISPs into a single, global IP network. (Points : 5)

Answer: Internet

12. (TCO 1) _____ is a numbering system characterized by 1s (on) and 0s (off). (Points : 5)

Answer: Binary

13. (TCO 1) A(n) _____ is a collection of computers, printers, routers, switches, and other devices that can communicate with each other over some transmission medium. (Points : 5)

Answer: network

14. (TCO 1) A(an) _____ is a corporate system, such as a website, that is explicitly used by internal employees. (Points : 5)

Answer: Intranet

15. (TCO 7) The media standard maximum distance for 100BASE-TX cable is _____. (Points : 5)

Answer: 100 meters

16. (TCO 7) _____ refers to the cables connecting the telecommunication room with the work area. (Points : 5)

Answer: Backbone cabling

17. (TCO 7) _____ keeps cabling neat and easy to thread. (Points : 5)

Answer: A raceway

TCO 4) What are the two common LAN sublayers of the OSI Model Data Link Layer, and what network services do they provide?

Answer: An upper sublayer and an lower sublayer. The upper sublayer defines the software processes that provide services to the Network layer protocols. The lower sublayer defines the media access processes performed by the hardware.

Given that you have the Class C network address 192.168.89.0 and that you have borrowed one bit, what is the maximum number of hosts per subnet?

Answer: 126 hosts per subnet

Given a Class A network with the /21 prefix, determine the subnet mask in binary and in decimal. Then calculate the maximum number of hosts it can support

Subnet in decimal: 255.255.248.0 Subnet in binary: 11111111

Maximum number of hosts: 2046

Explain the 3 major modes of the Cisco IOS from top to bottom and the specific set of commands that are available when in that mode.

User EXEC – Display system information, perform basic tests, change terminal settings

Privileged EXEC – Use this mode to have full access to the device Global Configuration – Use this mode to configure the device

Identify and describe how the TCP three-way handshake works to ensure data delivery.

SYN is sent from HOST A to HOST B

SYN-ACK is sent back from HOST B to HOST A

ACK is sent back from HOST A to HOST B

This process creates a reliable protocol sequence since it allows the packets to be delivered with confirmation, and re-send them if necessary to ensure a successful transmission.

Explain the difference between throughput and bandwidth on a network.

Throughput is the amount of information (in bits, bytes, packets, etc) that can go or be sent through a connection or conductor in real life situation. Bandwidth is the amount of data that can be physically transferred through the media of choice.

Describe three responsibilities of the Data Link Layer of the OSI Model

Addressing, Error Detection, Frame Delimiting

Describe some of the advantages to using a switch on a network, name four. Looking at your list of advantages to using a switch on a network, why might you choose a switch over a hub on a network?

Four advantages to using a switch are: Reduces number of broadcast domains, supports VLAN’s, intelligence port / MAC mapping, less CPU intensive than a hub.

Faster speed, more efficient routing, and less broadcast traffic would make the switch a better choice on the network.

Name the 6 fields of the 802.3 Ethernet frame and their function on the network. Include the maximum byte size of each field in your answer?

Preamble – 7 bytes

Start-of-Frame delimiter – 1 byte

Destination address – 6 bytes

Source address – 6 bytes

Length – 2 bytes

Header & data – 46 – 1500 bytes

Frame check sequence – 4 bytes

Identify and explain five criteria network administrators often consider in the process of choosing cable.

Criteria should be considered, what hazards the cable will face, pulling strength, environment and interference, fire code ratings, and water protection.