Networking Concepts and TCP/IP Model

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Questions and Answers

What information is stored in the neighbor table of an EIGRP router?

Routing information learned from other protocols
Link-state data of all available paths
Information about EIGRP neighbors (correct)
The best routes to destinations

Which metric does EIGRP use by default when calculating the best route?

Load and reliability
Only delay
Only bandwidth
Bandwidth and delay (correct)

What is the administrative distance of EIGRP?

110
80
120
90 (correct)

What multicast address does EIGRP use to send hello packets?

224.0.0.10 (D) Signup and view all the answers

What must be the same on all routers within an EIGRP autonomous system?

Autonomous system number (D) Signup and view all the answers

Which protocol uses the multicast address 224.0.0.5 for normal communication?

OSPF (B) Signup and view all the answers

What type of routing protocol is EIGRP classified as?

Hybrid protocol (B) Signup and view all the answers

What algorithm does OSPF use to calculate the best path to each subnet?

Dijkstra's algorithm (B) Signup and view all the answers

Which subnet mask is allocated to the Sales department?

255.255.255.128 (C) Signup and view all the answers

What is the valid range of host IP addresses for the Sales department's subnet?

192.168.1.0 to 192.168.1.126 (D) Signup and view all the answers

To which department is the subnet 192.168.1.192 /27 allocated?

Accounts (C) Signup and view all the answers

How many valid host IP addresses does the subnet 255.255.255.224 provide?

14 (C) Signup and view all the answers

What is the reason for assigning the highest range of IPs to the Sales department?

Sales has the highest requirement. (A) Signup and view all the answers

Which subnet mask allows for a maximum of 2 valid hosts?

255.255.255.252 (B) Signup and view all the answers

What is the total number of host IP addresses required by the Purchase department?

50 (C) Signup and view all the answers

Which network number corresponds to the Purchase department?

192.168.1.64 (D) Signup and view all the answers

What is the main purpose of the link establishment phase in PPP?

To negotiate configuration options and open the connection (B) Signup and view all the answers

How does PAP authenticate a remote node?

Through a two-way handshake without interaction (A) Signup and view all the answers

Which statement about PAP is correct?

It sends passwords across the link in clear text (B) Signup and view all the answers

What is the role of CHAP in authentication within PPP?

It uses a variable challenge value to protect against replay attacks (D) Signup and view all the answers

Which authentication technique is recognized as less secure due to its simplicity?

PAP (B) Signup and view all the answers

What happens at the receiving node during PAP authentication?

User credentials are checked by an authentication server (B) Signup and view all the answers

Which protocol provides a stronger security measure than PAP during authentication?

CHAP (B) Signup and view all the answers

What is a common risk associated with using PAP for authentication?

Exposure to replay attacks due to password transmission (A) Signup and view all the answers

What is the primary purpose of an IPv6 address?

To uniquely identify a host on a network (D) Signup and view all the answers

What does a subnet mask of 255.255.255.248 indicate about valid host IP addresses?

It allows for 6 valid host IP addresses (B) Signup and view all the answers

In the context of IPv6, what is a unicast address?

An address that identifies a single network interface (C) Signup and view all the answers

Which of the following accurately describes an anycast address?

It identifies multiple hosts, routing to only one based on proximity (A) Signup and view all the answers

What is the significance of Variable Length Subnet Masking (VLSM)?

It reduces the number of unused IP addresses within subnets (C) Signup and view all the answers

How many bits does an IPv6 address consist of?

128 bits (A) Signup and view all the answers

What distinguishes multicast addresses from unicast addresses?

They can identify multiple hosts and are used in distribution protocols (B) Signup and view all the answers

What is an essential feature of anycast addresses?

They route packets to the nearest node based on routing definitions (C) Signup and view all the answers

What is the valid host range for the first subnet assuming subnet zero?

10.0.0.1 through 10.15.255.254 (B) Signup and view all the answers

How many subnets can be created with a Class A mask of 255.240.0.0?

14 subnets (C) Signup and view all the answers

What does VLSM stand for and how is it useful?

Variable Length Subnet Mask, allows for efficient use of IP addresses (A) Signup and view all the answers

For the purchase department with 50 computers, which subnet size is best suited?

/26 subnet mask (B) Signup and view all the answers

What is the broadcast address for the last subnet, assuming subnet zero?

10.255.255.255 (A) Signup and view all the answers

Which of the following describes why VLSM may be necessary?

It allows subnetting to have variable sizes based on the number of hosts. (A) Signup and view all the answers

What is the first address of the valid host range in the last subnet, assuming subnet zero?

10.240.0.1 (A) Signup and view all the answers

What type of addressing does VLSM utilize?

Classless addressing (C) Signup and view all the answers

What is the primary purpose of the OSPF Neighbor Table?

To keep track of all discovered OSPF neighbors (B) Signup and view all the answers

Which statement about OSPF Areas is true?

Each area in OSPF shares a unique Area ID (D) Signup and view all the answers

Why is resource optimization important in OSPF networks?

To decrease network flooding caused by excessive link state database exchanges (B) Signup and view all the answers

What does the Routing Table in OSPF contain?

The current best paths for forwarding data traffic (A) Signup and view all the answers

What determines the Router ID in an OSPF network?

The highest active IP address present on the router (A) Signup and view all the answers

What role does the Router Priority play in OSPF?

It is an 8-bit value deciding the BDR and DR election process (D) Signup and view all the answers

What is the backbone area in an OSPF network identified as?

Area 0 (C) Signup and view all the answers

Which of the following best describes the function of the Topology Table in OSPF?

It maps the complete network with all routers and paths available (D) Signup and view all the answers

Flashcards

Variable Length Subnet Mask (VLSM)

A method for dividing a network into smaller subnets of varying sizes, allowing for efficient allocation of IP addresses based on the number of hosts required in each subnet.

Subnet mask

A numerical masking sequence or IP address subset that defines the size of a subnet. VLSM uses variable length masks to accommodate networks with different numbers of hosts.

CIDR notation

A notation that specifies the number of bits in an IP address used for the network portion, thus indicating the size of the subnet. For example, /24 means 24 bits are used for the network.

VLSM router

A router capable of handling and routing traffic across subnets with different sizes, supporting the use of VLSM.