Intro to Networking Exam

Which subnet mask would produce a subnet with up to 30 host addresses? A. 255.255.255.192 B. 255.255.255.224 C. 255.255.255.240 D. 255.255.255.248 E. 255.255.255.252

B

Which statements correctly describe MAC addresses? (Choose 3) A. Dynamically Assigned B. Copied into RAM during system startup C. Layer 3 address D. Contains a 3 byte OUI E. 6 bytes long F. 32 bits long

B, D, E

What three primary functions does data link layer encapsulation provide? A. MAC Addressing B. Error Detection C. Port Identification D. Path Determination E. IP Address Resolution

A, B

Which of these IP addresses cannot show up in the public internet? A. 172.17.2.1 B. 172.61.17.2 C. 192.168.255.254 D. 192.186.30.29 E. 12.12.34.89 F. 9.38.200.194

A, C

Which of the following names are used for the addresses used at the data link layer on an Ethernet network? (Choose 3) A. Physical Address B. Network Address C. Hierarchical Address D. MAC Address E. Burned-in Address

A, D, E

A point-to-point link has been given the subnet 192.168.7.240/28. How many host addresses are wasted? A. 4 B. 12 C. 28 D. 44 E. 60

B

An IPv4 address can be broken down into two parts. These are: A. Network portion and transport portion B. Network portion and host portion C. Network portion and broadcast potion D. Source portion and destination portion E. Source portion and destination port portion

B

What is the first valid (usable) host address on the subnet that includes a device with the IP address of 192.168.2.66/26 A. 192.168.2.64 B. 192.168.2.65 C. 192.168.2.66 D. 192.168.2.67

B

What is the network address of the host with IP address 192.168.22.83/26 A. 192.168.22.0 B. 192.168.22.64 C. 192.168.22.72 D. 192.168.22.80

B

What is the primary purpose of ARP (Address Resolution Protocol)? A. Translate URLs to IP addresses B. Resolve IPv4 addresses to MAC addresses C. Provide dynamic IP configuration to network devices D. Convert internal private addresses to external public addresses

B

What is the purpose of the frame trailer in an Ethernet frame? A. Addressing B. Error Checking C. Showing the Frame Length D. Showing the Layer 3 Protocol used

B

Which command can be used to discover all the router (hops) along the path from a source to it's destination? A. ping B. Tracert or traceroute C. ipcomfig D. Netstat

B

A network mask has 50 hosts. What subnet mask would give a subnet with as few as possible unused addresses. A. 255.255.255.0 B. 255.255.255.128 C. 255.255.255.224 D. 225.255.255.240 E. 225.255.255.248

C

How many bits are there in a data link layer Ethernet address? A. 16 B. 32 C. 48 D. 64 E. 128

C

How many host addresses are available on a subnet with the subnet mask /28? A. 2 B. 6 C. 14 D. 30 E. 62

C

What is the protocol data unit at the data link layer? A. Segment B. Packet C. Frame D. Datagram

C

When is a straight-through cable used in a network? A. When connecting a router through the console port B. When connecting one switch to another switch. C. When connecting a host to a switch D. When connecting a router to another router.

C

How many host addresses are available on a subnet with the subnet mask 255.255.255.224? A. 2 B. 6 C. 14 D. 30 E. 62

D

Which function is the responsibility of the network layer? A. Encoding signals to put them on the transport medium B. Re-sending packets that have been lost in transmission C. Finding the best route for the packet to travel to it's destination D. Managing the access of hosts to the transport medium

C

Which statement describes one purpose of the subnet mask setting for a host? A. It is used to describe the type of subnet B. It is used to identify the default gateway C. It is used to determine which netwrkking the host is in D. It is used to determine the maximum number of bits withing one packet that can be placed on a particular network

C

172.16.0.0/16 is subnetted with subnet mask /22. Which of the following is a broastcast address. A. 172.16.12.255 B. 172.16.21.255 C. 172.16.38.255 D. 172.16.47.255 E. 172.16.53.255

D

192.168.1.0 is subnetted with subnet mask /28. Which of the following is a subnet (network) address? A. 192.168.1.38 B. 192.168.1.60 C. 192.168.1.100 D. 192.168.1.176

D

What information is added during encapsulation at OSI Layer 3? A. Source and destination MAC B. Source and destination application protocol C. Source and destination port number D. Source and destination IP addresses

D

What is one of the components in a routing table entry? A. The MAC address of the interface of the router B. The destination layer 4 port number C. The destination host addresses D. The next-hop address

D

Which IP packet field will prevent a packet from staying inside the network forever? A. Type-of-service B. Identification C. Flags D. Time-to-live E. Header Checksum

D

Which full range of decimal values are valid in one octet of an IPv4 address? A. 0-31 B. 1-34 C. 0-128 D. 0-255 E. 1-256

D

In a connectionless system, what contact does IPv4's network layer make with the destination before sending a packet? A. It sends a message to say that a packet will be arriving B. It negotiates speed and timing parameters for the transfer C. It checks that the destination host exists D. It checks that the destination host is ready to receive E. It does not make any contact before sending packets

E

Which address does a router use to forward packets? A. Destination Port Number B. Source Port Number C. Destination MAC Address D. Source MAC Address E. Destination IP Address F. Source IP Address

E

192.168.1.0 is subnetted with subnet mask /26. Which of the following is a broadcast address? A. 192.168.1.33 B. 192.168.1.59 C. 192.168.1.95 D. 192.168.1.129 E. 192.168.1.158 F. 192.168.1.191

F

Ethernet operates at which layer of the TCP/IP network Model? A. Application B. Physical C. Transport D. Internet E. Data Link F. Network Access

F

How many bits make up an IPv6 address? A. 16 B. 32 C. 64 D. 80 E. 96 F. 128 G. 160

F