network

Standards for CSMA/CD are specified by which IEEE 802 sublayer?

• A. 802.1

• B. 802.3

• C. 802.4

• D. 802.5

Match the following: ~A. Repeaters ~1. Data Link Layer ~B. Bridges ~2. Network Layer ~C. Routers ~3. Physical Layer ~ A vs 2; B vs 3, C vs 1 ~A vs 3; B vs 1; C vs 2 ~A vs 3; B vs 2; C vs 1 ~A vs 1; B vs 2; C vs 3

Answer explanation

A.  ~ A vs 2; B vs 3, C vs 1

What is the difference between the OSI model and the TCP/IP model?

Answer explanation

Structure, function and usage.

You are creating a DHCP scope for your 192.168.1.32/28 subnet. The subnet consists of Windows 7, Windows 8, and Windows 10 computers. You have two UNIX computers on this subnet that will be assigned the two highest available static IP addresses. The subnet's default gateway will be assigned the lowest available IP address on the subnet. Which scope should you create on your DHCP server?

Answer explanation

-Create a DHCP scope with the range from 192.168.1.33 to 192.168.1.46 and exclude the two IP addresses 192.168.1.46 and 192.168.1.47

Write commands to configure IP on the interface Fa0/0 of router DTU1.

Answer explanation

-hostname DTU1

-interface FastEnthernet0/0

-   ip address 172.16.0.1 255.255.0.0

-  no shutdown

Compare and contrast copper wire, glass fiber, and satellite transmission media.

Answer explanation

-Copper wire and glass fiber are physical transmission media, while satellite transmission is wireless. Copper wire is susceptible to interface and has limited bandwith, while glass fiber has a higher bandwith and is less susceptible to interference but is more expensive. Sattellite transmission has high latency and requires line of sight but can cover large distances.

Computer networks are typically classified according to what? What are the types of computer networks?

Answer explanation

-A computer network can be categorized by their size

-four type: LAN, PAN,MAN, WAN and VPN.

What is the difference between a connection-oriented network and a connectionless network?

Answer explanation

-In a connection-oriented network, a connection is established between two decides before data transfer occurs. This provides reliability as errors can be detected and corrected before transmission.

-In a connectionless network, no prior connection is established, and packets are sent individually without any error checking or correction. This results in faster transmission but decreased reliability.

What are the two kinds of twisted-pair cable? Which is preferred? Why?

Answer explanation

-The two kinds of twisted-pair cable are unshielded twisted pair(UTP) and shielded twisted pair(STP).UTP is preferred as it is easier to install, less expensive, and provides adequate performance for most applications.

Router DTU1 needs to connect to PCB. What is the static route configuration on Router DTU1?

Answer explanation

-The static route configuration on Router DTU1 should be: ip route 172.16.3.0 255.255.255.0 172.16.2.2